{"id":1676,"date":"2026-05-26T15:17:30","date_gmt":"2026-05-26T07:17:30","guid":{"rendered":"https:\/\/wellspcba.com\/?p=1676"},"modified":"2026-05-26T15:17:31","modified_gmt":"2026-05-26T07:17:31","slug":"pcb-surface-finish-guide","status":"publish","type":"post","link":"https:\/\/wellspcba.com\/pt\/pcb-surface-finish-guide\/","title":{"rendered":"PCB Surface Finish Guide: HASL vs ENIG vs OSP vs ENEPIG \u2014 How to Choose the Right Option for Your Design"},"content":{"rendered":"<p>The <strong>PCB surface finish<\/strong> you specify on your fabrication drawing is one of the few decisions that simultaneously affects soldering yield, shelf life, high-frequency signal integrity, regulatory compliance, and unit cost. Engineers who treat it as an afterthought \u2014 accepting whatever the factory defaults to \u2014 routinely encounter tombstoning on fine-pitch passives, voided BGA joints, solder bridging on QFN pads, or assembly failures that trace back to a coating that degraded in the warehouse before the boards were ever reflowed.<\/p>\n\n\n\n<p>This guide covers all six mainstream surface finish options with the technical depth that most manufacturer guides omit: exact plating thickness specifications, cost premium data, reflow cycle tolerance, and the high-frequency physics that makes nickel-bearing finishes unsuitable for RF designs above 1 GHz. Every recommendation in this guide corresponds to real production scenarios handled at Wells Electronics across 16+ years of PCB and PCBA manufacturing.<\/p>\n\n\n\n<p><strong>Quick Answer:<\/strong> HASL (lead-free) is the lowest-cost default for through-hole and coarse-pitch SMT. ENIG is the modern standard for fine-pitch SMT, BGA, and long shelf life. OSP is the cost-effective choice for high-volume single-pass SMT with short assembly windows. ENEPIG is the premium option when wire bonding or absolute black-pad elimination is required. Immersion Silver is the specialist choice for RF and high-frequency designs above 1 GHz. Immersion Tin is optimized for press-fit connector applications.<\/p>\n\n\n<h2>What You&#8217;ll Learn in This Guide<\/h2>\n\n\n<ul class=\"wp-block-list\">\n<li>The exact plating thickness, process chemistry, and failure mode of each of the 6 surface finish types<\/li>\n\n\n\n<li>Why ENIG&#8217;s black pad defect occurs, how to detect it, and what to demand from your supplier to prevent it<\/li>\n\n\n\n<li>The physics behind why nickel-bearing finishes (ENIG, ENEPIG) degrade signal integrity above 1 GHz<\/li>\n\n\n\n<li>Cost premium data referenced to LF-HASL baseline \u2014 the numbers no competitor guide publishes<\/li>\n\n\n\n<li>A 5-step selection framework you can apply to any design in under 10 minutes<\/li>\n\n\n\n<li>Industry-specific recommendations for medical, automotive, RF, consumer, and industrial applications<\/li>\n\n\n\n<li>What quality documents to request from your PCB manufacturer before confirming a surface finish order<\/li>\n<\/ul>\n\n\n<h2>What Is a PCB Surface Finish and Why Does It Matter?<\/h2>\n\n<h3>The Function of a Surface Finish \u2014 Beyond Oxidation Prevention<\/h3>\n\n\n<p>A <strong>PCB surface finish<\/strong> is a protective coating applied to all exposed copper pads, vias, and lands on a finished circuit board. Without it, bare copper begins oxidizing within hours of air exposure \u2014 forming cupric oxide (CuO) and cuprous oxide (Cu\u2082O) layers that are non-solderable. A board with oxidized pads cannot form reliable intermetallic bonds during soldering, leading to cold joints, poor wetting, and outright assembly failures.<\/p>\n\n\n\n<p>But oxidation prevention is only the first function. A surface finish performs three distinct roles throughout a board&#8217;s life:<\/p>\n\n\n\n<p><strong>Function 1 \u2014 Oxidation barrier during storage:<\/strong> Protects copper from the time of fabrication until the board reaches the assembly line, whether that is 10 days or 14 months later.<\/p>\n\n\n\n<p><strong>Function 2 \u2014 Solderability interface during assembly:<\/strong> Provides the metallurgical surface onto which solder paste wets, flows, and forms intermetallic compounds (IMCs) during reflow. The chemistry and topography of the finish directly determine solder joint quality.<\/p>\n\n\n\n<p><strong>Function 3 \u2014 Electrical contact surface in operation:<\/strong> For edge connectors, test points, and press-fit contacts, the finish remains the active electrical interface throughout the product&#8217;s field life. Durability, contact resistance, and wear resistance all depend on finish selection.<\/p>\n\n\n\n<p>Choosing the wrong finish affects all three functions simultaneously. A finish that degrades during storage (OSP past its assembly window) prevents function 2 from ever occurring. A finish that produces surface roughness (HASL on a 0.4mm-pitch BGA) makes function 2 unreliable. Understanding the <a href=\"https:\/\/wellspcba.com\/pt\/pcba-manufacturing-process\/\" target=\"_blank\" rel=\"noreferrer noopener\">PCBA manufacturing process<\/a> end-to-end helps clarify where surface finish decisions have the greatest production impact.<\/p>\n\n\n<h3>Two Categories: Metallic vs. Organic Finishes<\/h3>\n\n\n<p>Surface finishes fall into two fundamentally different protection mechanisms:<\/p>\n\n\n\n<p><strong>Metallic finishes<\/strong> (HASL, LF-HASL, ENIG, ENEPIG, Immersion Silver, Immersion Tin) deposit a metal or metal alloy layer over the copper. They protect through physical barrier \u2014 the deposited metal prevents oxygen and moisture from reaching the underlying copper. Metallic finishes are generally more durable, have longer shelf lives, and are more tolerant of handling and environmental variation.<\/p>\n\n\n\n<p><strong>Organic finishes<\/strong> (OSP \u2014 Organic Solderability Preservative) deposit a thin organic molecular film that bonds chemically to the copper surface through coordinate bonding. The film prevents oxidation as long as it remains intact. OSP is lower cost and produces the flattest possible surface, but the organic film is sensitive to heat, humidity, and repeated handling \u2014 it does not survive multiple reflow cycles intact.<\/p>\n\n\n\n<p>This fundamental distinction drives the majority of surface finish selection decisions. If your application requires long shelf life, multiple reflow passes, or rework capability, an organic finish is not your option. If maximum flatness and minimum cost are the priorities for a well-controlled assembly operation, OSP is worth serious consideration.<\/p>\n\n\n<h2>The 6 PCB Surface Finish Types \u2014 Full Technical Breakdown<\/h2>\n\n\n<p>Surface finish selection should begin with technical specification, not with price. Understanding what each finish is made of, how it is deposited, and where it fails will always lead to a better decision than reading a bullet-point pros\/cons list.<\/p>\n\n\n<h3>1. HASL \u2014 Hot Air Solder Leveling: The Traditional Workhorse<\/h3>\n\n\n<p>HASL is the original mass-production surface finish, dominant from the 1970s through the mid-2000s and still the default for many through-hole and mixed-technology designs. The process immerses the bare PCB in a bath of molten solder (traditionally Sn63\/Pb37, or lead-free SAC305 alloy for the modern LF-HASL variant), then withdraws the board through a pair of hot air knives that remove excess solder with compressed air at approximately 260\u2013270\u00b0C.<\/p>\n\n\n\n<p><strong>Exact technical parameters:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coating thickness: 1\u201340 \u00b5m (highly variable; this variability is the defining weakness)<\/li>\n\n\n\n<li>Solder alloy \u2014 traditional: Sn63\/Pb37 (eutectic, melting point 183\u00b0C)<\/li>\n\n\n\n<li>Solder alloy \u2014 lead-free: SAC305 (Sn96.5\/Ag3\/Cu0.5, melting point 217\u2013221\u00b0C)<\/li>\n\n\n\n<li>Process temperature: 255\u2013270\u00b0C bath temperature<\/li>\n\n\n\n<li>Surface roughness: Ra 2\u201310 \u00b5m (significantly rougher than ENIG or OSP)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"683\" data-src=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-hasl-hot-air-solder-leveling-machine-1024x683.webp\" alt=\"HASL hot air solder leveling machine in operation at PCB factory \u2014 PCB surface finish process showing hot air knives leveling molten solder on green PCB panel\" class=\"wp-image-1680 lazyload\" data-srcset=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-hasl-hot-air-solder-leveling-machine-1024x683.webp 1024w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-hasl-hot-air-solder-leveling-machine-300x200.webp 300w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-hasl-hot-air-solder-leveling-machine-768x512.webp 768w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-hasl-hot-air-solder-leveling-machine-18x12.webp 18w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-hasl-hot-air-solder-leveling-machine.webp 1536w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/683;\" \/><\/figure>\n\n\n\n<p>The thickness range of 1\u201340 \u00b5m is not a specification \u2014 it is an inherent characteristic of the hot-air leveling process. Solder accumulates more heavily on larger pads, inside via barrels, and at pad corners, while fine-pitch pad arrays between components receive thinner coverage. This means that on a board with mixed component types, different pads carry different solder volumes before any solder paste has been applied, making paste volume prediction unreliable.<\/p>\n\n\n\n<p><strong>Where HASL works well:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Through-hole assemblies and mixed SMT\/THT boards where the THT components dominate<\/li>\n\n\n\n<li>Designs with component pitch of 0.65mm or greater \u2014 at this pitch, the surface variation is within tolerable limits for reliable soldering<\/li>\n\n\n\n<li>Rapid prototypes where lead time and cost are the primary constraints<\/li>\n\n\n\n<li>Designs that will be assembled immediately \u2014 HASL shelf life exceeds 12 months under standard storage<\/li>\n<\/ul>\n\n\n\n<p><strong>Where HASL fails:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Any board with BGA, CSP, or \u00b5BGA packages \u2014 the uneven pad heights across the BGA footprint prevent uniform solder joint formation<\/li>\n\n\n\n<li>Fine-pitch QFP or QFN with pitch below 0.5mm \u2014 the surface topography variation causes solder bridging between adjacent pads during reflow<\/li>\n\n\n\n<li>High-frequency designs \u2014 the rough surface and high-tin alloy contribute to signal scattering at microwave frequencies<\/li>\n\n\n\n<li>Export to EU, UK, or California markets \u2014 traditional Sn\/Pb HASL violates RoHS regulations. LF-HASL is compliant but carries a small cost premium<\/li>\n<\/ul>\n\n\n\n<p>For boards using through-hole technology extensively, understanding the full <a href=\"https:\/\/wellspcba.com\/pt\/tht-assembly-process\/\" target=\"_blank\" rel=\"noreferrer noopener\">THT assembly process<\/a> helps clarify why HASL&#8217;s superior barrel fill capability makes it the preferred finish for wave soldering applications.<\/p>\n\n\n<h3>2. ENIG \u2014 Electroless Nickel Immersion Gold: The Modern Standard<\/h3>\n\n\n<p>ENIG has become the default surface finish for modern SMT-dominated PCB designs, and for good reason. It provides the combination of properties \u2014 surface flatness, corrosion resistance, and shelf life \u2014 that BGA-dense, fine-pitch designs require. The process deposits two sequential layers: first, an electroless nickel layer via autocatalytic plating, then a thin immersion gold layer via displacement reaction.<\/p>\n\n\n\n<p><strong>Exact technical parameters (per <a href=\"https:\/\/www.ipc.org\/ipc-4552\" target=\"_blank\" rel=\"noreferrer noopener\">IPC-4552B<\/a>):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nickel layer: 3\u20135 \u00b5m (IPC-4552B minimum: 3 \u00b5m)<\/li>\n\n\n\n<li>Gold layer: 0.05\u20130.125 \u00b5m (this range is critical \u2014 too thick increases black pad risk)<\/li>\n\n\n\n<li>Surface roughness: Ra \u2264 0.8 \u00b5m<\/li>\n\n\n\n<li>Nickel phosphorus content: 7\u201311 wt% (this parameter directly controls black pad susceptibility)<\/li>\n\n\n\n<li>Shelf life: 12\u201318 months under standard storage conditions<\/li>\n<\/ul>\n\n\n\n<p>The gold layer in ENIG serves only one purpose: protecting the nickel from oxidation during storage. During soldering, the thin gold layer dissolves into the solder within seconds of reflow, and the solder joint forms primarily against the nickel surface. This means the nickel layer is what actually determines long-term solder joint reliability \u2014 and nickel quality is what the black pad defect attacks.<\/p>\n\n\n\n<p><strong>Why ENIG dominates for BGA designs:<\/strong> The Ra \u2264 0.8 \u00b5m surface roughness creates a pad surface that is flat to within 0.1 \u00b5m variation across a BGA footprint, compared to HASL&#8217;s 2\u201310 \u00b5m variation. For a 0.8mm-pitch BGA with 200+ balls, this flatness uniformity is the difference between a 99.5% first-pass yield and a 94% yield that requires X-ray inspection and rework on every board. ENIG is also fully compatible with lead-free SAC alloy soldering and meets the <a href=\"https:\/\/environment.ec.europa.eu\/topics\/waste-and-recycling\/rohs-directive_en\" target=\"_blank\" rel=\"noreferrer noopener\">RoHS Directive<\/a> requirements for all major markets.<\/p>\n\n\n\n<p><strong>Where ENIG is the right choice:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Any design with BGA, CSP, or flip-chip packages<\/li>\n\n\n\n<li>Fine-pitch QFP or QFN with pitch below 0.5mm<\/li>\n\n\n\n<li>Medical, automotive, and aerospace applications requiring IPC Class 3 workmanship<\/li>\n\n\n\n<li>Products with supply chain uncertainty \u2014 if boards may sit in inventory for 6\u201318 months before assembly, ENIG is the minimum viable shelf life for most supply chains<\/li>\n\n\n\n<li>Designs requiring multiple reflow passes or field rework \u2014 ENIG maintains solderability through three or more reflow cycles<\/li>\n<\/ul>\n\n\n<h4>The Black Pad Problem: What It Is, Why It Happens, and How to Verify Your Supplier Controls It<\/h4>\n\n\n<p>Black pad is the most significant quality risk specific to ENIG \u2014 and the most poorly understood one. Nearly every competitor guide mentions it in a single sentence. It deserves a full explanation because, unlike most PCB defects, black pad cannot be detected before assembly.<\/p>\n\n\n\n<p><strong>What black pad is:<\/strong> During the ENIG gold deposition step, the displacement reaction between gold ions in solution and the underlying nickel is chemically aggressive. In a properly controlled bath, this reaction deposits gold uniformly while causing only minimal nickel surface dissolution. In a bath with low pH, high gold concentration, or excessive dwell time, the reaction becomes hyper-corrosive \u2014 attacking nickel grain boundaries, leaching phosphorus from the nickel structure, and leaving a corroded, phosphorus-enriched layer at the nickel surface. This corroded layer is brittle and has poor bond strength with the solder IMC. Under mechanical stress \u2014 press-fit insertion, connector mating, or thermal cycling \u2014 the solder joint fails catastrophically through the corroded nickel interface. When the fracture surface is exposed, it appears black or dark gray \u2014 the origin of the name.<\/p>\n\n\n\n<p><strong>What makes black pad insidious:<\/strong> A board with black pad defects looks completely normal. Visual inspection, AOI, and even X-ray inspection cannot detect the defect because the corroded nickel is hidden beneath an intact gold layer and a visually normal solder joint. Black pad only reveals itself under mechanical stress or thermal cycling \u2014 by which time the board may be in the customer&#8217;s product.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"409\" data-src=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison-1024x409.webp\" alt=\"ENIG black pad defect comparison \u2014 left shows hyper-corrosion at nickel grain boundaries causing black pad, right shows normal uniform ENIG nickel layer. PCB surface finish quality control at Wells Electronics\" class=\"wp-image-1681 lazyload\" data-srcset=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison-1024x409.webp 1024w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison-300x120.webp 300w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison-768x307.webp 768w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison-1536x614.webp 1536w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison-18x7.webp 18w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-enig-black-pad-vs-normal-crosssection-comparison.webp 1983w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/409;\" \/><\/figure>\n\n\n\n<p><strong>The three conditions that cause black pad:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Gold bath pH below specification (typically should be controlled at 4.5\u20135.5)<\/li>\n\n\n\n<li>Nickel bath phosphorus content outside the 7\u201311 wt% range<\/li>\n\n\n\n<li>Gold layer thickness exceeding 0.15 \u00b5m, which corresponds to excessive dwell time in the gold bath<\/li>\n<\/ol>\n\n\n\n<p><strong>How to verify your supplier controls it:<\/strong><\/p>\n\n\n\n<p>Before placing an ENIG order, request the following documentation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>IPC-4552B compliance declaration<\/strong> \u2014 confirms the factory operates to the current ENIG specification standard<\/li>\n\n\n\n<li><strong>XRF thickness measurement report for the batch<\/strong> \u2014 shows gold layer thickness by pad location; gold should be uniformly within 0.05\u20130.125 \u00b5m; any measurement above 0.15 \u00b5m is a concern<\/li>\n\n\n\n<li><strong>Nickel bath chemistry record<\/strong> \u2014 phosphorus content, stabilizer concentration, and bath age for the plating run that produced your boards<\/li>\n\n\n\n<li><strong>Gold bath pH log<\/strong> \u2014 daily pH measurement records; variance outside 4.5\u20135.5 warrants explanation<\/li>\n<\/ul>\n\n\n\n<p>At Wells Electronics, every ENIG order includes XRF thickness verification on production coupons, with gold and nickel thickness measurements documented in the shipment quality record. Nickel bath chemistry is monitored daily, with bath replenishment triggered by phosphorus content deviation rather than by calendar interval. ENIG boards that fail XRF specification are replated before shipment \u2014 not shipped with a deviation waiver.<\/p>\n\n\n\n<p>If a supplier cannot provide an XRF thickness report on request, that is a significant quality flag. Consider upgrading to ENEPIG if your application cannot tolerate even low black pad risk.<\/p>\n\n\n<h3>3. ENEPIG \u2014 Electroless Nickel Electroless Palladium Immersion Gold: Premium Reliability<\/h3>\n\n\n<p>ENEPIG is ENIG with one additional layer inserted between the nickel and gold: an electroless palladium (Pd) layer. This seemingly minor addition has two major consequences that make ENEPIG the choice for the most demanding applications.<\/p>\n\n\n\n<p><strong>Exact technical parameters:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nickel layer: 3\u20135 \u00b5m (same as ENIG)<\/li>\n\n\n\n<li>Palladium layer: 0.05\u20130.15 \u00b5m (the critical addition)<\/li>\n\n\n\n<li>Gold layer: 0.03\u20130.05 \u00b5m (thinner than ENIG \u2014 palladium handles the protection role)<\/li>\n\n\n\n<li>Shelf life: 12 months or more<\/li>\n<\/ul>\n\n\n\n<p><strong>Why palladium eliminates black pad:<\/strong> The palladium layer acts as a physical diffusion barrier between the gold deposition bath and the nickel surface. It intercepts the aggressive gold displacement reaction before it reaches the nickel grain boundaries, preventing the hyper-corrosion that creates the phosphorus-enriched brittle zone. With ENEPIG, the gold layer dissolves into solder during reflow as it does with ENIG, but the palladium layer remains in the joint structure as a beneficial IMC constituent \u2014 it does not create a reliability problem.<\/p>\n\n\n\n<p><strong>Why ENEPIG enables wire bonding:<\/strong> ENIG&#8217;s gold layer, at 0.05\u20130.125 \u00b5m, is too thin to support thermosonic gold wire bonding or aluminum wire bonding. The gold-palladium surface in ENEPIG provides a bondable interface that ENIG cannot. For IC packages requiring wire bonding between die and substrate \u2014 flip-chip designs, MEMS sensors, multi-die modules \u2014 ENEPIG is the only standard surface finish option.<\/p>\n\n\n\n<p><strong>Where ENEPIG is the right choice:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Any design requiring both soldering and wire bonding on the same substrate<\/li>\n\n\n\n<li>Aerospace, military, and implantable medical applications where black pad risk is unacceptable<\/li>\n\n\n\n<li>High-reliability automotive electronics (ISO 26262 ASIL C\/D) where field failure analysis must not reveal plating quality as a contributing cause<\/li>\n\n\n\n<li>Mixed-technology boards combining THT, SMT, BGA, and press-fit connectors, all requiring one universal finish<\/li>\n<\/ul>\n\n\n\n<p>The cost premium over ENIG (typically 80\u2013150% above LF-HASL baseline versus ENIG&#8217;s 30\u201360%) is significant. For most industrial and commercial applications, properly controlled ENIG with XRF verification provides sufficient reliability. ENEPIG becomes necessary when the application consequence of a black pad failure is unacceptable \u2014 patient injury, flight-critical system failure, or irretrievable field deployment.<\/p>\n\n\n<h3>4. OSP \u2014 Organic Solderability Preservative: High-Volume SMT&#8217;s Optimal Choice<\/h3>\n\n\n<p>OSP is the outlier among PCB surface finishes. While all other finishes deposit a metallic or inorganic layer, OSP applies a thin organic molecular film \u2014 typically a benzimidazole-based compound \u2014 that bonds to the copper surface through coordination chemistry, forming a chelated copper complex. The film is transparent, extremely thin, and provides the flattest possible soldering surface.<\/p>\n\n\n\n<p><strong>Exact technical parameters:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coating thickness: 0.2\u20130.5 \u00b5m (so thin it is essentially invisible; this also means it cannot be measured by standard XRF)<\/li>\n\n\n\n<li>Chemical composition: Benzimidazole or substituted benzimidazole compound<\/li>\n\n\n\n<li>Shelf life: 6\u201312 months (strongly dependent on storage temperature and humidity)<\/li>\n\n\n\n<li>Maximum reflow cycles: 1\u20132 (organic film degrades significantly beyond the first reflow)<\/li>\n\n\n\n<li>Storage requirement: 15\u201325\u00b0C \/ RH \u2264 60%; boards should not be removed from sealed packaging until immediately before assembly<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"683\" data-src=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-osp-coating-horizontal-conveyor-line-factory-1024x683.webp\" alt=\"OSP organic solderability preservative PCB surface finish coating line at Wells Electronics factory \u2014 horizontal conveyor system applying benzimidazole organic protective coating to PCB panels\" class=\"wp-image-1682 lazyload\" data-srcset=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-osp-coating-horizontal-conveyor-line-factory-1024x683.webp 1024w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-osp-coating-horizontal-conveyor-line-factory-300x200.webp 300w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-osp-coating-horizontal-conveyor-line-factory-768x512.webp 768w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-osp-coating-horizontal-conveyor-line-factory-18x12.webp 18w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-osp-coating-horizontal-conveyor-line-factory.webp 1536w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/683;\" \/><\/figure>\n\n\n\n<p><strong>Why OSP excels in high-volume SMT production:<\/strong> The 0.2\u20130.5 \u00b5m OSP coating adds essentially zero height to the copper pad surface, making OSP the flattest of all surface finish options \u2014 even flatter than ENIG, which adds 3\u20135 \u00b5m of nickel plus gold. This near-zero surface addition makes OSP the optimal finish for <a href=\"https:\/\/wellspcba.com\/pt\/high-volume-pcb-assembly-services\/\">high-volume PCB assembly<\/a> lines running fine-pitch SMT with automated solder paste inspection (SPI). When every pad height is exactly copper level, paste volume prediction from the stencil aperture design is maximally accurate, and SPI rejects are minimized.<\/p>\n\n\n\n<p>OSP is also the only RoHS-compliant surface finish that costs at or below LF-HASL pricing. For a consumer electronics product with 50,000-unit monthly volume, an OSP cost saving of $0.05\u20130.10 per board adds up to $2,500\u20135,000 per month \u2014 meaningful at scale.<\/p>\n\n\n\n<p><strong>Where OSP fails:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Any board with through-hole components: OSP coating inside via barrels is non-uniform and thermally fragile; wave soldering through OSP-coated holes produces unreliable barrel fill<\/li>\n\n\n\n<li>Second-side reflow assemblies: boards going through reflow twice reach the second pass with significantly degraded OSP on the bottom side, risking poor wetting on bottom-side components<\/li>\n\n\n\n<li>Products with uncertain assembly timing: if boards will sit in your warehouse for more than 6\u20138 months, or if your assembly line schedule is uncertain, OSP&#8217;s shelf life becomes a real risk<\/li>\n\n\n\n<li>Boards requiring field rework: the OSP film cannot survive the localized heating of rework, making resoldering on reworked areas unreliable without a separate flux application step<\/li>\n<\/ul>\n\n\n<h3>5. Immersion Silver \u2014 The RF and High-Frequency Specialist<\/h3>\n\n\n<p>Immersion Silver (IAg) is a displacement-plated finish that deposits a thin silver layer directly onto the copper surface. Silver&#8217;s conductivity (6.30 \u00d7 10\u2077 S\/m) is slightly higher than copper&#8217;s (5.96 \u00d7 10\u2077 S\/m) and dramatically higher than nickel&#8217;s (1.43 \u00d7 10\u2077 S\/m). This electrical property makes Immersion Silver the specialist choice for RF and high-frequency circuit designs \u2014 for reasons that go deeper than conductivity alone.<\/p>\n\n\n\n<p><strong>Exact technical parameters:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Silver layer thickness: 0.12\u20130.4 \u00b5m<\/li>\n\n\n\n<li>Shelf life: 6\u201312 months (sensitive to sulfur-containing environments)<\/li>\n\n\n\n<li>Surface resistivity: lowest of all common finishes (matched to or slightly better than copper)<\/li>\n\n\n\n<li>Maximum reflow cycles: 1\u20132<\/li>\n<\/ul>\n\n\n\n<p><strong>The physics of why ENIG fails RF designs above 1 GHz \u2014 and why Immersion Silver does not:<\/strong><\/p>\n\n\n\n<p>At high frequencies, electrical current does not flow uniformly through a conductor&#8217;s cross-section. Instead, it concentrates increasingly toward the surface as frequency rises \u2014 a phenomenon called the skin effect. The skin depth (\u03b4) in a conductor is given by \u03b4 = \u221a(2\u03c1\/\u03c9\u00b5), where \u03c1 is resistivity, \u03c9 is angular frequency, and \u00b5 is magnetic permeability.<\/p>\n\n\n\n<p>Nickel \u2014 the structural layer in both ENIG and ENEPIG \u2014 has a relative magnetic permeability (\u00b5r) of approximately 1.8 to 10, depending on phosphorus content and microstructure. This means nickel is a ferromagnetic material. At 1 GHz, the skin depth in nickel is approximately 0.5 \u00b5m. At 10 GHz, it falls below 0.2 \u00b5m.<\/p>\n\n\n\n<p>The consequence: at microwave frequencies, the electromagnetic field penetrates the ENIG surface, encounters the nickel layer (which begins 0.05\u20130.125 \u00b5m below the gold surface), and induces current flow through a ferromagnetic material with both higher resistivity and higher permeability than copper. The result is elevated insertion loss \u2014 typically 0.3\u20130.5 dB\/inch at 10 GHz compared to a copper or silver reference \u2014 that becomes significant in RF front-ends, antenna feed networks, filter circuits, and high-speed differential pairs.<\/p>\n\n\n\n<p>Immersion Silver eliminates the ferromagnetic nickel layer entirely. Signal current at GHz frequencies flows through the silver film directly into the copper below, encountering no magnetic material in its path. For antenna boards, phased array substrates, 5G millimeter-wave modules, and PCIe Gen 5 or 112G SerDes designs where signal integrity margins are tight, Immersion Silver is the technically correct surface finish choice.<\/p>\n\n\n\n<p><strong>The main risks of Immersion Silver:<\/strong><\/p>\n\n\n\n<p>Creep corrosion is the primary reliability concern. Silver reacts with atmospheric sulfur compounds (H\u2082S, SO\u2082) to form silver sulfide (Ag\u2082S), a non-conductive black corrosion product. Unlike bulk corrosion, silver sulfide can migrate laterally across the pad surface and between adjacent conductors under humid conditions \u2014 &#8220;creeping&#8221; across distances that can eventually bridge pads. Industrial environments with elevated sulfur content \u2014 near rubber processing, paper mills, or high-pollution areas \u2014 present elevated creep corrosion risk. Proper sealed packaging (anti-tarnish barrier bags with desiccant) and assembly within the shelf life window mitigate this risk.<\/p>\n\n\n\n<p>Handling sensitivity is also significant. Fingerprint oils contain organic acids that visibly tarnish silver surfaces. All boards with Immersion Silver finish must be handled with powder-free gloves from the moment the package is opened.<\/p>\n\n\n<h3>6. Immersion Tin \u2014 The Press-Fit Connector Specialist<\/h3>\n\n\n<p>Immersion Tin (ISn) deposits a thin tin layer over copper through a displacement reaction, producing a flat, solderable surface that is particularly well-suited to press-fit connector applications. It is less commonly specified than ENIG or OSP but fills a specific technical niche.<\/p>\n\n\n\n<p><strong>Exact technical parameters:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tin layer thickness: 0.8\u20131.2 \u00b5m (IPC minimum: 0.8 \u00b5m)<\/li>\n\n\n\n<li>Shelf life: 3\u20136 months (the shortest of all standard surface finishes)<\/li>\n\n\n\n<li>Copper-tin intermetallic growth: begins immediately after deposition; accelerates above 40\u00b0C<\/li>\n<\/ul>\n\n\n\n<p><strong>Why Immersion Tin suits press-fit applications:<\/strong> Press-fit connectors are inserted by mechanical force into plated through-holes, relying on controlled elastic deformation between the connector tail and the hole wall to create a gas-tight electrical connection. The thin, compliant tin layer on the hole wall reduces insertion force while maintaining good contact resistance \u2014 properties that solder or hard gold finishes cannot provide at equivalent thickness.<\/p>\n\n\n\n<p><strong>The tin whisker problem:<\/strong> Tin is subject to spontaneous whisker growth \u2014 thin metallic filaments that can emerge from the tin surface over months to years under stress, temperature gradients, or electrical fields. Tin whiskers ranging from 0.1 to over 10 mm have been documented in electronic assemblies, and they are electrically conductive \u2014 capable of bridging adjacent conductors and creating shorts. Mitigation approaches include nickel underlayer (which reduces whisker driving force), controlled tin thickness, and avoiding high-stress storage conditions.<\/p>\n\n\n\n<p><strong>Where Immersion Tin is the right choice:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Backplane and motherboard designs using press-fit connectors<\/li>\n\n\n\n<li>Designs requiring a lead-free, flat finish at lower cost than ENIG where the assembly window can be controlled to 3\u20136 months<\/li>\n\n\n\n<li>Applications where the tin whisker risk is acceptable given the design geometry (large pad pitch reduces bridging risk)<\/li>\n<\/ul>\n\n\n<h2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\">The Master Comparison Table<\/h2>\n<blockquote class=\"ml-2 border-l-4 border-border-300\/10 pl-4 text-text-300\">\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>PCB Surface Finish \u2014 All 6 Types Side-by-Side<\/strong><\/p>\n<\/blockquote>\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Parameter<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>LF-HASL<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>ENIG<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>ENEPIG<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>OSP<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Immersion Silver<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Immersion Tin<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Coating thickness<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">1\u201340 \u00b5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">Ni 3\u20135 \u00b5m \/ Au 0.05\u20130.125 \u00b5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">Ni 3\u20135 \u00b5m \/ Pd 0.05\u20130.15 \u00b5m \/ Au 0.03\u20130.05 \u00b5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">0.2\u20130.5 \u00b5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">0.12\u20130.4 \u00b5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">0.8\u20131.2 \u00b5m<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Surface flatness<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Poor<\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent<\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent<\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent<\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent<\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Shelf life<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">12 months+<\/td><td class=\"has-text-align-center\" data-align=\"center\">12\u201318 months<\/td><td class=\"has-text-align-center\" data-align=\"center\">12 months+<\/td><td class=\"has-text-align-center\" data-align=\"center\">6\u201312 months<\/td><td class=\"has-text-align-center\" data-align=\"center\">6\u201312 months<\/td><td class=\"has-text-align-center\" data-align=\"center\">3\u20136 months<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Max reflow cycles<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">3+<\/td><td class=\"has-text-align-center\" data-align=\"center\">3+<\/td><td class=\"has-text-align-center\" data-align=\"center\">3+<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\">1\u20132<\/td><td class=\"has-text-align-center\" data-align=\"center\">2\u20133<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>RoHS compliant<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>BGA compatible<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">\u274c<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Wire bonding<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">\u274c<\/td><td class=\"has-text-align-center\" data-align=\"center\">Limited<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u2705<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u274c<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u274c<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u274c<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>High-freq (&gt;1 GHz)<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Poor<\/td><td class=\"has-text-align-center\" data-align=\"center\">Poor (Ni loss)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Poor (Ni loss)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Good<\/td><td class=\"has-text-align-center\" data-align=\"center\">Best<\/td><td class=\"has-text-align-center\" data-align=\"center\">Good<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Cost vs. LF-HASL<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Baseline<\/td><td class=\"has-text-align-center\" data-align=\"center\">+30\u201360%<\/td><td class=\"has-text-align-center\" data-align=\"center\">+80\u2013150%<\/td><td class=\"has-text-align-center\" data-align=\"center\">+0\u20135%<\/td><td class=\"has-text-align-center\" data-align=\"center\">+15\u201325%<\/td><td class=\"has-text-align-center\" data-align=\"center\">+10\u201320%<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Primary risk<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Rough surface<\/td><td class=\"has-text-align-center\" data-align=\"center\">Black pad<\/td><td class=\"has-text-align-center\" data-align=\"center\">High cost<\/td><td class=\"has-text-align-center\" data-align=\"center\">Short shelf life<\/td><td class=\"has-text-align-center\" data-align=\"center\">Creep corrosion<\/td><td class=\"has-text-align-center\" data-align=\"center\">Tin whiskers<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>IPC-4552 standard<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">IPC-4552A<\/td><td class=\"has-text-align-center\" data-align=\"center\">IPC-4552B<\/td><td class=\"has-text-align-center\" data-align=\"center\">IPC-4556<\/td><td class=\"has-text-align-center\" data-align=\"center\">IPC-4552A<\/td><td class=\"has-text-align-center\" data-align=\"center\">IPC-4553<\/td><td class=\"has-text-align-center\" data-align=\"center\">IPC-4554<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<h2>Cost Reality Check \u2014 What Surface Finish Actually Adds to Your Board Price<\/h2>\n\n\n<p>Surface finish cost is one of the least transparently discussed topics in PCB procurement. Every competitor guide says &#8220;HASL is cheapest, ENEPIG is most expensive&#8221; without giving the numbers that let you make an actual budget decision.<\/p>\n\n\n\n<p>Surface finish typically contributes 5\u201315% of total bare board cost, depending on board complexity, copper area, and order volume. The main cost drivers are: gold and palladium commodity prices (ENIG and ENEPIG), chemical bath management complexity (ENIG, ENEPIG, Immersion Silver, Immersion Tin), and process cycle time.<\/p>\n\n\n<h3>Typical cost premium versus LF-HASL baseline<\/h3>\n\n\n<p>(standard 4-layer board, 100 \u00d7 100 mm, 1 oz copper, prototype quantities):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Surface Finish<\/th><th>Typical Premium Range<\/th><th>Primary Cost Driver<\/th><\/tr><\/thead><tbody><tr><td>HASL (Sn\/Pb)<\/td><td>\u22125% (lower in some markets)<\/td><td>Lead-tin alloy cost advantage<\/td><\/tr><tr><td><strong>LF-HASL<\/strong><\/td><td><strong>Baseline (0%)<\/strong><\/td><td>\u2014<\/td><\/tr><tr><td>OSP<\/td><td>+0\u20135%<\/td><td>Simple process; marginal chemical cost<\/td><\/tr><tr><td>Immersion Tin<\/td><td>+10\u201320%<\/td><td>Chemical bath management; tin cost<\/td><\/tr><tr><td>Immersion Silver<\/td><td>+15\u201325%<\/td><td>Silver commodity price<\/td><\/tr><tr><td>ENIG<\/td><td>+30\u201360%<\/td><td>Gold price + chemical process control<\/td><\/tr><tr><td>ENEPIG<\/td><td>+80\u2013150%<\/td><td>Palladium + gold + added process complexity<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Important caveats: at volume production (1,000+ boards), ENIG&#8217;s premium typically compresses to +20\u201335% because gold bath utilization improves and process amortization spreads. OSP&#8217;s marginal cost advantage over ENIG often disappears when first-pass assembly yield differences are factored in \u2014 OSP&#8217;s storage sensitivity and single-reflow limitation can generate rework costs that exceed the finish savings on any order where assembly conditions are not tightly controlled.<\/p>\n\n\n\n<p>The practical takeaway: for most commercial designs, the cost difference between LF-HASL and ENIG is $0.50\u20132.00 per board at prototype quantities. This is rarely the deciding factor in a design with $15\u201350 of component content. Optimize for yield and reliability first; optimize for finish cost only when all other selection criteria are equal.<\/p>\n\n\n<h2>The 5-Step PCB Surface Finish Selection Framework<\/h2>\n\n\n<p>Apply these steps in sequence. Each step eliminates options; the remaining candidates at Step 5 are all viable, and the final choice is a cost and availability decision.<\/p>\n\n\n<h3>Step 1 \u2014 Confirm regulatory compliance requirements<\/h3>\n\n\n<p>Determine the markets your product will enter. Export to the European Union, United Kingdom, or California (under RoPHs-equivalent regulations) requires compliance with the RoHS Directive \u2014 which prohibits the use of lead (Pb) in electronic assemblies. Traditional Sn\/Pb HASL is non-compliant and must be excluded. All other standard finishes (LF-HASL, ENIG, ENEPIG, OSP, Immersion Silver, Immersion Tin) are RoHS-compliant. Note that certain industrial equipment categories retain RoHS exemptions; confirm your product&#8217;s classification with your regulatory counsel before assuming compliance.<\/p>\n\n\n<h3>Step 2 \u2014 Evaluate minimum component pitch and package types<\/h3>\n\n\n<p>If your BOM contains any BGA, CSP, \u00b5BGA, or flip-chip package \u2192 eliminate HASL (both variants) immediately. If any component has a lead pitch below 0.5 mm (fine-pitch QFP, 0402 or smaller passives in dense arrays) \u2192 HASL is also eliminated. If the design includes wire bonding \u2192 only ENEPIG remains. For designs with all components at pitch \u2265 0.65 mm and no BGA \u2192 all finishes remain viable; continue to Step 3.<\/p>\n\n\n\n<p>For guidance on how component pitch and package density interact with the DFM requirements for surface finish selection, see <a href=\"https:\/\/wellspcba.com\/pt\/dfm-in-pcb-assembly\/\" target=\"_blank\" rel=\"noreferrer noopener\">DFM in PCB Assembly<\/a>.<\/p>\n\n\n<h3>Step 3 \u2014 Assess signal frequency requirements<\/h3>\n\n\n<p>If any signal net on the board operates above 1 GHz (RF front-ends, antenna feeds, mmWave interconnects, PCIe Gen 4\/5 data lanes, 25G+ Ethernet lanes) \u2192 eliminate ENIG and ENEPIG due to the ferromagnetic nickel loss mechanism described in the Immersion Silver section above. The remaining options for high-frequency designs are: Immersion Silver (preferred), OSP (acceptable), and LF-HASL (marginal \u2014 the rough surface scatters high-frequency signals). If all signals operate below 1 GHz \u2192 all remaining options are electrically equivalent; continue to Step 4.<\/p>\n\n\n<h3>Step 4 \u2014 Determine shelf life and assembly window requirements<\/h3>\n\n\n<p>How long will boards sit between fabrication and assembly? If the answer is: under 30 days in a controlled environment \u2192 OSP is viable. Between 1 and 6 months \u2192 Immersion Silver, Immersion Tin, or ENIG. Between 6 and 18 months \u2192 ENIG is the standard choice; Immersion Silver is acceptable with proper sealed storage. Over 18 months, or genuinely uncertain \u2192 ENIG or ENEPIG only. Hard Gold for contact areas with wear requirements.<\/p>\n\n\n<h3>Step 5 \u2014 Match the reliability class of the application<\/h3>\n\n\n<p>Match to IPC-6012 performance class requirements. Class 1 (consumer, non-critical) \u2192 LF-HASL or OSP are sufficient. Class 2 (industrial, communications, computing) \u2192 ENIG is the standard; LF-HASL acceptable for coarse-pitch mixed-technology. Class 3 (high reliability: medical, automotive, military, aerospace) \u2192 ENIG with documented XRF verification, or ENEPIG. Class 3\/A (space, life-critical implants) \u2192 ENEPIG or Hard Gold exclusively. (<a href=\"https:\/\/www.ipc.org\/ipc-6012\" target=\"_blank\" rel=\"noopener\">IPC-6012 standard<\/a>)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"597\" data-src=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-selection-framework-infographic-wells-electronics-1024x597.webp\" alt=\"PCB surface finish 5-step selection framework infographic \u2014 how to choose between HASL, ENIG, ENEPIG, OSP, Immersion Silver, and Immersion Tin based on compliance, pitch, frequency, shelf life, and reliability class. By Wells Electronics\" class=\"wp-image-1684 lazyload\" data-srcset=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-selection-framework-infographic-wells-electronics-1024x597.webp 1024w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-selection-framework-infographic-wells-electronics-300x175.webp 300w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-selection-framework-infographic-wells-electronics-768x448.webp 768w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-selection-framework-infographic-wells-electronics-1536x896.webp 1536w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-selection-framework-infographic-wells-electronics.webp 1642w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/597;\" \/><\/figure>\n\n\n<h2>Industry-Specific Surface Finish Recommendations<\/h2>\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Industry \/ Application<\/th><th>Recommended Finish<\/th><th>Key Reason<\/th><\/tr><\/thead><tbody><tr><td>Medical devices (ISO 13485, IPC Class 3)<\/td><td>ENIG \/ ENEPIG<\/td><td>Long shelf life for regulated supply chains; full traceability; IPC Class 3 solder joint reliability<\/td><\/tr><tr><td>Automotive electronics (IATF 16949)<\/td><td>ENIG \/ ENEPIG<\/td><td>Wide-temperature solderability; multi-reflow tolerance; vibration-induced fatigue resistance at solder joints<\/td><\/tr><tr><td>Aerospace \/ Defense<\/td><td>ENEPIG \/ Hard Gold<\/td><td>Black pad unacceptable; maximum corrosion resistance; wire bonding capability<\/td><\/tr><tr><td>5G \/ RF \/ Microwave (&gt;1 GHz)<\/td><td>Immersion Silver \/ OSP<\/td><td>No ferromagnetic nickel; minimum insertion loss; surface uniformity for controlled impedance<\/td><\/tr><tr><td>Consumer electronics (high-volume SMT)<\/td><td>OSP \/ LF-HASL<\/td><td>Cost optimization; controlled assembly window; single-pass reflow<\/td><\/tr><tr><td>IoT hardware (medium-volume)<\/td><td>ENIG<\/td><td>Best overall cost-reliability balance; tolerates supply chain variability<\/td><\/tr><tr><td>Industrial control \/ VFDs<\/td><td>LF-HASL \/ ENIG<\/td><td>THT + SMT mixed assembly; cost-conscious with reliability baseline<\/td><\/tr><tr><td>High-speed digital (PCIe Gen 4\/5, 112G)<\/td><td>Immersion Silver \/ ENIG<\/td><td>Signal integrity margin; ENIG acceptable below 15 GHz<\/td><\/tr><tr><td>Rapid prototyping<\/td><td>LF-HASL \/ OSP<\/td><td>Fastest turnaround; lowest incremental cost<\/td><\/tr><tr><td>Press-fit connector boards<\/td><td>Immersion Tin<\/td><td>Compliant tin layer for gas-tight press-fit joints<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<h2>What to Ask Your PCB Manufacturer Before Confirming Surface Finish<\/h2>\n\n\n<p>Most of the production problems that originate with surface finish selection are actually surface finish execution problems \u2014 the right finish specified, but applied by a supplier without adequate process controls. These are the questions and documents that separate a controlled process from a hope-based one.<\/p>\n\n\n<h3>Quality Documentation to Request<\/h3>\n\n\n<p><strong>For ENIG and ENEPIG orders:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IPC-4552B (ENIG) or IPC-4556 (ENEPIG) compliance declaration \u2014 confirms the factory operates to current specification<\/li>\n\n\n\n<li>XRF thickness measurement report for your production batch \u2014 gold layer must fall within 0.05\u20130.125 \u00b5m for ENIG; any measurement above 0.15 \u00b5m indicates process drift and elevated black pad risk<\/li>\n\n\n\n<li>Nickel bath chemistry record for the plating run \u2014 phosphorus content should be 7\u201311 wt%; deviation outside this range affects both solderability and corrosion resistance<\/li>\n\n\n\n<li>Gold bath pH log \u2014 should be maintained at 4.5\u20135.5; pH excursions below 4.5 are the primary driver of over-aggressive nickel attack<\/li>\n<\/ul>\n\n\n\n<p>For further context on how these quality verification documents integrate with supplier qualification, see <a href=\"https:\/\/wellspcba.com\/pt\/coupon-test-station-in-pcb\/\" target=\"_blank\" rel=\"noreferrer noopener\">PCB coupon test station verification<\/a> \u2014 coupon-based XRF measurement is the same methodology applied to surface finish verification.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"683\" data-src=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-xrf-thickness-measurement-enig-qc-laboratory-1024x683.webp\" alt=\"XRF X-ray fluorescence instrument measuring ENIG gold and nickel plating thickness on PCB surface finish sample at Wells Electronics quality control laboratory \u2014 per-lot thickness verification process\" class=\"wp-image-1683 lazyload\" data-srcset=\"https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-xrf-thickness-measurement-enig-qc-laboratory-1024x683.webp 1024w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-xrf-thickness-measurement-enig-qc-laboratory-300x200.webp 300w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-xrf-thickness-measurement-enig-qc-laboratory-768x512.webp 768w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-xrf-thickness-measurement-enig-qc-laboratory-18x12.webp 18w, https:\/\/wellspcba.com\/wp-content\/uploads\/2026\/05\/pcb-surface-finish-xrf-thickness-measurement-enig-qc-laboratory.webp 1536w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/683;\" \/><\/figure>\n\n\n\n<p><strong>For OSP orders:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>OSP chemical product technical datasheet \u2014 confirms maximum reflow temperature tolerance and rated shelf life under specified storage conditions<\/li>\n\n\n\n<li>Storage condition records for your boards \u2014 temperature and humidity logs for the period between fabrication and delivery<\/li>\n<\/ul>\n\n\n\n<p><strong>For Immersion Silver orders:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Silver layer thickness measurement report \u2014 target 0.12\u20130.4 \u00b5m; thinner deposits are more susceptible to tarnishing<\/li>\n\n\n\n<li>Anti-tarnish packaging specification \u2014 confirms boards are packaged in sealed barrier bags with desiccant before shipment<\/li>\n<\/ul>\n\n\n\n<p><strong>For all finishes:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IPC-6012 applicable class compliance declaration \u2014 confirms the fabrication process meets the workmanship standard for your specified class<\/li>\n<\/ul>\n\n\n<h3>Storage and Handling by Finish Type<\/h3>\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Finish<\/th><th>Storage Conditions<\/th><th>Maximum Window<\/th><th>Handling Notes<\/th><\/tr><\/thead><tbody><tr><td>LF-HASL<\/td><td>Standard PCB storage<\/td><td>12+ months<\/td><td>Normal handling<\/td><\/tr><tr><td>ENIG<\/td><td>Sealed packaging, standard conditions<\/td><td>12\u201318 months<\/td><td>Normal handling<\/td><\/tr><tr><td>ENEPIG<\/td><td>Sealed packaging, standard conditions<\/td><td>12+ months<\/td><td>Normal handling<\/td><\/tr><tr><td>OSP<\/td><td>15\u201325\u00b0C, RH \u2264 60%; sealed<\/td><td>6\u201312 months from fab<\/td><td>Do not open until assembly; assemble within 30 days of opening<\/td><\/tr><tr><td>Immersion Silver<\/td><td>Anti-tarnish barrier bag + desiccant<\/td><td>6\u201312 months<\/td><td>Powder-free gloves required at all times; avoid sulfur-containing environments<\/td><\/tr><tr><td>Immersion Tin<\/td><td>Moisture barrier packaging<\/td><td>3\u20136 months<\/td><td>Avoid mechanical contact; fragile thin coating<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<h3>How Wells Electronics Ensures Surface Finish Quality<\/h3>\n\n\n<p>At Wells Electronics, surface finish quality control is not a customer-requested add-on \u2014 it is a standard production requirement. For all ENIG orders, XRF thickness verification is performed on fabrication coupons from the production panel before any boards are released. Gold layer and nickel layer measurements are documented in the shipment quality record and available to customers on request.<\/p>\n\n\n\n<p>ENIG chemical bath management follows daily monitoring protocols: nickel bath phosphorus content, stabilizer concentration, and gold bath pH are measured and logged every production day. Bath replenishment is triggered by parameter deviation, not by calendar interval. This approach prevents the gradual bath drift that produces black pad defects in factories that manage by time rather than by chemistry.<\/p>\n\n\n\n<p>OSP boards are stored in a temperature and humidity controlled zone and managed under first-in, first-out (FIFO) inventory control, with the fabrication date marked on each package. Immersion Silver boards are packaged in anti-tarnish barrier bags with desiccant immediately after fabrication, with the assembly-by date printed on the outer label.<\/p>\n\n\n\n<p>For designs requiring surface finish selection guidance before design is complete, Wells process engineers are available for pre-submission consultation at no charge. For a full picture of how surface finish specification fits into the broader design-to-delivery workflow, the <a href=\"https:\/\/wellspcba.com\/pt\/ultimate-turnkey-pcba-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">Turnkey PCBA Guide<\/a> covers every stage from Gerber file review through final shipment.<\/p>\n\n\n<h2>5 Surface Finish Mistakes Engineers Make \u2014 and How to Avoid Them<\/h2>\n\n<h3>Mistake 1: Defaulting to HASL on a Fine-Pitch SMT Board<\/h3>\n\n\n<p>The scenario: a design with 0.4mm-pitch QFN, several 0402 passives, and a cost-conscious procurement team. HASL is specified because &#8220;it&#8217;s cheaper and we&#8217;ve always used it.&#8221; The result: inconsistent solder paste heights across QFN pads, bridging on 0402 arrays, and a first-article rework rate of 15\u201320%.<\/p>\n\n\n\n<p>The fix: any board with component pitch below 0.5mm or any BGA\/CSP package requires a flat finish. ENIG is the standard recommendation; OSP is acceptable if the assembly window is controlled. The HASL cost saving of $0.50\u20131.00 per board is erased by a single rework incident.<\/p>\n\n\n<h3>Mistake 2: Specifying OSP Without Defining the Assembly Window in the Purchase Order<\/h3>\n\n\n<p>OSP&#8217;s shelf life is quoted as 6\u201312 months, but this assumes the boards remain in sealed packaging and are stored under controlled conditions. Once the package is opened, the organic film begins degrading \u2014 and the first reflow accelerates that degradation significantly. A board opened, partially assembled, and reflowed again two weeks later may have OSP on its unassembled pads that is at the margin of solderability.<\/p>\n\n\n\n<p>The fix: define the maximum time from package opening to first reflow in your purchase order or incoming inspection criteria. 30 days is a reasonable and conservative limit. If your assembly schedule cannot reliably meet this window, switch to ENIG.<\/p>\n\n\n<h3>Mistake 3: Specifying ENIG on an RF Board Without Checking Operating Frequency<\/h3>\n\n\n<p>The scenario: a 2.4 GHz Wi-Fi module designed with ENIG because &#8220;it&#8217;s the standard finish.&#8221; At 2.4 GHz, ENIG&#8217;s nickel loss contribution is moderate \u2014 perhaps 0.15\u20130.2 dB\/inch above the copper baseline. For a short RF trace, this may be within margin. At 5 GHz, 24 GHz, or 77 GHz, the insertion loss penalty compounds and can push a marginal design below the link budget.<\/p>\n\n\n\n<p>The fix: for any board with RF traces, antenna elements, or baluns above 1 GHz, model the insertion loss with the surface finish&#8217;s nickel layer included. If the margin is less than 3 dB, switch to Immersion Silver. The cost difference is marginal; the signal integrity improvement is real.<\/p>\n\n\n<h3>Mistake 4: Placing an ENIG Order Without Requesting an XRF Report<\/h3>\n\n\n<p>If black pad occurs in your production, root-cause analysis will eventually trace it to the gold plating bath chemistry at the time of fabrication. By that point, the bath records may no longer exist, and the factory will have no accountability mechanism. The only reliable protection is requesting XRF documentation at the time of order.<\/p>\n\n\n\n<p>The fix: add a line to your standard ENIG purchase order: &#8220;XRF thickness report for gold layer (Au, all production coupons) required with shipment.&#8221; A supplier that refuses or cannot produce this report is not operating an adequately controlled ENIG process. See <a href=\"https:\/\/wellspcba.com\/pt\/how-to-choose-pcba-manufacturing-partner\/\" target=\"_blank\" rel=\"noreferrer noopener\">how to choose a PCBA manufacturing partner<\/a> for more supplier qualification criteria.<\/p>\n\n\n<h3>Mistake 5: Changing Surface Finish Mid-Program Without Re-Running DFM<\/h3>\n\n\n<p>Surface finish selection affects not just the pad coating but the pad design itself. ENIG is typically applied to non-solder-mask-defined (NSMD) pads \u2014 where the solder mask opening is slightly larger than the copper pad \u2014 which is the recommended configuration for BGA and fine-pitch SMT. OSP is compatible with both NSMD and solder-mask-defined (SMD) pad configurations. HASL is often used with slightly different aperture ratios in the SMT stencil to account for the existing solder volume on the pad.<\/p>\n\n\n\n<p>Switching from ENIG to OSP midway through production, or from HASL to ENIG when a design matures, requires a DFM re-review of pad geometry and stencil aperture specifications. Skipping this step introduces yield variation that engineering teams often attribute to assembly process variation when the root cause is a pad design mismatch with the new finish.<\/p>\n\n\n<h2>Frequently Asked Questions<\/h2>\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-1&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-1-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-1\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Q1: What is the best PCB surface finish for BGA packages?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-1\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-1-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>ENIG is the standard choice for BGA packages at any pitch. Its Ra \u2264 0.8 \u00b5m surface flatness ensures uniform solder ball contact across the entire BGA footprint, which is the primary requirement for high assembly yield on fine-pitch BGAs. For pitch at or below 0.4 mm, or for BGAs on assemblies requiring simultaneous wire bonding, ENEPIG provides additional reliability margin \u2014 specifically eliminating black pad risk that, while low in a well-controlled ENIG process, is not zero. OSP is a technically viable alternative for BGA at moderate pitch in high-volume applications where the assembly window can be tightly controlled.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-2&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-2-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-2\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Q2: Is LF-HASL still relevant in 2026?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-2\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-2-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Yes, for the right designs. LF-HASL remains the optimal choice for through-hole assemblies and mixed SMT\/THT boards where wave soldering dominates, for rapid prototypes requiring minimum cost and maximum fabrication speed, and for coarse-pitch designs (\u2265 0.65 mm) where surface flatness is not a constraint. The estimated 70% global market share of HASL cited by several industry references reflects the large installed base of through-hole and coarse-pitch production still running worldwide. HASL is not obsolete \u2014 it is simply not appropriate for modern fine-pitch SMT or BGA assembly.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-3&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-3-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-3\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Q3: What causes ENIG black pad and how do I prevent it?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-3\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-3-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Black pad is a hyper-corrosion defect at the nickel-gold interface caused by an over-aggressive gold displacement reaction during ENIG plating. The gold bath attacks nickel grain boundaries, concentrating phosphorus in a brittle, poorly bondable intermetallic layer. The three process conditions that cause it are: gold bath pH below 4.5, nickel bath phosphorus content outside 7\u201311 wt%, and gold layer thickness above 0.15 \u00b5m. Prevention requires supplier process control \u2014 specifically, daily bath chemistry monitoring, bath replenishment by parameter measurement rather than calendar schedule, and XRF verification of gold layer thickness on every production batch. Request an XRF report and nickel bath chemistry record with your ENIG order. If the supplier cannot provide these, consider ENEPIG, where the palladium diffusion barrier makes black pad chemically impossible.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-4&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-4-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-4\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Q4: Which surface finish is best for RF and microwave designs above 1 GHz?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-4\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-4-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Immersion Silver is the technically correct choice for RF and high-frequency PCB designs operating above 1 GHz. The reason is the skin effect: at microwave frequencies, signal current flows only in the outermost micrometers of the conductor surface. ENIG&#8217;s 3\u20135 \u00b5m nickel layer is ferromagnetic (\u00b5r \u2248 1.8\u201310), which dramatically increases signal attenuation at GHz frequencies \u2014 a measured 0.3\u20130.5 dB\/inch penalty at 10 GHz compared to silver or copper. Immersion Silver has no magnetic nickel layer; the silver-copper interface is non-magnetic, so the skin effect occurs only in low-loss materials. OSP is a viable alternative for RF designs where Immersion Silver&#8217;s handling sensitivity or shelf life limitations are unacceptable; at OSP&#8217;s near-zero coating thickness, the copper surface is the effective electrical interface.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-5&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-5-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-5\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Q5: How long can PCBs be stored with different surface finishes before assembly?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-5\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-5-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Storage life varies significantly. LF-HASL and ENIG boards can reliably be stored for 12 months or more under standard PCB packaging conditions. ENEPIG is comparable to ENIG. Immersion Silver and OSP are rated for 6\u201312 months from fabrication, but Immersion Silver requires anti-tarnish barrier packaging and OSP requires continuous storage below 25\u00b0C \/ 60% RH in sealed packaging. Once OSP packaging is opened, boards should be assembled within 30 days. Immersion Tin has the shortest shelf life at 3\u20136 months, driven by ongoing copper-tin intermetallic growth even at room temperature. For supply chains with unpredictable assembly timing, ENIG is the most forgiving choice.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-6&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-6-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-6\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Q6: What is the difference between ENIG and ENEPIG, and when does ENEPIG justify the cost?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-6\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-6-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Both ENIG and ENEPIG deposit a nickel layer followed by gold \u2014 the difference is an intermediate palladium layer (0.05\u20130.15 \u00b5m) inserted between nickel and gold in ENEPIG. This palladium layer intercepts the gold displacement reaction before it reaches the nickel grain boundaries, physically preventing the hyper-corrosion that causes black pad. The palladium layer also makes wire bonding possible \u2014 ENIG&#8217;s gold layer is too thin to support thermosonic or aluminum wire bond pull strength.<\/p>\n\n\n\n<p>ENEPIG justifies its 80\u2013150% cost premium over LF-HASL when: (1) the application cannot tolerate black pad risk \u2014 aerospace, military, implantable medical; (2) the board requires both soldering and wire bonding; or (3) the design uses a mixed-technology assembly that would otherwise require two different surface finishes. For standard industrial and commercial applications with a well-controlled ENIG supplier, ENIG provides sufficient reliability. The upgrade to ENEPIG is a consequence-of-failure decision: if a black pad failure in your product would cause patient injury, flight system failure, or irretrievable field failure, ENEPIG&#8217;s cost premium is not optional.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div id=\"bitforms_1_1676_1\" class=\"bit-form Au1 Cd1 _frm-bg-b1\">\n      \n          <form novalidate id=\"form-bitforms_1_1676_1\" class=\"As1 At1 _frm-b1\" enctype=\"multipart\/form-data\" method='post' action=\"\">\n              <input type=\"text\" class=\"d-none\" name=\"csrf\" value=\"eEyc1cfMpZ\/ZJr7NUGX8TT9WQ0X\/oRjFnw\/JcCkUOP0=\">\n              <input type=\"text\" class=\"d-none\" name=\"t_identity\" value=\"m4qdh0akvzRYDbkSzrn81YpoNbTBrnPSefM7DxnBFXQ=\">\n              \n              <input type=\"text\" class=\"d-none\" name=\"bitforms_id\" value=\"bitforms_1\">\n                  <div class=\"btcd-fld-itm b1-2\">\n        <div \n      \n      class=\"R1 V1 W1 X1 b1-2-fld-wrp bf-fld-wrp\"\n    >\n            <div \n        \n        class=\"L1 AG1 AK1 b1-2-lbl-wrp bf-lbl-wrp\" \n      >\n              <label \n         \n        class=\"A1 E1 L1 AG1 AH1 AI1 AJ1 Ca1 b1-2-lbl bf-lbl\"\n        for=\"b1-2-1\">\n        \n        \n        Nome\n        \n              <span \n        \n        class=\"AL1 AM1 b1-2-req-smbl bf-req-smbl\" \n      >\n        *\n      <\/span>\n      <\/label>\n        \n      <\/div>\n      <div \n        \n        class=\"b1-2-inp-wrp bf-inp-wrp\"\n      > \n            <div \n      \n      class=\"X1 AF1 b1-2-inp-fld-wrp bf-inp-fld-wrp\"\n    >\n      <input\n        \n        id=\"b1-2-1\"\n        \n        class=\"B1 F1 G1 i1 j1 k1 l1 m1 n1 o1 p1 q1 r1 s1 t1 u1 v1 w1 x1 y1 z1 AA1 AB1 AC1 AD1 AE1 CQ1 CR1 CS1 CT1 CU1 CV1 CW1 CX1 CY1 CZ1 b1-2-fld bf-fld\"\n        type=\"text\"\n        required\n placeholder='Jo\u00e3o Ningu\u00e9m'\n        \n        \n        autocomplete='name'\n        \n        name='text-b1-2'\n        \n        \n      \/>\n      \n      \n    <\/div>\n    \n        \n            <div class='S1 T1 U1 b1-2-err-wrp bf-err-wrp' style=\"opacity: 0 !important; height: 0px !important;\">\n    <div class='Q1 b1-2-err-inner bf-err-inner'>\n      \n        \n        <div   class=\"A1 E1 Y1 Z1 a1 b1 c1 d1 e1 f1 g1 h1 b1-2-err-msg bf-err-msg  R1 b1-2-err-txt bf-err-txt\" style='display: none !important;'><\/div>\n        \n      \n      <\/div>\n    <\/div>\n      <\/div>\n    <\/div>\n<\/div><div class=\"btcd-fld-itm b1-5\">\n        <div \n      \n      class=\"R1 V1 W1 X1 b1-5-fld-wrp bf-fld-wrp\"\n    >\n            <div \n        \n        class=\"L1 AG1 AK1 b1-5-lbl-wrp bf-lbl-wrp\" \n      >\n              <label \n         \n        class=\"A1 E1 L1 AG1 AH1 AI1 AJ1 Ca1 b1-5-lbl bf-lbl\"\n        for=\"b1-5-1\">\n        \n        \n        Correio eletr\u00f3nico\n        \n              <span \n        \n        class=\"AL1 AM1 b1-5-req-smbl bf-req-smbl\" \n      >\n        *\n      <\/span>\n      <\/label>\n        \n      <\/div>\n      <div \n        \n        class=\"b1-5-inp-wrp bf-inp-wrp\"\n      > \n            <div \n      \n      class=\"X1 AF1 b1-5-inp-fld-wrp bf-inp-fld-wrp\"\n    >\n      <input\n        \n        id=\"b1-5-1\"\n        \n        class=\"B1 F1 G1 i1 j1 k1 l1 m1 n1 o1 p1 q1 r1 s1 t1 u1 v1 w1 x1 y1 z1 AA1 AB1 AC1 AD1 AE1 CQ1 CR1 CS1 CT1 CU1 CV1 CW1 CX1 CY1 CZ1 b1-5-fld bf-fld\"\n        type=\"email\"\n        required\n placeholder='example@mail.com'\n        \n        \n        autocomplete='email'\n        \n        name='email-b1-5'\n        \n        \n      \/>\n      \n      \n    <\/div>\n    \n        \n            <div class='S1 T1 U1 b1-5-err-wrp bf-err-wrp' style=\"opacity: 0 !important; height: 0px !important;\">\n    <div class='Q1 b1-5-err-inner bf-err-inner'>\n      \n        \n        <div   class=\"A1 E1 Y1 Z1 a1 b1 c1 d1 e1 f1 g1 h1 b1-5-err-msg bf-err-msg  R1 b1-5-err-txt bf-err-txt\" style='display: none !important;'><\/div>\n        \n      \n      <\/div>\n    <\/div>\n      <\/div>\n    <\/div>\n<\/div><div class=\"btcd-fld-itm b1-8\">\n        <div \n      \n      class=\"R1 V1 W1 X1 b1-8-fld-wrp bf-fld-wrp\"\n    >\n            <div \n        \n        class=\"L1 AG1 AK1 b1-8-lbl-wrp bf-lbl-wrp\" \n      >\n              <label \n         \n        class=\"A1 E1 L1 AG1 AH1 AI1 AJ1 Ca1 b1-8-lbl bf-lbl\"\n        for=\"b1-8-1\">\n        \n        \n        Company\n        \n              <span \n        \n        class=\"AL1 AM1 b1-8-req-smbl bf-req-smbl\" \n      >\n        *\n      <\/span>\n      <\/label>\n        \n      <\/div>\n      <div \n        \n        class=\"b1-8-inp-wrp bf-inp-wrp\"\n      > \n            <div \n      \n      class=\"X1 AF1 b1-8-inp-fld-wrp bf-inp-fld-wrp\"\n    >\n      <textarea\n        \n        id=\"b1-8-1\"\n        class=\"B1 F1 G1 i1 j1 k1 l1 m1 o1 p1 r1 s1 t1 u1 v1 w1 x1 y1 z1 AA1 AB1 AC1 AD1 AE1 AN1 AO1 AP1 CQ1 CR1 CS1 CT1 CU1 CV1 CW1 CX1 CY1 CZ1 b1-8-fld bf-fld\"\n        required\n placeholder='\u5360\u4f4d\u7b26...'\n        \n        name='textarea-1-8'\n      ><\/textarea>\n      \n      \n    <\/div>\n        \n            <div class='S1 T1 U1 b1-8-err-wrp bf-err-wrp' style=\"opacity: 0 !important; height: 0px !important;\">\n    <div class='Q1 b1-8-err-inner bf-err-inner'>\n      \n        \n        <div   class=\"A1 E1 Y1 Z1 a1 b1 c1 d1 e1 f1 g1 h1 b1-8-err-msg bf-err-msg  R1 b1-8-err-txt bf-err-txt\" style='display: none !important;'><\/div>\n        \n      \n      <\/div>\n    <\/div>\n      <\/div>\n    <\/div>\n<\/div><div class=\"btcd-fld-itm b1-6\">\n        <div \n      \n      class=\"R1 V1 W1 X1 b1-6-fld-wrp bf-fld-wrp\"\n    >\n            <div \n        \n        class=\"L1 AG1 AK1 b1-6-lbl-wrp bf-lbl-wrp\" \n      >\n              <label \n         \n        class=\"A1 E1 L1 AG1 AH1 AI1 AJ1 Ca1 b1-6-lbl bf-lbl\"\n        for=\"b1-6-1\">\n        \n        \n        N\u00famero de telefone\n        \n        \n      <\/label>\n        \n      <\/div>\n      <div \n        \n        class=\"b1-6-inp-wrp bf-inp-wrp\"\n      > \n            <div class=\"L1 X1 q1 Am1 b1-6-phone-fld-container bf-phone-fld-container\">\n      <div \n        \n        class=\"B1 E1 G1 L1 Q1 i1 j1 k1 l1 Aa1 Ai1 Bd1 Be1 Bf1 Bg1 Bh1 Bi1 Bj1 Bk1 Bl1 CR1 CS1 Cx1 Cy1 Cz1 DA1 DB1 DC1 DD1 DE1 b1-6-phone-fld-wrp bf-phone-fld-wrp\"\n      >\n        <input\n          name='phone-number-1-6'\n          \n          type=\"text\"\n          title=\"N\u00famero de telefone Entrada oculta\"\n          class=\"b1-6-phone-hidden-input bf-phone-hidden-input d-none\"\n          \n          \n          \n        \/>\n        <div class=\"E1 X1 Aj1 b1-6-phone-inner-wrp bf-phone-inner-wrp\">\n                    <div\n            class=\"A1 D1 E1 J1 N1 Q1 X1 a1 e1 h1 AJ1 AS1 BA1 BB1 CP1 Cg1 b1-6-dpd-wrp bf-dpd-wrp\"\n            role=\"combobox\"\n            aria-live=\"assertive\"\n            aria-labelledby=\"country-label-2\"\n            aria-expanded=\"false\"\n            tabindex=\"0\"          >\n            \n                  <div class=\"S1 AQ1 AR1 Az1 b1-6-dpd-down-btn bf-dpd-down-btn\">\n              <svg\n                width=\"15\"\n                height=\"15\"\n                role=\"img\"\n                title=\"\u00cdcone de seta para baixo\"\n                viewbox=\"0 0 24 24\"\n                fill=\"none\"\n                stroke=\"currentColor\"\n                stroke-width=\"2\"\n                stroke-linecap=\"round\"\n                stroke-linejoin=\"round\"\n              >\n                <polyline points=\"6 9 12 15 18 9\" \/>\n              <\/svg>\n            <\/div>\n          <\/div>\n          <input\n            \n            aria-label=\"N\u00famero de telefone\"\n            type=\"tel\"\n            class=\"F1 G1 l1 o1 p1 r1 v1 AS1 AY1 Bm1 CS1 CT1 b1-6-phone-number-input bf-phone-number-input\"\n            autocomplete=\"tel\"\n            placeholder='N\u00famero de telefone'\n            tabindex=\"0\"          \/>\n                <button\n        \n        type=\"button\"\n        title=\"Valor claro\"\n        class=\"D1 AQ1 AT1 AU1 AV1 AW1 AX1 AY1 AZ1 Aa1 Ab1 Ac1 Ad1 Ae1 Af1 Ag1 BC1 BD1 Cb1 Cc1 Ch1 Ci1 b1-6-input-clear-btn bf-input-clear-btn\"\n      >\n        <svg\n          width=\"12\"\n          height=\"12\"\n          viewbox=\"0 0 24 24\"\n          fill=\"none\"\n          stroke=\"currentColor\"\n          stroke-width=\"2\"\n          stroke-linecap=\"round\"\n          stroke-linejoin=\"round\"\n        >\n          <line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\" \/>\n          <line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\" \/>\n        <\/svg>\n      <\/button>\n        <\/div>   \n                <div \n          \n          class=\"E1 L1 Q1 Ai1 Al1 Bc1 b1-6-option-wrp bf-option-wrp\"\n        >\n          <div class=\"E1 Q1 X1 Ai1 b1-6-option-inner-wrp bf-option-inner-wrp\">\n            <div \n              \n              class=\"X1 Bb1 b1-6-option-search-wrp bf-option-search-wrp\"\n            >\n              <input\n                \n                aria-label=\"Pesquisa de pa\u00edses\"\n                type=\"search\"\n                class=\"F1 J1 L1 l1 AI1 Ah1 BF1 BG1 BH1 BI1 BJ1 BK1 BL1 BM1 CS1 Cj1 Ck1 Cl1 Cm1 b1-6-opt-search-input bf-opt-search-input\"\n                placeholder=\"Pesquisa de pa\u00edses\"\n                autocomplete=\"off\"\n                tabindex=\"-1\"\n              \/>\n              <svg\n                \n                class=\"AH1 Aa1 Ac1 Ad1 BE1 Ca1 b1-6-opt-search-icn bf-opt-search-icn\"\n                aria-hidden=\"true\"\n                width=\"22\"\n                height=\"22\"\n                viewbox=\"0 0 24 24\"\n                fill=\"none\"\n                stroke=\"currentColor\"\n                stroke-width=\"2\"\n                stroke-linecap=\"round\"\n                stroke-linejoin=\"round\"\n              >\n                <circle cx=\"11\" cy=\"11\" r=\"8\" \/>\n                <line x1=\"21\" y1=\"21\" x2=\"16.65\" y2=\"16.65\" \/>\n              <\/svg>\n                    <button\n        \n        type=\"button\"\n        aria-label=\"Pesquisa clara\"\n        class=\"D1 AF1 AQ1 AT1 AU1 AV1 AW1 AX1 AY1 AZ1 Aa1 Ab1 Ac1 Ad1 Ae1 Af1 Ag1 Bn1 Bo1 Cb1 Cc1 DF1 DG1 b1-6-search-clear-btn bf-search-clear-btn\"\n        tabindex=\"-1\"\n      >\n        <svg\n          width=\"12\"\n          height=\"12\"\n          viewbox=\"0 0 24 24\"\n          fill=\"none\"\n          stroke=\"currentColor\"\n          stroke-width=\"2\"\n          stroke-linecap=\"round\"\n          stroke-linejoin=\"round\"\n        >\n          <line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\" \/>\n          <line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\" \/>\n        <\/svg>\n      <\/button>\n            <\/div>\n            <ul\n              \n              class=\"Aj1 Ak1 BN1 BO1 BP1 BQ1 BR1 BS1 BT1 BU1 BV1 BW1 BX1 BY1 BZ1 Ba1 Cn1 Co1 Cp1 Cq1 Cr1 Cs1 Ct1 Cu1 Cv1 Cw1 b1-6-option-list bf-option-list\"\n              tabindex=\"-1\"\n              role=\"listbox\"\n              aria-label=\"lista de pa\u00edses\"\n            >\n              \n            <\/ul>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n        \n            <div class='S1 T1 U1 b1-6-err-wrp bf-err-wrp' style=\"opacity: 0 !important; height: 0px !important;\">\n    <div class='Q1 b1-6-err-inner bf-err-inner'>\n      \n        \n        <div   class=\"A1 E1 Y1 Z1 a1 b1 c1 d1 e1 f1 g1 h1 b1-6-err-msg bf-err-msg  R1 b1-6-err-txt bf-err-txt\" style='display: none !important;'><\/div>\n        \n      \n      <\/div>\n    <\/div>\n      <\/div>\n    <\/div>\n<\/div><div class=\"btcd-fld-itm b1-3\">\n        <div \n      \n      class=\"R1 V1 W1 X1 b1-3-fld-wrp bf-fld-wrp\"\n    >\n            <div \n        \n        class=\"L1 AG1 AK1 b1-3-lbl-wrp bf-lbl-wrp\" \n      >\n              <label \n         \n        class=\"A1 E1 L1 AG1 AH1 AI1 AJ1 Ca1 b1-3-lbl bf-lbl\"\n        for=\"b1-3-1\">\n        \n        \n        Mensagem\n        \n              <span \n        \n        class=\"AL1 AM1 b1-3-req-smbl bf-req-smbl\" \n      >\n        *\n      <\/span>\n      <\/label>\n        \n      <\/div>\n      <div \n        \n        class=\"b1-3-inp-wrp bf-inp-wrp\"\n      > \n            <div \n      \n      class=\"X1 AF1 b1-3-inp-fld-wrp bf-inp-fld-wrp\"\n    >\n      <textarea\n        \n        id=\"b1-3-1\"\n        class=\"B1 F1 G1 i1 j1 k1 l1 m1 o1 p1 r1 s1 t1 u1 v1 w1 x1 y1 z1 AA1 AB1 AC1 AD1 AE1 AN1 AO1 AP1 CQ1 CR1 CS1 CT1 CU1 CV1 CW1 CX1 CY1 CZ1 b1-3-fld bf-fld\"\n        required\n placeholder='Escreva a sua mensagem...'\n        \n        name='textarea-b1-3'\n      ><\/textarea>\n      \n      \n    <\/div>\n        \n            <div class='S1 T1 U1 b1-3-err-wrp bf-err-wrp' style=\"opacity: 0 !important; height: 0px !important;\">\n    <div class='Q1 b1-3-err-inner bf-err-inner'>\n      \n        \n        <div   class=\"A1 E1 Y1 Z1 a1 b1 c1 d1 e1 f1 g1 h1 b1-3-err-msg bf-err-msg  R1 b1-3-err-txt bf-err-txt\" style='display: none !important;'><\/div>\n        \n      \n      <\/div>\n    <\/div>\n      <\/div>\n    <\/div>\n<\/div><div class=\"btcd-fld-itm b1-7\">\n        <div \n      \n      class=\"R1 V1 W1 X1 CB1 CC1 b1-7-fld-wrp bf-fld-wrp\"\n    >\n            <div \n        \n        class=\"L1 AG1 AK1 b1-7-lbl-wrp bf-lbl-wrp\" \n      >\n              <label \n         \n        class=\"A1 E1 L1 AG1 AH1 AI1 AJ1 Ca1 b1-7-lbl bf-lbl\"\n        for=\"b1-7-1\">\n        \n        \n        File Upload\n        \n        \n      <\/label>\n        \n      <\/div>\n      <div \n        \n        class=\"b1-7-inp-wrp bf-inp-wrp\"\n      > \n            <div \n      \n      class=\"b1-7-file-up-container bf-file-up-container\"\n    >\n      <div\n        \n        class=\"b1-7-file-up-wrpr bf-file-up-wrpr\"\n      >\n        <div\n          \n          class=\"Bq1 Br1 Bs1 Bt1 Bu1 Bv1 Bw1 Bx1 By1 DI1 DJ1 DK1 DL1 DM1 DN1 b1-7-file-input-wrpr bf-file-input-wrpr\"\n        >\n          <div\n            \n            class=\"A1 E1 X1 Ao1 b1-7-btn-wrpr bf-btn-wrpr\"\n          >\n            <button\n              \n              type=\"button\"\n              class=\"A1 B1 C1 D1 G1 I1 K1 M1 N1 O1 P1 AU1 Ah1 Ao1 CD1 CP1 DO1 b1-7-inp-btn bf-inp-btn\"\n            >\n             <img decoding=\"async\"\n  \n  class=\"AR1 Aq1 Ar1 b1-7-pre-i bf-pre-i lazyload\"\n  data-src=\"https:\/\/wellspcba.com\/wp-content\/plugins\/bit-form\/assets\/..\/static\/file-upload\/paperclip.svg\"\n  alt=\"\"\n src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" \/>\n              <span\n                \n                class=\"b1-7-btn-txt bf-btn-txt\"\n              >\n                Attach File\n              <\/span>\n              \n            <\/button>\n                  <div\n        \n        class=\"AH1 Bz1 Ca1 b1-7-file-select-status bf-file-select-status\"\n      >\n        No Choosen File\n      <\/div>\n                  <small\n        \n        class=\"CE1 DP1 b1-7-max-size-lbl bf-max-size-lbl\"\n      >\n      (Max 1024 MB)\n      <\/small>\n            <input\n              \n              type=\"file\"\n              class=\"D1 L1 R1 AU1 Aa1 Aj1 Ap1 CA1 b1-7-file-upload-input bf-file-upload-input\"\n              id=\"b1-7-1\"\n              name='file-up-1-7[]'\n              \n              \n              \n              aria-disabled=\"true\"\n              tabindex=\"-1\"\n            \/>\n          <\/div>\n          <div \n            \n            class=\"err-wrp\"\n          ><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n        \n            <div class='S1 T1 U1 b1-7-err-wrp bf-err-wrp' style=\"opacity: 0 !important; height: 0px !important;\">\n    <div class='Q1 b1-7-err-inner bf-err-inner'>\n      \n        \n        <div   class=\"A1 E1 Y1 Z1 a1 b1 c1 d1 e1 f1 g1 h1 b1-7-err-msg bf-err-msg  R1 b1-7-err-txt bf-err-txt\" style='display: none !important;'><\/div>\n        \n      \n      <\/div>\n    <\/div>\n      <\/div>\n    <\/div>\n<\/div><div class=\"btcd-fld-itm b1-1\">\n        <div \n      \n      class=\"R1 V1 W1 X1 b1-1-fld-wrp bf-fld-wrp\"\n    >\n      \n      <div \n        \n        class=\"b1-1-inp-wrp bf-inp-wrp\"\n      > \n              <div \n        \n        class=\"E1 b1-1-inp-fld-wrp bf-inp-fld-wrp\"\n      >\n        <button\n          \n          class=\"A1 B1 C1 D1 E1 F1 G1 H1 I1 J1 K1 L1 M1 N1 O1 P1 Av1 Aw1 Ax1 Ay1 CP1 Ce1 Cf1 b1-1-btn bf-btn\"\n          type=\"submit\"\n          name='button-b1-1'\n          \n        >\n          \n          Enviar\n          \n          <span class=\"bf-spinner d-none\"><\/span>\n        <\/button>\n      <\/div>\n        \n        \n      <\/div>\n    <\/div>\n<\/div>\n          <input type=\"hidden\" name=\"trp-form-language\" value=\"pt\"\/><\/form>\n          \n          <div id='bf-form-msg-wrp-bitforms_1_1676_1'><\/div>\n                      <div role=\"dialog\" aria-hidden=\"true\" data-modal-backdrop=\"true\" class=\"A1 E1 H1 Ap1 CL1 CM1 CN1 msg-container-1 deactive scroll\">\n              <div data-contentid=\"bitforms_1_1676_1\" data-msgid=\"1\" role=\"button\" class=\"A1 E1 H1 L1 Aj1 CK1 msg-background-1 msg-backdrop\">\n                <div class=\"bf-msg-content L1 X1 b1 c1 AH1 Al1 CO1 Ca1 msg-content-1\">\n                  <button data-contentid=\"bitforms_1_1676_1\" data-msgid=\"1\" class=\"D1 S1 V1 AQ1 AU1 Aa1 Ac1 Ad1 Ak1 An1 CG1 CH1 CI1 DQ1 DR1 DS1 close-1 bf-msg-close\" type=\"button\">\n                    <svg class=\"AR1 Ar1 CJ1 close-icn-1\" viewbox=\"0 0 30 30\">\n                      <line fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" x1=\"4\" y1=\"3.88\" x2=\"26\" y2=\"26.12\"><\/line>\n                      <line fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" x1=\"26\" y1=\"3.88\" x2=\"4\" y2=\"26.12\"><\/line>\n                    <\/svg>\n                  <\/button>\n                  <div class=\"msg-content\"><\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n      <\/div>    <script id=\"bit-form-bf-globals-bitforms_1_1676_1\">      if(!window.bf_globals) { \n        window.bf_globals = {} \n      } if(!window.bf_globals.bitforms_1_1676_1) { \n        window.bf_globals.bitforms_1_1676_1 = {} \n      }\n      if(document.getElementById('bitforms_1_1676_1')) {\n        window.bf_globals.bitforms_1_1676_1 = { \n          ...window.bf_globals.bitforms_1_1676_1, \n          ...{\"ajaxURL\":\"https:\\\/\\\/wellspcba.com\\\/wp-admin\\\/admin-ajax.php\",\"nonce\":\"c6792dff77\",\"version\":\"2.20.6\",\"layout\":{\"lg\":[{\"w\":60,\"h\":80,\"x\":0,\"y\":0,\"i\":\"b1-2\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":80,\"x\":0,\"y\":80,\"i\":\"b1-5\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":101,\"x\":0,\"y\":160,\"i\":\"b1-8\",\"minW\":9,\"moved\":false,\"static\":false,\"resizeHandles\":[\"se\",\"e\"]},{\"w\":60,\"h\":80,\"x\":0,\"y\":261,\"i\":\"b1-6\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":101,\"x\":0,\"y\":341,\"i\":\"b1-3\",\"minW\":9,\"moved\":false,\"static\":false},{\"w\":60,\"h\":81,\"x\":0,\"y\":442,\"i\":\"b1-7\",\"minW\":20,\"moved\":false,\"static\":false},{\"w\":60,\"h\":54,\"x\":0,\"y\":523,\"i\":\"b1-1\",\"moved\":false,\"static\":false}],\"md\":[{\"w\":60,\"h\":80,\"x\":0,\"y\":0,\"i\":\"b1-2\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":80,\"x\":0,\"y\":80,\"i\":\"b1-5\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":101,\"x\":0,\"y\":160,\"i\":\"b1-8\",\"minW\":9,\"moved\":false,\"static\":false,\"resizeHandles\":[\"se\",\"e\"]},{\"w\":60,\"h\":80,\"x\":0,\"y\":261,\"i\":\"b1-6\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":101,\"x\":0,\"y\":341,\"i\":\"b1-3\",\"minW\":9,\"moved\":false,\"static\":false},{\"w\":60,\"h\":81,\"x\":0,\"y\":442,\"i\":\"b1-7\",\"minW\":20,\"moved\":false,\"static\":false},{\"w\":60,\"h\":54,\"x\":0,\"y\":523,\"i\":\"b1-1\",\"moved\":false,\"static\":false}],\"sm\":[{\"w\":60,\"h\":80,\"x\":0,\"y\":0,\"i\":\"b1-2\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":80,\"x\":0,\"y\":80,\"i\":\"b1-5\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":101,\"x\":0,\"y\":160,\"i\":\"b1-8\",\"minW\":9,\"moved\":false,\"static\":false,\"resizeHandles\":[\"se\",\"e\"]},{\"w\":60,\"h\":80,\"x\":0,\"y\":261,\"i\":\"b1-6\",\"moved\":false,\"static\":false},{\"w\":60,\"h\":101,\"x\":0,\"y\":341,\"i\":\"b1-3\",\"minW\":9,\"moved\":false,\"static\":false},{\"w\":60,\"h\":81,\"x\":0,\"y\":442,\"i\":\"b1-7\",\"minW\":20,\"moved\":false,\"static\":false},{\"w\":60,\"h\":54,\"x\":0,\"y\":523,\"i\":\"b1-1\",\"moved\":false,\"static\":false}]},\"nestedLayout\":{},\"fields\":{\"b1-1\":{\"typ\":\"button\",\"btnSiz\":\"md\",\"btnTyp\":\"submit\",\"txt\":\"Submit\",\"icn\":{\"pos\":\"\",\"url\":\"\"},\"valid\":{},\"customClasses\":{},\"customAttributes\":{},\"fulW\":true,\"fieldName\":\"button-b1-1\"},\"b1-2\":{\"typ\":\"text\",\"lbl\":\"Name\",\"phHide\":true,\"valid\":{\"req\":true,\"reqPos\":\"after\",\"reqShow\":true},\"err\":{\"req\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u6b64\\u5b57\\u6bb5\\u4e3a\\u5fc5\\u586b\\u9879<\\\/p>\",\"show\":true}},\"customClasses\":{},\"customAttributes\":{},\"fieldName\":\"text-b1-2\",\"acHide\":true,\"ac\":\"name\",\"ph\":\"John Doe\"},\"b1-3\":{\"typ\":\"textarea\",\"lbl\":\"Message\",\"phHide\":true,\"valid\":{\"req\":true,\"reqPos\":\"after\",\"reqShow\":true},\"err\":{\"req\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u6b64\\u5b57\\u6bb5\\u4e3a\\u5fc5\\u586b\\u9879<\\\/p>\",\"show\":true,\"custom\":true,\"msg\":\"<p style=\\\"margin:0\\\">Message can not be empty.<\\\/p>\"}},\"customClasses\":{},\"customAttributes\":{},\"fieldName\":\"textarea-b1-3\",\"ph\":\"Write your message...\"},\"b1-5\":{\"typ\":\"email\",\"lbl\":\"Email\",\"ph\":\"example@mail.com\",\"phHide\":true,\"pattern\":\"^[^$_bf_$s@]+@[^$_bf_$s@]+$_bf_$.[^$_bf_$s@]+$\",\"valid\":{\"req\":true,\"reqPos\":\"after\",\"reqShow\":true},\"err\":{\"invalid\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u8bf7\\u8f93\\u5165\\u6709\\u6548\\u7684\\u7535\\u5b50\\u90ae\\u4ef6\\u5730\\u5740<\\\/p>\",\"show\":true},\"req\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u6b64\\u5b57\\u6bb5\\u4e3a\\u5fc5\\u586b\\u9879<\\\/p>\",\"show\":true,\"custom\":true,\"msg\":\"<p style=\\\"margin:0\\\">Please enter your email.<\\\/p>\"}},\"customClasses\":{},\"customAttributes\":{},\"fieldName\":\"email-b1-5\",\"acHide\":true,\"ac\":\"email\"},\"b1-6\":{\"typ\":\"phone-number\",\"lbl\":\"Phone Number\",\"ph\":\"Phone Number\",\"phHide\":true,\"config\":{\"selectedFlagImage\":false,\"selectedCountryClearable\":true,\"searchClearable\":true,\"optionFlagImage\":false,\"defaultCountryKey\":\"\",\"showSearchPh\":true,\"searchPlaceholder\":\"Search for countries\",\"noCountryFoundText\":\"No Country Found\",\"inputFormat\":\"+c #### ### ###\",\"valueFormat\":\"+c #### ### ###\"},\"options\":[{\"i\":\"US\",\"lbl\":\"United States of America (the)\",\"img\":\"us.png\",\"code\":\"+1\",\"ex\":\"2015550123\",\"ptrn\":\"5056(?:[0-35-9]$_bf_$d|4[46])$_bf_$d{4}|(?:4722|505[2-57-9])$_bf_$d{6}|(?:2(?:0[1-35-9]|1[02-9]|2[03-589]|3[149]|4[08]|5[1-46]|6[0279]|7[0269]|8[13])|3(?:0[1-57-9]|1[02-9]|2[01356]|3[0-24679]|4[167]|5[0-2]|6[014]|8[056])|4(?:0[124-9]|1[02-579]|2[3-5]|3[0245]|4[023578]|58|6[349]|7[0589]|8[04])|5(?:0[1-47-9]|1[0235-8]|20|3[0149]|4[01]|5[179]|6[1-47]|7[0-5]|8[0256])|6(?:0[1-35-9]|1[024-9]|2[03689]|[34][016]|5[01679]|6[0-279]|78|8[0-29])|7(?:0[1-46-8]|1[2-9]|2[04-7]|3[1247]|4[037]|5[47]|6[02359]|7[0-59]|8[156])|8(?:0[1-68]|1[02-8]|2[068]|3[0-2589]|4[03578]|5[046-9]|6[02-5]|7[028])|9(?:0[1346-9]|1[02-9]|2[0589]|3[0146-8]|4[01357-9]|5[12469]|7[0-389]|8[04-69]))[2-9]$_bf_$d{6}\"},{\"i\":\"CA\",\"lbl\":\"Canada\",\"img\":\"ca.png\",\"code\":\"+1\",\"ex\":\"5062345678\",\"ptrn\":\"(?:2(?:04|[23]6|[48]9|50|63)|3(?:06|43|54|6[578]|82)|4(?:03|1[68]|[26]8|3[178]|50|74)|5(?:06|1[49]|48|79|8[147])|6(?:04|[18]3|39|47|72)|7(?:0[59]|42|53|78|8[02])|8(?:[06]7|19|25|73)|90[25])[2-9]$_bf_$d{6}\"},{\"i\":\"AG\",\"lbl\":\"Antigua and Barbuda\",\"img\":\"ag.png\",\"code\":\"+1\",\"ex\":\"2684641234\",\"ptrn\":\"268(?:464|7(?:1[3-9]|[28]$_bf_$d|3[0246]|64|7[0-689]))$_bf_$d{4}\"},{\"i\":\"AI\",\"lbl\":\"Anguilla\",\"img\":\"ai.png\",\"code\":\"+1\",\"ex\":\"2642351234\",\"ptrn\":\"264(?:235|4(?:69|76)|5(?:3[6-9]|8[1-4])|7(?:29|72))$_bf_$d{4}\"},{\"i\":\"AS\",\"lbl\":\"American Samoa\",\"img\":\"as.png\",\"code\":\"+1\",\"ex\":\"6847331234\",\"ptrn\":\"684(?:2(?:48|5[2468]|72)|7(?:3[13]|70|82))$_bf_$d{4}\"},{\"i\":\"BB\",\"lbl\":\"Barbados\",\"img\":\"bb.png\",\"code\":\"+1\",\"ex\":\"2462501234\",\"ptrn\":\"246(?:2(?:[3568]$_bf_$d|4[0-57-9])|45$_bf_$d|69[5-7]|8(?:[2-5]$_bf_$d|83))$_bf_$d{4}\"},{\"i\":\"BM\",\"lbl\":\"Bermuda\",\"img\":\"bm.png\",\"code\":\"+1\",\"ex\":\"4413701234\",\"ptrn\":\"441(?:[2378]$_bf_$d|5[0-39])$_bf_$d{5}\"},{\"i\":\"BS\",\"lbl\":\"Bahamas (the)\",\"img\":\"bs.png\",\"code\":\"+1\",\"ex\":\"2423591234\",\"ptrn\":\"242(?:3(?:5[79]|7[56]|95)|4(?:[23][1-9]|4[1-35-9]|5[1-8]|6[2-8]|7$_bf_$d|81)|5(?:2[45]|3[35]|44|5[1-46-9]|65|77)|6[34]6|7(?:27|38)|8(?:0[1-9]|1[02-9]|2$_bf_$d|[89]9))$_bf_$d{4}\"},{\"i\":\"DM\",\"lbl\":\"Dominica\",\"img\":\"dm.png\",\"code\":\"+1\",\"ex\":\"7672251234\",\"ptrn\":\"767(?:2(?:[2-4689]5|7[5-7])|31[5-7]|61[1-8]|70[1-6])$_bf_$d{4}\"},{\"i\":\"DO\",\"lbl\":\"Dominican Republic (the)\",\"img\":\"do.png\",\"code\":\"+1\",\"ex\":\"8092345678\",\"ptrn\":\"8[024]9[2-9]$_bf_$d{6}\"},{\"i\":\"GD\",\"lbl\":\"Grenada\",\"img\":\"gd.png\",\"code\":\"+1\",\"ex\":\"4734031234\",\"ptrn\":\"473(?:4(?:0[2-79]|1[04-9]|2[0-5]|58)|5(?:2[01]|3[3-8])|901)$_bf_$d{4}\"},{\"i\":\"GU\",\"lbl\":\"Guam\",\"img\":\"gu.png\",\"code\":\"+1\",\"ex\":\"6713001234\",\"ptrn\":\"671(?:3(?:00|3[39]|4[349]|55|6[26])|4(?:00|56|7[1-9]|8[02-46-9])|5(?:55|6[2-5]|88)|6(?:3[2-578]|4[24-9]|5[34]|78|8[235-9])|7(?:[0479]7|2[0167]|3[45]|8[7-9])|8(?:[2-57-9]8|6[48])|9(?:2[29]|6[79]|7[1279]|8[7-9]|9[78]))$_bf_$d{4}\"},{\"i\":\"JM\",\"lbl\":\"Jamaica\",\"img\":\"jm.png\",\"code\":\"+1\",\"ex\":\"8762101234\",\"ptrn\":\"(?:658295|876(?:2(?:0[6-9]|[14-9]$_bf_$d|2[013-9]|3[7-9])|[348]$_bf_$d$_bf_$d|5(?:0[1-9]|[1-9]$_bf_$d)|6(?:4[89]|6[67])|7(?:0[07]|7$_bf_$d|8[1-47-9]|9[0-36-9])|9(?:[01]9|9[0579])))$_bf_$d{4}\"},{\"i\":\"KN\",\"lbl\":\"Saint Kitts and Nevis\",\"img\":\"kn.png\",\"code\":\"+1\",\"ex\":\"8697652917\",\"ptrn\":\"869(?:48[89]|55[6-8]|66$_bf_$d|76[02-7])$_bf_$d{4}\"},{\"i\":\"KY\",\"lbl\":\"Cayman Islands (the)\",\"img\":\"ky.png\",\"code\":\"+1\",\"ex\":\"3453231234\",\"ptrn\":\"345(?:32[1-9]|42[0-4]|5(?:1[67]|2[5-79]|4[6-9]|50|76)|649|9(?:1[679]|2[2-9]|3[06-9]|90))$_bf_$d{4}\"},{\"i\":\"LC\",\"lbl\":\"Saint Lucia\",\"img\":\"lc.png\",\"code\":\"+1\",\"ex\":\"7582845678\",\"ptrn\":\"758(?:28[4-7]|384|4(?:6[01]|8[4-9])|5(?:1[89]|20|84)|7(?:1[2-9]|2$_bf_$d|3[0-3])|812)$_bf_$d{4}\"},{\"i\":\"MP\",\"lbl\":\"Northern Mariana Islands (the)\",\"img\":\"mp.png\",\"code\":\"+1\",\"ex\":\"6702345678\",\"ptrn\":\"670(?:2(?:3[3-7]|56|8[4-8])|32[1-38]|4(?:33|8[348])|5(?:32|55|88)|6(?:64|70|82)|78[3589]|8[3-9]8|989)$_bf_$d{4}\"},{\"i\":\"MS\",\"lbl\":\"Montserrat\",\"img\":\"ms.png\",\"code\":\"+1\",\"ex\":\"6644923456\",\"ptrn\":\"664(?:3(?:49|9[1-6])|49[2-6])$_bf_$d{4}\"},{\"i\":\"PR\",\"lbl\":\"Puerto Rico\",\"img\":\"pr.png\",\"code\":\"+1\",\"ex\":\"7872345678\",\"ptrn\":\"(?:787|939)[2-9]$_bf_$d{6}\"},{\"i\":\"SX\",\"lbl\":\"Sint Maarten (Dutch part)\",\"img\":\"sx.png\",\"code\":\"+1\",\"ex\":\"7215205678\",\"ptrn\":\"7215(?:1[02]|2$_bf_$d|5[034679]|8[014-8])$_bf_$d{4}\"},{\"i\":\"TC\",\"lbl\":\"Turks and Caicos Islands (the)\",\"img\":\"tc.png\",\"code\":\"+1\",\"ex\":\"6492311234\",\"ptrn\":\"649(?:2(?:3[129]|4[1-79])|3$_bf_$d$_bf_$d|4[34][1-3])$_bf_$d{4}\"},{\"i\":\"TT\",\"lbl\":\"Trinidad and Tobago\",\"img\":\"tt.png\",\"code\":\"+1\",\"ex\":\"8682911234\",\"ptrn\":\"868(?:(?:2[5-9]|3$_bf_$d)$_bf_$d|4(?:3[0-6]|[6-9]$_bf_$d)|6(?:20|78|8$_bf_$d)|7(?:0[1-9]|1[02-9]|[2-9]$_bf_$d))$_bf_$d{4}\"},{\"i\":\"VC\",\"lbl\":\"Saint Vincent and the Grenadines\",\"img\":\"vc.png\",\"code\":\"+1\",\"ex\":\"7844301234\",\"ptrn\":\"784(?:4(?:3[0-5]|5[45]|89|9[0-8])|5(?:2[6-9]|3[0-4])|720)$_bf_$d{4}\"},{\"i\":\"VG\",\"lbl\":\"Virgin Islands (British)\",\"img\":\"vg.png\",\"code\":\"+1\",\"ex\":\"2843001234\",\"ptrn\":\"284496[6-9]$_bf_$d{3}|284(?:245|3(?:0[0-3]|4[0-7]|68|9[34])|4(?:4[0-6]|68|99)|5(?:4[0-7]|68|9[69]))$_bf_$d{4}\"},{\"i\":\"VI\",\"lbl\":\"Virgin Islands (U.S.)\",\"img\":\"vi.png\",\"code\":\"+1\",\"ex\":\"3406421234\",\"ptrn\":\"340(?:2(?:0[0-368]|2[06-8]|4[49]|77)|3(?:32|44)|4(?:2[23]|44|7[34]|89)|5(?:1[34]|55)|6(?:2[56]|4[23]|77|9[023])|7(?:1[2-57-9]|2[57]|7$_bf_$d)|884|998)$_bf_$d{4}\"},{\"i\":\"AD\",\"lbl\":\"Andorra\",\"img\":\"ad.png\",\"code\":\"+376\",\"ex\":\"312345\",\"frmt\":\"+c ## ### ### ##\",\"ptrn\":\"690$_bf_$d{6}|[356]$_bf_$d{5}\"},{\"i\":\"AE\",\"lbl\":\"United Arab Emirates (the)\",\"img\":\"ae.png\",\"code\":\"+971\",\"ex\":\"501234567\",\"ptrn\":\"5[024-68]$_bf_$d{7}\"},{\"i\":\"AF\",\"lbl\":\"Afghanistan\",\"img\":\"af.png\",\"code\":\"+93\",\"ex\":\"701234567\",\"ptrn\":\"7$_bf_$d{8}\"},{\"i\":\"AL\",\"lbl\":\"Albania\",\"img\":\"al.png\",\"code\":\"+355\",\"ex\":\"672123456\",\"ptrn\":\"6(?:[78][2-9]|9$_bf_$d)$_bf_$d{6}\"},{\"i\":\"AM\",\"lbl\":\"Armenia\",\"img\":\"am.png\",\"code\":\"+374\",\"ex\":\"77123456\",\"ptrn\":\"(?:33|4[1349]|55|77|88|9[13-9])$_bf_$d{6}\"},{\"i\":\"AO\",\"lbl\":\"Angola\",\"img\":\"ao.png\",\"code\":\"+244\",\"ex\":\"923123456\",\"ptrn\":\"9[1-49]$_bf_$d{7}\"},{\"i\":\"AR\",\"lbl\":\"Argentina\",\"img\":\"ar.png\",\"code\":\"+54\",\"ex\":\"91123456789\",\"ptrn\":\"93888[013-9]$_bf_$d{5}|9(?:29(?:54|66)|3(?:777|865))[2-8]$_bf_$d{5}|93(?:7(?:1[15]|81)|8(?:21|4[16]|69|9[12]))[46]$_bf_$d{5}|9(?:2(?:2(?:2[59]|44|52)|3(?:26|44)|473|9(?:[07]2|2[26]|34|46))|3327)[45]$_bf_$d{5}|9(?:2(?:284|302|657|920)|3(?:4(?:8[27]|92)|541|755|878))[2-7]$_bf_$d{5}|9(?:2(?:(?:26|62)2|32[03]|477|9(?:42|83))|3(?:329|4(?:[47]6|62|89)|564))[2-6]$_bf_$d{5}|(?:675$_bf_$d|9(?:11[1-8]$_bf_$d|2(?:2(?:0[45]|1[2-6]|3[3-6])|3(?:[06]4|7[45])|494|6(?:04|1[2-8]|[36][45]|4[3-6])|80[45]|9(?:[17][4-6]|[48][45]|9[3-6]))|3(?:364|4(?:1[2-7]|[235][4-6]|84)|5(?:1[2-8]|[38][4-6])|6(?:2[45]|44)|7[069][45]|8(?:[03][45]|[17][2-6]|[58][3-6]))))$_bf_$d{6}|92(?:2(?:21|4[23]|6[145]|7[1-4]|8[356]|9[267])|3(?:16|3[13-8]|43|5[346-8]|9[3-5])|475|6(?:2[46]|4[78]|5[1568])|9(?:03|2[1457-9]|3[1356]|4[08]|[56][23]|82))4$_bf_$d{5}|9(?:2(?:2(?:57|81)|3(?:24|46|92)|9(?:01|23|64))|3(?:4(?:42|71)|5(?:25|37|4[347]|71)|7(?:18|5[17])))[3-6]$_bf_$d{5}|9(?:2(?:2(?:02|2[3467]|4[156]|5[45]|6[6-8]|91)|3(?:1[47]|25|[45][25]|96)|47[48]|625|932)|3(?:38[2578]|4(?:0[0-24-9]|3[78]|4[457]|58|6[03-9]|72|83|9[136-8])|5(?:2[124]|[368][23]|4[2689]|7[2-6])|7(?:16|2[15]|3[145]|4[13]|5[468]|7[2-5]|8[26])|8(?:2[5-7]|3[278]|4[3-5]|5[78]|6[1-378]|[78]7|94)))[4-6]$_bf_$d{5}\"},{\"i\":\"AT\",\"lbl\":\"Austria\",\"img\":\"at.png\",\"code\":\"+43\",\"ex\":\"664123456\",\"ptrn\":\"6(?:5[0-3579]|6[013-9]|[7-9]$_bf_$d)$_bf_$d{4,10}\"},{\"i\":\"AU\",\"lbl\":\"Australia\",\"img\":\"au.png\",\"code\":\"+61\",\"ex\":\"412345678\",\"ptrn\":\"4(?:83[0-38]|93[0-6])$_bf_$d{5}|4(?:[0-3]$_bf_$d|4[047-9]|5[0-25-9]|6[06-9]|7[02-9]|8[0-24-9]|9[0-27-9])$_bf_$d{6}\"},{\"i\":\"CC\",\"lbl\":\"Cocos (Keeling) Islands (the)\",\"img\":\"cc.png\",\"code\":\"+61\",\"ex\":\"412345678\",\"ptrn\":\"4(?:83[0-38]|93[0-6])$_bf_$d{5}|4(?:[0-3]$_bf_$d|4[047-9]|5[0-25-9]|6[06-9]|7[02-9]|8[0-24-9]|9[0-27-9])$_bf_$d{6}\"},{\"i\":\"CX\",\"lbl\":\"Christmas Island\",\"img\":\"cx.png\",\"code\":\"+61\",\"ex\":\"412345678\",\"ptrn\":\"4(?:83[0-38]|93[0-6])$_bf_$d{5}|4(?:[0-3]$_bf_$d|4[047-9]|5[0-25-9]|6[06-9]|7[02-9]|8[0-24-9]|9[0-27-9])$_bf_$d{6}\"},{\"i\":\"AW\",\"lbl\":\"Aruba\",\"img\":\"aw.png\",\"code\":\"+297\",\"ex\":\"5601234\",\"ptrn\":\"(?:290|5[69]$_bf_$d|6(?:[03]0|22|4[0-2]|[69]$_bf_$d)|7(?:[34]$_bf_$d|7[07])|9(?:6[45]|9[4-8]))$_bf_$d{4}\"},{\"i\":\"AX\",\"lbl\":\"\\u00c5land Islands\",\"img\":\"ax.png\",\"code\":\"+358\",\"ex\":\"412345678\",\"ptrn\":\"4946$_bf_$d{2,6}|(?:4[0-8]|50)$_bf_$d{4,8}\"},{\"i\":\"FI\",\"lbl\":\"Finland\",\"img\":\"fi.png\",\"code\":\"+358\",\"ex\":\"412345678\",\"ptrn\":\"4946$_bf_$d{2,6}|(?:4[0-8]|50)$_bf_$d{4,8}\"},{\"i\":\"AZ\",\"lbl\":\"Azerbaijan\",\"img\":\"az.png\",\"code\":\"+994\",\"ex\":\"401234567\",\"ptrn\":\"36554$_bf_$d{4}|(?:[16]0|4[04]|5[015]|7[07]|99)$_bf_$d{7}\"},{\"i\":\"BA\",\"lbl\":\"Bosnia and Herzegovina\",\"img\":\"ba.png\",\"code\":\"+387\",\"ex\":\"61123456\",\"ptrn\":\"6040$_bf_$d{5}|6(?:03|[1-356]|44|7$_bf_$d)$_bf_$d{6}\"},{\"i\":\"BD\",\"lbl\":\"Bangladesh\",\"img\":\"bd.png\",\"code\":\"+880\",\"ex\":\"1812345678\",\"ptrn\":\"(?:1[13-9]$_bf_$d|644)$_bf_$d{7}|(?:3[78]|44|66)[02-9]$_bf_$d{7}\"},{\"i\":\"BE\",\"lbl\":\"Belgium\",\"img\":\"be.png\",\"code\":\"+32\",\"ex\":\"470123456\",\"ptrn\":\"4[5-9]$_bf_$d{7}\"},{\"i\":\"BF\",\"lbl\":\"Burkina Faso\",\"img\":\"bf.png\",\"code\":\"+226\",\"ex\":\"70123456\",\"ptrn\":\"(?:0[1267]|5[1-8]|[67]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"BG\",\"lbl\":\"Bulgaria\",\"img\":\"bg.png\",\"code\":\"+359\",\"ex\":\"48123456\",\"ptrn\":\"43[07-9]$_bf_$d{5}|(?:48|8[7-9]$_bf_$d|9(?:8$_bf_$d|9[69]))$_bf_$d{6}\"},{\"i\":\"BH\",\"lbl\":\"Bahrain\",\"img\":\"bh.png\",\"code\":\"+973\",\"ex\":\"36001234\",\"ptrn\":\"(?:3(?:[1-79]$_bf_$d|8[0-47-9])$_bf_$d|6(?:3(?:00|33|6[16])|6(?:3[03-9]|[69]$_bf_$d|7[0-6])))$_bf_$d{4}\"},{\"i\":\"BI\",\"lbl\":\"Burundi\",\"img\":\"bi.png\",\"code\":\"+257\",\"ex\":\"79561234\",\"ptrn\":\"(?:29|31|6[1289]|7[125-9])$_bf_$d{6}\"},{\"i\":\"BJ\",\"lbl\":\"Benin\",\"img\":\"bj.png\",\"code\":\"+229\",\"ex\":\"90011234\",\"ptrn\":\"(?:5[1-35-8]|6$_bf_$d|9[013-9])$_bf_$d{6}\"},{\"i\":\"BL\",\"lbl\":\"Saint Barth\\u00e9lemy\",\"img\":\"bl.png\",\"code\":\"+590\",\"ex\":\"690001234\",\"ptrn\":\"69(?:0$_bf_$d$_bf_$d|1(?:2[2-9]|3[0-5]))$_bf_$d{4}\"},{\"i\":\"GP\",\"lbl\":\"Guadeloupe\",\"img\":\"gp.png\",\"code\":\"+590\",\"ex\":\"690001234\",\"ptrn\":\"69(?:0$_bf_$d$_bf_$d|1(?:2[2-9]|3[0-5]))$_bf_$d{4}\"},{\"i\":\"MF\",\"lbl\":\"Saint Martin (French part)\",\"img\":\"mf.png\",\"code\":\"+590\",\"ex\":\"690001234\",\"ptrn\":\"69(?:0$_bf_$d$_bf_$d|1(?:2[2-9]|3[0-5]))$_bf_$d{4}\"},{\"i\":\"BN\",\"lbl\":\"Brunei Darussalam\",\"img\":\"bn.png\",\"code\":\"+673\",\"ex\":\"7123456\",\"ptrn\":\"(?:22[89]|[78]$_bf_$d$_bf_$d)$_bf_$d{4}\"},{\"i\":\"BO\",\"lbl\":\"Bolivia (Plurinational State of)\",\"img\":\"bo.png\",\"code\":\"+591\",\"ex\":\"71234567\",\"ptrn\":\"[67]$_bf_$d{7}\"},{\"i\":\"BQ\",\"lbl\":\"Bonaire, Sint Eustatius and Saba\",\"img\":\"bq.png\",\"code\":\"+599\",\"ex\":\"3181234\",\"ptrn\":\"(?:31(?:8[14-8]|9[14578])|416[14-9]|7(?:0[01]|7[07]|8$_bf_$d|9[056])$_bf_$d)$_bf_$d{3}\"},{\"i\":\"CW\",\"lbl\":\"Cura\\u00e7ao\",\"img\":\"cw.png\",\"code\":\"+599\",\"ex\":\"95181234\",\"ptrn\":\"953[01]$_bf_$d{4}|9(?:5[12467]|6[5-9])$_bf_$d{5}\"},{\"i\":\"BR\",\"lbl\":\"Brazil\",\"img\":\"br.png\",\"code\":\"+55\",\"ex\":\"11961234567\",\"ptrn\":\"(?:[14689][1-9]|2[12478]|3[1-578]|5[13-5]|7[13-579])(?:7|9$_bf_$d)$_bf_$d{7}\"},{\"i\":\"BT\",\"lbl\":\"Bhutan\",\"img\":\"bt.png\",\"code\":\"+975\",\"ex\":\"17123456\",\"ptrn\":\"(?:1[67]|77)$_bf_$d{6}\"},{\"i\":\"BW\",\"lbl\":\"Botswana\",\"img\":\"bw.png\",\"code\":\"+267\",\"ex\":\"71123456\",\"ptrn\":\"(?:321|7(?:[1-7]$_bf_$d|8[01]))$_bf_$d{5}\"},{\"i\":\"BY\",\"lbl\":\"Belarus\",\"img\":\"by.png\",\"code\":\"+375\",\"ex\":\"294911911\",\"ptrn\":\"(?:2(?:5[5-79]|9[1-9])|(?:33|44)$_bf_$d)$_bf_$d{6}\"},{\"i\":\"BZ\",\"lbl\":\"Belize\",\"img\":\"bz.png\",\"code\":\"+501\",\"ex\":\"6221234\",\"ptrn\":\"6[0-35-7]$_bf_$d{5}\"},{\"i\":\"CD\",\"lbl\":\"Congo (the Democratic Republic of the)\",\"img\":\"cd.png\",\"code\":\"+243\",\"ex\":\"991234567\",\"ptrn\":\"88$_bf_$d{5}|(?:8[0-59]|9[017-9])$_bf_$d{7}\"},{\"i\":\"CF\",\"lbl\":\"Central African Republic (the)\",\"img\":\"cf.png\",\"code\":\"+236\",\"ex\":\"70012345\",\"ptrn\":\"7[0257]$_bf_$d{6}\"},{\"i\":\"CG\",\"lbl\":\"Congo (the)\",\"img\":\"cg.png\",\"code\":\"+242\",\"ex\":\"061234567\",\"ptrn\":\"026(?:1[0-5]|6[6-9])$_bf_$d{4}|0(?:[14-6]$_bf_$d$_bf_$d|2(?:40|5[5-8]|6[07-9]))$_bf_$d{5}\"},{\"i\":\"CH\",\"lbl\":\"Switzerland\",\"img\":\"ch.png\",\"code\":\"+41\",\"ex\":\"781234567\",\"ptrn\":\"7[35-9]$_bf_$d{7}\"},{\"i\":\"CI\",\"lbl\":\"C\\u00f4te d'Ivoire\",\"img\":\"ci.png\",\"code\":\"+225\",\"ex\":\"0123456789\",\"ptrn\":\"0704[0-7]$_bf_$d{5}|0(?:[15]$_bf_$d$_bf_$d|7(?:0[0-37-9]|[4-9][7-9]))$_bf_$d{6}\"},{\"i\":\"CK\",\"lbl\":\"Cook Islands (the)\",\"img\":\"ck.png\",\"code\":\"+682\",\"ex\":\"71234\",\"ptrn\":\"[578]$_bf_$d{4}\"},{\"i\":\"CL\",\"lbl\":\"Chile\",\"img\":\"cl.png\",\"code\":\"+56\",\"ex\":\"221234567\",\"ptrn\":\"2(?:1982[0-6]|3314[05-9])$_bf_$d{3}|(?:2(?:1(?:160|962)|3(?:2$_bf_$d$_bf_$d|3(?:[03467]$_bf_$d|1[0-35-9]|2[1-9]|5[0-24-9]|8[0-3])|600)|646[59])|80[1-9]$_bf_$d$_bf_$d|9(?:3(?:[0-57-9]$_bf_$d$_bf_$d|6(?:0[02-9]|[1-9]$_bf_$d))|6(?:[0-8]$_bf_$d$_bf_$d|9(?:[02-79]$_bf_$d|1[05-9]))|7[1-9]$_bf_$d$_bf_$d|9(?:[03-9]$_bf_$d$_bf_$d|1(?:[0235-9]$_bf_$d|4[0-24-9])|2(?:[0-79]$_bf_$d|8[0-46-9]))))$_bf_$d{4}|(?:22|3[2-5]|[47][1-35]|5[1-3578]|6[13-57]|8[1-9]|9[2458])$_bf_$d{7}\"},{\"i\":\"CM\",\"lbl\":\"Cameroon\",\"img\":\"cm.png\",\"code\":\"+237\",\"ex\":\"671234567\",\"ptrn\":\"(?:24[23]|6[5-9]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"CN\",\"lbl\":\"China\",\"img\":\"cn.png\",\"code\":\"+86\",\"ex\":\"13123456789\",\"ptrn\":\"1740[0-5]$_bf_$d{6}|1(?:[38]$_bf_$d|4[57]|5[0-35-9]|6[25-7]|7[0-35-8]|9[0135-9])$_bf_$d{8}\"},{\"i\":\"CO\",\"lbl\":\"Colombia\",\"img\":\"co.png\",\"code\":\"+57\",\"ex\":\"3211234567\",\"ptrn\":\"3333(?:0(?:0$_bf_$d|1[0-5])|[4-9]$_bf_$d$_bf_$d)$_bf_$d{3}|(?:3(?:24[2-6]|3(?:00|3[0-24-9]))|9101)$_bf_$d{6}|3(?:0[0-5]|1$_bf_$d|2[0-3]|5[01]|70)$_bf_$d{7}\"},{\"i\":\"CR\",\"lbl\":\"Costa Rica\",\"img\":\"cr.png\",\"code\":\"+506\",\"ex\":\"83123456\",\"ptrn\":\"(?:3005$_bf_$d|6500[01])$_bf_$d{3}|(?:5[07]|6[0-4]|7[0-3]|8[3-9])$_bf_$d{6}\"},{\"i\":\"CU\",\"lbl\":\"Cuba\",\"img\":\"cu.png\",\"code\":\"+53\",\"ex\":\"51234567\",\"ptrn\":\"5$_bf_$d{7}\"},{\"i\":\"CV\",\"lbl\":\"Cabo Verde\",\"img\":\"cv.png\",\"code\":\"+238\",\"ex\":\"9911234\",\"ptrn\":\"(?:[34][36]|5[0-389])$_bf_$d{5}\"},{\"i\":\"CY\",\"lbl\":\"Cyprus\",\"img\":\"cy.png\",\"code\":\"+357\",\"ex\":\"96123456\",\"ptrn\":\"9[4-79]$_bf_$d{6}\"},{\"i\":\"CZ\",\"lbl\":\"Czechia\",\"img\":\"cz.png\",\"code\":\"+420\",\"ex\":\"601123456\",\"ptrn\":\"(?:60[1-8]|7(?:0[2-5]|[2379]$_bf_$d))$_bf_$d{6}\"},{\"i\":\"DE\",\"lbl\":\"Germany\",\"img\":\"de.png\",\"code\":\"+49\",\"ex\":\"15123456789\",\"ptrn\":\"15[0-25-9]$_bf_$d{8}|1(?:6[023]|7$_bf_$d)$_bf_$d{7,8}\"},{\"i\":\"DJ\",\"lbl\":\"Djibouti\",\"img\":\"dj.png\",\"code\":\"+253\",\"ex\":\"77831001\",\"ptrn\":\"77$_bf_$d{6}\"},{\"i\":\"DK\",\"lbl\":\"Denmark\",\"img\":\"dk.png\",\"code\":\"+45\",\"ex\":\"32123456\",\"ptrn\":\"(?:[2-7]$_bf_$d|8[126-9]|9[1-46-9])$_bf_$d{6}\"},{\"i\":\"DZ\",\"lbl\":\"Algeria\",\"img\":\"dz.png\",\"code\":\"+213\",\"ex\":\"551234567\",\"ptrn\":\"(?:5(?:4[0-29]|5$_bf_$d|6[0-2])|6(?:[569]$_bf_$d|7[0-6])|7[7-9]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"EC\",\"lbl\":\"Ecuador\",\"img\":\"ec.png\",\"code\":\"+593\",\"ex\":\"991234567\",\"ptrn\":\"964[0-2]$_bf_$d{5}|9(?:39|[57][89]|6[0-36-9]|[89]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"EE\",\"lbl\":\"Estonia\",\"img\":\"ee.png\",\"code\":\"+372\",\"ex\":\"51234567\",\"ptrn\":\"5(?:[0-35-9]$_bf_$d{6}|4(?:[0-57-9]$_bf_$d{5}|6(?:[0-24-9]$_bf_$d{4}|3(?:[0-35-9]$_bf_$d{3}|4000))))|8(?:1(?:0(?:000|[3-9]$_bf_$d$_bf_$d)|(?:1(?:0[236]|1$_bf_$d)|(?:23|[3-79]$_bf_$d)$_bf_$d)$_bf_$d)|2(?:0(?:000|(?:19|[24-7]$_bf_$d)$_bf_$d)|(?:(?:[124-6]$_bf_$d|3[5-9])$_bf_$d|7(?:[679]$_bf_$d|8[13-9])|8(?:[2-6]$_bf_$d|7[01]))$_bf_$d)|[349]$_bf_$d{4})$_bf_$d$_bf_$d|5(?:(?:[02]$_bf_$d|5[0-478])$_bf_$d|1(?:[0-8]$_bf_$d|95)|6(?:4[0-4]|5[1-589]))$_bf_$d{3}\"},{\"i\":\"EG\",\"lbl\":\"Egypt\",\"img\":\"eg.png\",\"code\":\"+20\",\"ex\":\"1001234567\",\"ptrn\":\"1[0-25]$_bf_$d{8}\"},{\"i\":\"EH\",\"lbl\":\"Western Sahara\",\"img\":\"eh.png\",\"code\":\"+212\",\"ex\":\"650123456\",\"ptrn\":\"(?:6(?:[0-79]$_bf_$d|8[0-247-9])|7(?:0$_bf_$d|1[0-5]|6[1267]|7[0-57]))$_bf_$d{6}\"},{\"i\":\"MA\",\"lbl\":\"Morocco\",\"img\":\"ma.png\",\"code\":\"+212\",\"ex\":\"650123456\",\"ptrn\":\"(?:6(?:[0-79]$_bf_$d|8[0-247-9])|7(?:0$_bf_$d|1[0-5]|6[1267]|7[0-57]))$_bf_$d{6}\"},{\"i\":\"ER\",\"lbl\":\"Eritrea\",\"img\":\"er.png\",\"code\":\"+291\",\"ex\":\"7123456\",\"ptrn\":\"(?:17[1-3]|7$_bf_$d$_bf_$d)$_bf_$d{4}\"},{\"i\":\"ES\",\"lbl\":\"Spain\",\"img\":\"es.png\",\"code\":\"+34\",\"ex\":\"612345678\",\"ptrn\":\"(?:590[16]00$_bf_$d|9(?:6906(?:09|10)|7390$_bf_$d$_bf_$d))$_bf_$d$_bf_$d|(?:6$_bf_$d|7[1-48])$_bf_$d{7}\"},{\"i\":\"ET\",\"lbl\":\"Ethiopia\",\"img\":\"et.png\",\"code\":\"+251\",\"ex\":\"911234567\",\"ptrn\":\"9$_bf_$d{8}\"},{\"i\":\"FJ\",\"lbl\":\"Fiji\",\"img\":\"fj.png\",\"code\":\"+679\",\"ex\":\"7012345\",\"ptrn\":\"(?:[279]$_bf_$d|45|5[01568]|8[034679])$_bf_$d{5}\"},{\"i\":\"FK\",\"lbl\":\"Falkland Islands (the) [Malvinas]\",\"img\":\"fk.png\",\"code\":\"+500\",\"ex\":\"51234\",\"ptrn\":\"[56]$_bf_$d{4}\"},{\"i\":\"FM\",\"lbl\":\"Micronesia (Federated States of)\",\"img\":\"fm.png\",\"code\":\"+691\",\"ex\":\"3501234\",\"ptrn\":\"31(?:00[67]|208|309)$_bf_$d$_bf_$d|(?:3(?:[2357]0[1-9]|602|804|905)|(?:820|9[2-7]$_bf_$d)$_bf_$d)$_bf_$d{3}\"},{\"i\":\"FO\",\"lbl\":\"Faroe Islands (the)\",\"img\":\"fo.png\",\"code\":\"+298\",\"ex\":\"211234\",\"ptrn\":\"(?:[27][1-9]|5$_bf_$d|91)$_bf_$d{4}\"},{\"i\":\"FR\",\"lbl\":\"France\",\"img\":\"fr.png\",\"code\":\"+33\",\"ex\":\"612345678\",\"ptrn\":\"(?:6(?:[0-24-8]$_bf_$d|3[0-8]|9[589])|7(?:00|[3-9]$_bf_$d))$_bf_$d{6}\"},{\"i\":\"GA\",\"lbl\":\"Gabon\",\"img\":\"ga.png\",\"code\":\"+241\",\"ex\":\"06031234\",\"ptrn\":\"(?:0[2-7]|6[256]|7[47])$_bf_$d{6}|[2-7]$_bf_$d{6}\"},{\"i\":\"GB\",\"lbl\":\"United Kingdom of Great Britain and Northern Ireland (the)\",\"img\":\"gb.png\",\"code\":\"+44\",\"ex\":\"7400123456\",\"ptrn\":\"7(?:457[0-57-9]|700[01]|911[028])$_bf_$d{5}|7(?:[1-3]$_bf_$d$_bf_$d|4(?:[0-46-9]$_bf_$d|5[0-689])|5(?:0[0-8]|[13-9]$_bf_$d|2[0-35-9])|7(?:0[1-9]|[1-7]$_bf_$d|8[02-9]|9[0-689])|8(?:[014-9]$_bf_$d|[23][0-8])|9(?:[024-9]$_bf_$d|1[02-9]|3[0-689]))$_bf_$d{6}\"},{\"i\":\"GG\",\"lbl\":\"Guernsey\",\"img\":\"gg.png\",\"code\":\"+44\",\"ex\":\"7781123456\",\"ptrn\":\"7(?:(?:781|839)$_bf_$d|911[17])$_bf_$d{5}\"},{\"i\":\"IM\",\"lbl\":\"Isle of Man\",\"img\":\"im.png\",\"code\":\"+44\",\"ex\":\"7924123456\",\"ptrn\":\"76245[06]$_bf_$d{4}|7(?:4576|[59]24$_bf_$d|624[0-4689])$_bf_$d{5}\"},{\"i\":\"JE\",\"lbl\":\"Jersey\",\"img\":\"je.png\",\"code\":\"+44\",\"ex\":\"7797712345\",\"ptrn\":\"7(?:(?:(?:50|82)9|937)$_bf_$d|7(?:00[378]|97[7-9]))$_bf_$d{5}\"},{\"i\":\"GE\",\"lbl\":\"Georgia\",\"img\":\"ge.png\",\"code\":\"+995\",\"ex\":\"555123456\",\"ptrn\":\"5(?:(?:0555|1177)[5-9]|757(?:7[7-9]|8[01]))$_bf_$d{3}|5(?:0070|(?:11|33)33|[25]222)[0-4]$_bf_$d{3}|5(?:00(?:0$_bf_$d|50)|11(?:00|1$_bf_$d|2[0-4])|5200|75(?:00|[57]5)|8(?:0(?:[01]$_bf_$d|2[0-4])|58[89]|8(?:55|88)))$_bf_$d{4}|(?:5(?:[14]4|5[0157-9]|68|7[0147-9]|9[1-35-9])|790)$_bf_$d{6}\"},{\"i\":\"GF\",\"lbl\":\"French Guiana\",\"img\":\"gf.png\",\"code\":\"+594\",\"ex\":\"694201234\",\"ptrn\":\"694(?:[0-249]$_bf_$d|3[0-48])$_bf_$d{4}\"},{\"i\":\"GH\",\"lbl\":\"Ghana\",\"img\":\"gh.png\",\"code\":\"+233\",\"ex\":\"231234567\",\"ptrn\":\"(?:2(?:[0346-8]$_bf_$d|5[67])|5(?:[0457]$_bf_$d|6[01]|9[1-9]))$_bf_$d{6}\"},{\"i\":\"GI\",\"lbl\":\"Gibraltar\",\"img\":\"gi.png\",\"code\":\"+350\",\"ex\":\"57123456\",\"ptrn\":\"(?:5[146-8]$_bf_$d|606)$_bf_$d{5}\"},{\"i\":\"GL\",\"lbl\":\"Greenland\",\"img\":\"gl.png\",\"code\":\"+299\",\"ex\":\"221234\",\"ptrn\":\"[245]$_bf_$d{5}\"},{\"i\":\"GM\",\"lbl\":\"Gambia (the)\",\"img\":\"gm.png\",\"code\":\"+220\",\"ex\":\"3012345\",\"ptrn\":\"(?:[23679]$_bf_$d|5[0-389])$_bf_$d{5}\"},{\"i\":\"GN\",\"lbl\":\"Guinea\",\"img\":\"gn.png\",\"code\":\"+224\",\"ex\":\"601123456\",\"ptrn\":\"6[0-356]$_bf_$d{7}\"},{\"i\":\"GQ\",\"lbl\":\"Equatorial Guinea\",\"img\":\"gq.png\",\"code\":\"+240\",\"ex\":\"222123456\",\"ptrn\":\"(?:222|55$_bf_$d)$_bf_$d{6}\"},{\"i\":\"GR\",\"lbl\":\"Greece\",\"img\":\"gr.png\",\"code\":\"+30\",\"ex\":\"6912345678\",\"ptrn\":\"68[57-9]$_bf_$d{7}|(?:69|94)$_bf_$d{8}\"},{\"i\":\"GT\",\"lbl\":\"Guatemala\",\"img\":\"gt.png\",\"code\":\"+502\",\"ex\":\"51234567\",\"ptrn\":\"[3-5]$_bf_$d{7}\"},{\"i\":\"GW\",\"lbl\":\"Guinea-Bissau\",\"img\":\"gw.png\",\"code\":\"+245\",\"ex\":\"955012345\",\"ptrn\":\"9(?:5$_bf_$d|6[569]|77)$_bf_$d{6}\"},{\"i\":\"GY\",\"lbl\":\"Guyana\",\"img\":\"gy.png\",\"code\":\"+592\",\"ex\":\"6091234\",\"ptrn\":\"6$_bf_$d{6}\"},{\"i\":\"HK\",\"lbl\":\"Hong Kong\",\"img\":\"hk.png\",\"code\":\"+852\",\"ex\":\"51234567\",\"ptrn\":\"(?:46(?:[07][0-7]|1[0-6]|4[0-57-9]|5[0-8]|6[0-4])|5730|6(?:26[013-7]|66[0-3])|70(?:7[1-5]|8[0-4])|848[015-9]|929[03-9])$_bf_$d{4}|(?:46[238]|5(?:[1-59][0-46-9]|6[0-4689]|7[0-2469])|6(?:0[1-9]|[13-59]$_bf_$d|[268][0-57-9]|7[0-79])|84[09]|9(?:0[1-9]|1[02-9]|[2358][0-8]|[467]$_bf_$d))$_bf_$d{5}\"},{\"i\":\"HN\",\"lbl\":\"Honduras\",\"img\":\"hn.png\",\"code\":\"+504\",\"ex\":\"91234567\",\"ptrn\":\"[37-9]$_bf_$d{7}\"},{\"i\":\"HR\",\"lbl\":\"Croatia\",\"img\":\"hr.png\",\"code\":\"+385\",\"ex\":\"921234567\",\"ptrn\":\"9(?:751$_bf_$d{5}|8$_bf_$d{6,7})|9(?:0[1-9]|[1259]$_bf_$d|7[0679])$_bf_$d{6}\"},{\"i\":\"HT\",\"lbl\":\"Haiti\",\"img\":\"ht.png\",\"code\":\"+509\",\"ex\":\"34101234\",\"ptrn\":\"[34]$_bf_$d{7}\"},{\"i\":\"HU\",\"lbl\":\"Hungary\",\"img\":\"hu.png\",\"code\":\"+36\",\"ex\":\"201234567\",\"ptrn\":\"(?:[257]0|3[01])$_bf_$d{7}\"},{\"i\":\"ID\",\"lbl\":\"Indonesia\",\"img\":\"id.png\",\"code\":\"+62\",\"ex\":\"812345678\",\"ptrn\":\"8[1-35-9]$_bf_$d{7,10}\"},{\"i\":\"IE\",\"lbl\":\"Ireland\",\"img\":\"ie.png\",\"code\":\"+353\",\"ex\":\"850123456\",\"ptrn\":\"8(?:22|[35-9]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"IL\",\"lbl\":\"Israel\",\"img\":\"il.png\",\"code\":\"+972\",\"ex\":\"502345678\",\"ptrn\":\"5(?:(?:[02368]$_bf_$d|[19][2-9]|4[1-9])$_bf_$d|5(?:01|1[79]|2[2-9]|3[0-3]|4[34]|5[015689]|6[6-8]|7[0-267]|8[7-9]|9[1-9]))$_bf_$d{5}\"},{\"i\":\"IN\",\"lbl\":\"India\",\"img\":\"in.png\",\"code\":\"+91\",\"ex\":\"8123456789\",\"ptrn\":\"(?:61279|7(?:887[02-9]|9(?:313|79[07-9]))|8(?:079[04-9]|(?:84|91)7[02-8]))$_bf_$d{5}|(?:6(?:12|[2-47]1|5[17]|6[13]|80)[0189]|7(?:1(?:2[0189]|9[0-5])|2(?:[14][017-9]|8[0-59])|3(?:2[5-8]|[34][017-9]|9[016-9])|4(?:1[015-9]|[29][89]|39|8[389])|5(?:[15][017-9]|2[04-9]|9[7-9])|6(?:0[0-47]|1[0-257-9]|2[0-4]|3[19]|5[4589])|70[0289]|88[089]|97[02-8])|8(?:0(?:6[67]|7[02-8])|70[017-9]|84[01489]|91[0-289]))$_bf_$d{6}|(?:7(?:31|4[47])|8(?:16|2[014]|3[126]|6[136]|7[78]|83))(?:[0189]$_bf_$d|7[02-8])$_bf_$d{5}|(?:6(?:[09]$_bf_$d|1[04679]|2[03689]|3[05-9]|4[0489]|50|6[069]|7[07]|8[7-9])|7(?:0$_bf_$d|2[0235-79]|3[05-8]|40|5[0346-8]|6[6-9]|7[1-9]|8[0-79]|9[089])|8(?:0[01589]|1[0-57-9]|2[235-9]|3[03-57-9]|[45]$_bf_$d|6[02457-9]|7[1-69]|8[0-25-9]|9[02-9])|9$_bf_$d$_bf_$d)$_bf_$d{7}|(?:6(?:(?:1[1358]|2[2457]|3[2-4]|4[235-7]|5[2-689]|6[24578]|8[124-6])$_bf_$d|7(?:[235689]$_bf_$d|4[0189]))|7(?:1(?:[013-8]$_bf_$d|9[6-9])|28[6-8]|3(?:2[0-49]|9[2-5])|4(?:1[2-4]|[29][0-7]|3[0-8]|[56]$_bf_$d|8[0-24-7])|5(?:2[1-3]|9[0-6])|6(?:0[5689]|2[5-9]|3[02-8]|4$_bf_$d|5[0-367])|70[13-7]|881))[0189]$_bf_$d{5}\"},{\"i\":\"IO\",\"lbl\":\"British Indian Ocean Territory (the)\",\"img\":\"io.png\",\"code\":\"+246\",\"ex\":\"3801234\",\"ptrn\":\"38$_bf_$d{5}\"},{\"i\":\"IQ\",\"lbl\":\"Iraq\",\"img\":\"iq.png\",\"code\":\"+964\",\"ex\":\"7912345678\",\"ptrn\":\"7[3-9]$_bf_$d{8}\"},{\"i\":\"IR\",\"lbl\":\"Iran (Islamic Republic of)\",\"img\":\"ir.png\",\"code\":\"+98\",\"ex\":\"9123456789\",\"ptrn\":\"9(?:(?:0(?:[0-35]$_bf_$d|4[4-6])|(?:[13]$_bf_$d|2[0-3])$_bf_$d)$_bf_$d|9(?:(?:[0-3]$_bf_$d|4[0145])$_bf_$d|5[15]0|8(?:1$_bf_$d|88)|9(?:0[013]|[19]$_bf_$d|21|77|8[7-9])))$_bf_$d{5}\"},{\"i\":\"IS\",\"lbl\":\"Iceland\",\"img\":\"is.png\",\"code\":\"+354\",\"ex\":\"6111234\",\"ptrn\":\"(?:38[589]$_bf_$d$_bf_$d|6(?:1[1-8]|2[0-6]|3[027-9]|4[014679]|5[0159]|6[0-69]|70|8[06-8]|9$_bf_$d)|7(?:5[057]|[6-9]$_bf_$d)|8(?:2[0-59]|[3-69]$_bf_$d|8[28]))$_bf_$d{4}\"},{\"i\":\"IT\",\"lbl\":\"Italy\",\"img\":\"it.png\",\"code\":\"+39\",\"ex\":\"3123456789\",\"ptrn\":\"3[1-9]$_bf_$d{8}|3[2-9]$_bf_$d{7}\"},{\"i\":\"VA\",\"lbl\":\"Holy See (the)\",\"img\":\"va.png\",\"code\":\"+39\",\"ex\":\"3123456789\",\"ptrn\":\"3[1-9]$_bf_$d{8}|3[2-9]$_bf_$d{7}\"},{\"i\":\"JO\",\"lbl\":\"Jordan\",\"img\":\"jo.png\",\"code\":\"+962\",\"ex\":\"790123456\",\"ptrn\":\"7(?:[78][0-25-9]|9$_bf_$d)$_bf_$d{6}\"},{\"i\":\"JP\",\"lbl\":\"Japan\",\"img\":\"jp.png\",\"code\":\"+81\",\"ex\":\"9012345678\",\"ptrn\":\"[7-9]0[1-9]$_bf_$d{7}\"},{\"i\":\"KE\",\"lbl\":\"Kenya\",\"img\":\"ke.png\",\"code\":\"+254\",\"ex\":\"712123456\",\"ptrn\":\"(?:1(?:0[0-6]|1[0-5]|2[014])|7$_bf_$d$_bf_$d)$_bf_$d{6}\"},{\"i\":\"KG\",\"lbl\":\"Kyrgyzstan\",\"img\":\"kg.png\",\"code\":\"+996\",\"ex\":\"700123456\",\"ptrn\":\"312(?:58$_bf_$d|973)$_bf_$d{3}|(?:2(?:0[0-35]|2$_bf_$d)|5[0-24-7]$_bf_$d|7(?:[07]$_bf_$d|55)|880|99[05-9])$_bf_$d{6}\"},{\"i\":\"KH\",\"lbl\":\"Cambodia\",\"img\":\"kh.png\",\"code\":\"+855\",\"ex\":\"91234567\",\"ptrn\":\"(?:(?:1[28]|3[18]|9[67])$_bf_$d|6[016-9]|7(?:[07-9]|[16]$_bf_$d)|8(?:[013-79]|8$_bf_$d))$_bf_$d{6}|(?:1$_bf_$d|9[0-57-9])$_bf_$d{6}|(?:2[3-6]|3[2-6]|4[2-4]|[5-7][2-5])48$_bf_$d{5}\"},{\"i\":\"KI\",\"lbl\":\"Kiribati\",\"img\":\"ki.png\",\"code\":\"+686\",\"ex\":\"72001234\",\"ptrn\":\"(?:63$_bf_$d{3}|73(?:0[0-5]$_bf_$d|140))$_bf_$d{3}|[67]200[01]$_bf_$d{3}\"},{\"i\":\"KM\",\"lbl\":\"Comoros (the)\",\"img\":\"km.png\",\"code\":\"+269\",\"ex\":\"3212345\",\"ptrn\":\"[34]$_bf_$d{6}\"},{\"i\":\"KP\",\"lbl\":\"Korea (the Democratic People's Republic of)\",\"img\":\"kp.png\",\"code\":\"+850\",\"ex\":\"1921234567\",\"ptrn\":\"19[1-3]$_bf_$d{7}\"},{\"i\":\"KR\",\"lbl\":\"Korea (the Republic of)\",\"img\":\"kr.png\",\"code\":\"+82\",\"ex\":\"1020000000\",\"ptrn\":\"1(?:05(?:[0-8]$_bf_$d|9[0-6])|22[13]$_bf_$d)$_bf_$d{4,5}|1(?:0[1-46-9]|[16-9]$_bf_$d|2[013-9])$_bf_$d{6,7}\"},{\"i\":\"KW\",\"lbl\":\"Kuwait\",\"img\":\"kw.png\",\"code\":\"+965\",\"ex\":\"50012345\",\"ptrn\":\"(?:5(?:2(?:22|5[25])|7(?:55|77)|88[58])|6(?:222|333|444|70[013-9]|888|93[039])|9(?:11[01]|3(?:00|33)|500))$_bf_$d{4}|(?:5(?:[05]$_bf_$d|1[0-7]|6[56])|6(?:0[034679]|5[015-9]|6$_bf_$d|7[67]|9[069])|9(?:0[09]|22|[4679]$_bf_$d|55|8[057-9]))$_bf_$d{5}\"},{\"i\":\"KZ\",\"lbl\":\"Kazakhstan\",\"img\":\"kz.png\",\"code\":\"+7\",\"ex\":\"7710009998\",\"ptrn\":\"7(?:0[0-25-8]|47|6[0-4]|7[15-8]|85)$_bf_$d{7}\"},{\"i\":\"RU\",\"lbl\":\"Russian Federation (the)\",\"img\":\"ru.png\",\"code\":\"+7\",\"ex\":\"9123456789\",\"ptrn\":\"9$_bf_$d{9}\"},{\"i\":\"LA\",\"lbl\":\"Lao People's Democratic Republic (the)\",\"img\":\"la.png\",\"code\":\"+856\",\"ex\":\"2023123456\",\"ptrn\":\"(?:20(?:[239]$_bf_$d|5[24-9]|7[6-8])|302$_bf_$d)$_bf_$d{6}\"},{\"i\":\"LB\",\"lbl\":\"Lebanon\",\"img\":\"lb.png\",\"code\":\"+961\",\"ex\":\"71123456\",\"ptrn\":\"793(?:[01]$_bf_$d|2[0-4])$_bf_$d{3}|(?:(?:3|81)$_bf_$d|7(?:[01]$_bf_$d|6[013-9]|8[89]|9[12]))$_bf_$d{5}\"},{\"i\":\"LI\",\"lbl\":\"Liechtenstein\",\"img\":\"li.png\",\"code\":\"+423\",\"ex\":\"660234567\",\"ptrn\":\"(?:6(?:4(?:69|[7-9]$_bf_$d)|5[0-4]$_bf_$d|6(?:[024]$_bf_$d|[17]0|3[7-9]))$_bf_$d|7(?:[37-9]$_bf_$d|42|56))$_bf_$d{4}\"},{\"i\":\"LK\",\"lbl\":\"Sri Lanka\",\"img\":\"lk.png\",\"code\":\"+94\",\"ex\":\"712345678\",\"ptrn\":\"7(?:[0-25-8]$_bf_$d|4[01])$_bf_$d{6}\"},{\"i\":\"LR\",\"lbl\":\"Liberia\",\"img\":\"lr.png\",\"code\":\"+231\",\"ex\":\"770123456\",\"ptrn\":\"(?:(?:330|555|(?:77|88)$_bf_$d)$_bf_$d|4[67])$_bf_$d{5}|[56]$_bf_$d{6}\"},{\"i\":\"LS\",\"lbl\":\"Lesotho\",\"img\":\"ls.png\",\"code\":\"+266\",\"ex\":\"50123456\",\"ptrn\":\"[56]$_bf_$d{7}\"},{\"i\":\"LT\",\"lbl\":\"Lithuania\",\"img\":\"lt.png\",\"code\":\"+370\",\"ex\":\"61234567\",\"ptrn\":\"6$_bf_$d{7}\"},{\"i\":\"LU\",\"lbl\":\"Luxembourg\",\"img\":\"lu.png\",\"code\":\"+352\",\"ex\":\"628123456\",\"ptrn\":\"6(?:[269][18]|5[1568]|7[189]|81)$_bf_$d{6}\"},{\"i\":\"LV\",\"lbl\":\"Latvia\",\"img\":\"lv.png\",\"code\":\"+371\",\"ex\":\"21234567\",\"ptrn\":\"2$_bf_$d{7}\"},{\"i\":\"LY\",\"lbl\":\"Libya\",\"img\":\"ly.png\",\"code\":\"+218\",\"ex\":\"912345678\",\"ptrn\":\"9[1-6]$_bf_$d{7}\"},{\"i\":\"MC\",\"lbl\":\"Monaco\",\"img\":\"mc.png\",\"code\":\"+377\",\"ex\":\"612345678\",\"ptrn\":\"4(?:[46]$_bf_$d|5[1-9])$_bf_$d{5}|(?:3|6$_bf_$d)$_bf_$d{7}\"},{\"i\":\"MD\",\"lbl\":\"Moldova (the Republic of)\",\"img\":\"md.png\",\"code\":\"+373\",\"ex\":\"62112345\",\"ptrn\":\"562$_bf_$d{5}|(?:6$_bf_$d|7[16-9])$_bf_$d{6}\"},{\"i\":\"ME\",\"lbl\":\"Montenegro\",\"img\":\"me.png\",\"code\":\"+382\",\"ex\":\"67622901\",\"ptrn\":\"6(?:[07-9]$_bf_$d|3[024]|6[0-25])$_bf_$d{5}\"},{\"i\":\"MG\",\"lbl\":\"Madagascar\",\"img\":\"mg.png\",\"code\":\"+261\",\"ex\":\"321234567\",\"ptrn\":\"3[2-489]$_bf_$d{7}\"},{\"i\":\"MH\",\"lbl\":\"Marshall Islands (the)\",\"img\":\"mh.png\",\"code\":\"+692\",\"ex\":\"2351234\",\"ptrn\":\"(?:(?:23|54)5|329|45[56])$_bf_$d{4}\"},{\"i\":\"MK\",\"lbl\":\"Republic of North Macedonia\",\"img\":\"mk.png\",\"code\":\"+389\",\"ex\":\"72345678\",\"ptrn\":\"7(?:3555|4(?:60$_bf_$d|747)|94(?:[01]$_bf_$d|2[0-4]))$_bf_$d{3}|7(?:[0-25-8]$_bf_$d|3[2-4]|42|9[23])$_bf_$d{5}\"},{\"i\":\"ML\",\"lbl\":\"Mali\",\"img\":\"ml.png\",\"code\":\"+223\",\"ex\":\"65012345\",\"ptrn\":\"2(?:0(?:01|79)|17$_bf_$d)$_bf_$d{4}|(?:5[01]|[679]$_bf_$d|8[239])$_bf_$d{6}\"},{\"i\":\"MM\",\"lbl\":\"Myanmar\",\"img\":\"mm.png\",\"code\":\"+95\",\"ex\":\"92123456\",\"ptrn\":\"(?:17[01]|9(?:2(?:[0-4]|[56]$_bf_$d$_bf_$d)|(?:3(?:[0-36]|4$_bf_$d)|(?:6$_bf_$d|8[89]|9[4-8])$_bf_$d|7(?:3|40|[5-9]$_bf_$d))$_bf_$d|4(?:(?:[0245]$_bf_$d|[1379])$_bf_$d|88)|5[0-6])$_bf_$d)$_bf_$d{4}|9[69]1$_bf_$d{6}|9(?:[68]$_bf_$d|9[089])$_bf_$d{5}\"},{\"i\":\"MN\",\"lbl\":\"Mongolia\",\"img\":\"mn.png\",\"code\":\"+976\",\"ex\":\"88123456\",\"ptrn\":\"(?:83[01]|920)$_bf_$d{5}|(?:5[05]|8[05689]|9[013-9])$_bf_$d{6}\"},{\"i\":\"MO\",\"lbl\":\"Macao\",\"img\":\"mo.png\",\"code\":\"+853\",\"ex\":\"66123456\",\"ptrn\":\"6800[0-79]$_bf_$d{3}|6(?:[235]$_bf_$d$_bf_$d|6(?:0[0-5]|[1-9]$_bf_$d)|8(?:0[1-9]|[14-8]$_bf_$d|2[5-9]|[39][0-4]))$_bf_$d{4}\"},{\"i\":\"MQ\",\"lbl\":\"Martinique\",\"img\":\"mq.png\",\"code\":\"+596\",\"ex\":\"696201234\",\"ptrn\":\"69(?:6(?:[0-46-9]$_bf_$d|5[0-6])|727)$_bf_$d{4}\"},{\"i\":\"MR\",\"lbl\":\"Mauritania\",\"img\":\"mr.png\",\"code\":\"+222\",\"ex\":\"22123456\",\"ptrn\":\"[2-4][0-46-9]$_bf_$d{6}\"},{\"i\":\"MT\",\"lbl\":\"Malta\",\"img\":\"mt.png\",\"code\":\"+356\",\"ex\":\"96961234\",\"ptrn\":\"(?:7(?:210|[79]$_bf_$d$_bf_$d)|9(?:[29]$_bf_$d$_bf_$d|69[67]|8(?:1[1-3]|89|97)))$_bf_$d{4}\"},{\"i\":\"MU\",\"lbl\":\"Mauritius\",\"img\":\"mu.png\",\"code\":\"+230\",\"ex\":\"52512345\",\"ptrn\":\"5(?:4(?:2[1-389]|7[1-9])|87[15-8])$_bf_$d{4}|5(?:2[5-9]|4[3-589]|[57]$_bf_$d|8[0-689]|9[0-8])$_bf_$d{5}\"},{\"i\":\"MV\",\"lbl\":\"Maldives\",\"img\":\"mv.png\",\"code\":\"+960\",\"ex\":\"7712345\",\"ptrn\":\"46[46]$_bf_$d{4}|(?:7$_bf_$d|9[13-9])$_bf_$d{5}\"},{\"i\":\"MW\",\"lbl\":\"Malawi\",\"img\":\"mw.png\",\"code\":\"+265\",\"ex\":\"991234567\",\"ptrn\":\"111$_bf_$d{6}|(?:31|77|88|9[89])$_bf_$d{7}\"},{\"i\":\"MX\",\"lbl\":\"Mexico\",\"img\":\"mx.png\",\"code\":\"+52\",\"ex\":\"12221234567\",\"ptrn\":\"6571$_bf_$d{6}|(?:1(?:2(?:2[1-9]|3[1-35-8]|4[13-9]|7[1-689]|8[1-578]|9[467])|3(?:1[1-79]|[2458][1-9]|3$_bf_$d|7[1-8]|9[1-5])|4(?:1[1-57-9]|[24-7][1-9]|3[1-8]|8[1-35-9]|9[2-689])|5(?:[56]$_bf_$d|88|9[1-79])|6(?:1[2-68]|[2-4][1-9]|5[1-3689]|6[1-57-9]|7[1-7]|8[67]|9[4-8])|7(?:[1-467][1-9]|5[13-9]|8[1-69]|9[17])|8(?:1$_bf_$d|2[13-689]|3[1-6]|4[124-6]|6[1246-9]|7[1-378]|9[12479])|9(?:1[346-9]|2[1-4]|3[2-46-8]|5[1348]|[69][1-9]|7[12]|8[1-8]))|2(?:2[1-9]|3[1-35-8]|4[13-9]|7[1-689]|8[1-578]|9[467])|3(?:1[1-79]|[2458][1-9]|3$_bf_$d|7[1-8]|9[1-5])|4(?:1[1-57-9]|[25-7][1-9]|3[1-8]|4$_bf_$d|8[1-35-9]|9[2-689])|5(?:[56]$_bf_$d|88|9[1-79])|6(?:1[2-68]|[2-4][1-9]|5[1-3689]|6[1-57-9]|7[1-7]|8[67]|9[4-8])|7(?:[1-467][1-9]|5[13-9]|8[1-69]|9[17])|8(?:1$_bf_$d|2[13-689]|3[1-6]|4[124-6]|6[1246-9]|7[1-378]|9[12479])|9(?:1[346-9]|2[1-4]|3[2-46-8]|5[1348]|6[1-9]|7[12]|8[1-8]|9$_bf_$d))$_bf_$d{7}\"},{\"i\":\"MY\",\"lbl\":\"Malaysia\",\"img\":\"my.png\",\"code\":\"+60\",\"ex\":\"123456789\",\"ptrn\":\"1(?:1888[69]|4400|8(?:47|8[27])[0-4])$_bf_$d{4}|1(?:0(?:[23568]$_bf_$d|4[0-6]|7[016-9]|9[0-8])|1(?:[1-5]$_bf_$d$_bf_$d|6(?:0[5-9]|[1-9]$_bf_$d)|7(?:[0134]$_bf_$d|2[1-9]|5[0-6]))|(?:(?:[269]|59)$_bf_$d|[37][1-9]|4[235-9])$_bf_$d|8(?:1[23]|[236]$_bf_$d|4[06]|5[7-9]|7[016-9]|8[01]|9[0-8]))$_bf_$d{5}\"},{\"i\":\"MZ\",\"lbl\":\"Mozambique\",\"img\":\"mz.png\",\"code\":\"+258\",\"ex\":\"821234567\",\"ptrn\":\"8[2-79]$_bf_$d{7}\"},{\"i\":\"NA\",\"lbl\":\"Namibia\",\"img\":\"na.png\",\"code\":\"+264\",\"ex\":\"811234567\",\"ptrn\":\"(?:60|8[1245])$_bf_$d{7}\"},{\"i\":\"NC\",\"lbl\":\"New Caledonia\",\"img\":\"nc.png\",\"code\":\"+687\",\"ex\":\"751234\",\"ptrn\":\"(?:5[0-4]|[79]$_bf_$d|8[0-79])$_bf_$d{4}\"},{\"i\":\"NE\",\"lbl\":\"Niger (the)\",\"img\":\"ne.png\",\"code\":\"+227\",\"ex\":\"93123456\",\"ptrn\":\"(?:23|7[04]|[89]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"NF\",\"lbl\":\"Norfolk Island\",\"img\":\"nf.png\",\"code\":\"+672\",\"ex\":\"381234\",\"ptrn\":\"(?:14|3[58])$_bf_$d{4}\"},{\"i\":\"NG\",\"lbl\":\"Nigeria\",\"img\":\"ng.png\",\"code\":\"+234\",\"ex\":\"8021234567\",\"ptrn\":\"(?:702[0-24-9]|8(?:01|19)[01])$_bf_$d{6}|(?:70[13-689]|8(?:0[2-9]|1[0-8])|9(?:0[1-9]|1[2356]))$_bf_$d{7}\"},{\"i\":\"NI\",\"lbl\":\"Nicaragua\",\"img\":\"ni.png\",\"code\":\"+505\",\"ex\":\"81234567\",\"ptrn\":\"(?:5(?:5[0-7]|[78]$_bf_$d)|6(?:20|3[035]|4[045]|5[05]|77|8[1-9]|9[059])|(?:7[5-8]|8$_bf_$d)$_bf_$d)$_bf_$d{5}\"},{\"i\":\"NL\",\"lbl\":\"Netherlands (the)\",\"img\":\"nl.png\",\"code\":\"+31\",\"ex\":\"612345678\",\"ptrn\":\"6[1-58]$_bf_$d{7}\"},{\"i\":\"NO\",\"lbl\":\"Norway\",\"img\":\"no.png\",\"code\":\"+47\",\"ex\":\"40612345\",\"ptrn\":\"(?:4[015-8]|59|9$_bf_$d)$_bf_$d{6}\"},{\"i\":\"SJ\",\"lbl\":\"Svalbard and Jan Mayen\",\"img\":\"sj.png\",\"code\":\"+47\",\"ex\":\"41234567\",\"ptrn\":\"(?:4[015-8]|59|9$_bf_$d)$_bf_$d{6}\"},{\"i\":\"NP\",\"lbl\":\"Nepal\",\"img\":\"np.png\",\"code\":\"+977\",\"ex\":\"9841234567\",\"ptrn\":\"9(?:6[0-3]|7[245]|8[0-24-68])$_bf_$d{7}\"},{\"i\":\"NR\",\"lbl\":\"Nauru\",\"img\":\"nr.png\",\"code\":\"+674\",\"ex\":\"5551234\",\"ptrn\":\"(?:55[3-9]|666|8$_bf_$d$_bf_$d)$_bf_$d{4}\"},{\"i\":\"NU\",\"lbl\":\"Niue\",\"img\":\"nu.png\",\"code\":\"+683\",\"ex\":\"8884012\",\"ptrn\":\"888[4-9]$_bf_$d{3}\"},{\"i\":\"NZ\",\"lbl\":\"New Zealand\",\"img\":\"nz.png\",\"code\":\"+64\",\"ex\":\"211234567\",\"ptrn\":\"2[0-27-9]$_bf_$d{7,8}|21$_bf_$d{6}\"},{\"i\":\"OM\",\"lbl\":\"Oman\",\"img\":\"om.png\",\"code\":\"+968\",\"ex\":\"92123456\",\"ptrn\":\"1505$_bf_$d{4}|(?:7(?:[1289]$_bf_$d|70)|9(?:0[1-9]|[1-9]$_bf_$d))$_bf_$d{5}\"},{\"i\":\"PA\",\"lbl\":\"Panama\",\"img\":\"pa.png\",\"code\":\"+507\",\"ex\":\"61234567\",\"ptrn\":\"(?:1[16]1|21[89]|6(?:[02-9]$_bf_$d|1[0-8])$_bf_$d|8(?:1[01]|7[23]))$_bf_$d{4}\"},{\"i\":\"PE\",\"lbl\":\"Peru\",\"img\":\"pe.png\",\"code\":\"+51\",\"ex\":\"912345678\",\"ptrn\":\"9$_bf_$d{8}\"},{\"i\":\"PF\",\"lbl\":\"French Polynesia\",\"img\":\"pf.png\",\"code\":\"+689\",\"ex\":\"87123456\",\"ptrn\":\"8[7-9]$_bf_$d{6}\"},{\"i\":\"PG\",\"lbl\":\"Papua New Guinea\",\"img\":\"pg.png\",\"code\":\"+675\",\"ex\":\"70123456\",\"ptrn\":\"(?:7$_bf_$d|8[18])$_bf_$d{6}\"},{\"i\":\"PH\",\"lbl\":\"Philippines (the)\",\"img\":\"ph.png\",\"code\":\"+63\",\"ex\":\"9051234567\",\"ptrn\":\"(?:8(?:1[37]|9[5-8])|9(?:0[5-9]|1[0-24-9]|[2357]$_bf_$d|4[2-9]|6[0-35-9]|8[135-9]|9[1-9]))$_bf_$d{7}\"},{\"i\":\"PK\",\"lbl\":\"Pakistan\",\"img\":\"pk.png\",\"code\":\"+92\",\"ex\":\"3012345678\",\"ptrn\":\"3(?:[014]$_bf_$d|2[0-5]|3[0-7]|55|64)$_bf_$d{7}\"},{\"i\":\"PL\",\"lbl\":\"Poland\",\"img\":\"pl.png\",\"code\":\"+48\",\"ex\":\"512345678\",\"ptrn\":\"211(?:1$_bf_$d|3[1-5])$_bf_$d{4}|(?:45|5[0137]|6[069]|7[2389]|88)$_bf_$d{7}\"},{\"i\":\"PM\",\"lbl\":\"Saint Pierre and Miquelon\",\"img\":\"pm.png\",\"code\":\"+508\",\"ex\":\"551234\",\"ptrn\":\"(?:4[02-4]|5[05])$_bf_$d{4}\"},{\"i\":\"PS\",\"lbl\":\"Palestine, State of\",\"img\":\"ps.png\",\"code\":\"+970\",\"ex\":\"599123456\",\"ptrn\":\"5[69]$_bf_$d{7}\"},{\"i\":\"PT\",\"lbl\":\"Portugal\",\"img\":\"pt.png\",\"code\":\"+351\",\"ex\":\"912345678\",\"ptrn\":\"6[0356]92(?:30|9$_bf_$d)$_bf_$d{3}|(?:(?:16|6[0356])93|9(?:[1-36]$_bf_$d$_bf_$d|480))$_bf_$d{5}\"},{\"i\":\"PW\",\"lbl\":\"Palau\",\"img\":\"pw.png\",\"code\":\"+680\",\"ex\":\"6201234\",\"ptrn\":\"(?:46[0-5]|6[2-4689]0)$_bf_$d{4}|(?:45|77|88)$_bf_$d{5}\"},{\"i\":\"PY\",\"lbl\":\"Paraguay\",\"img\":\"py.png\",\"code\":\"+595\",\"ex\":\"961456789\",\"ptrn\":\"9(?:51|6[129]|[78][1-6]|9[1-5])$_bf_$d{6}\"},{\"i\":\"QA\",\"lbl\":\"Qatar\",\"img\":\"qa.png\",\"code\":\"+974\",\"ex\":\"33123456\",\"ptrn\":\"(?:28|[35-7]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"RE\",\"lbl\":\"R\\u00e9union\",\"img\":\"re.png\",\"code\":\"+262\",\"ex\":\"692123456\",\"ptrn\":\"(?:69(?:2$_bf_$d$_bf_$d|3(?:[06][0-46]|1[013]|2[0-2]|3[0-39]|4$_bf_$d|5[0-5]|7[0-27]|8[0-8]|9[0-479]))|9769$_bf_$d)$_bf_$d{4}\"},{\"i\":\"YT\",\"lbl\":\"Mayotte\",\"img\":\"yt.png\",\"code\":\"+262\",\"ex\":\"639012345\",\"ptrn\":\"639(?:0[0-79]|1[019]|[267]$_bf_$d|3[09]|40|5[05-9]|9[04-79])$_bf_$d{4}\"},{\"i\":\"RO\",\"lbl\":\"Romania\",\"img\":\"ro.png\",\"code\":\"+40\",\"ex\":\"712034567\",\"ptrn\":\"7020$_bf_$d{5}|7(?:0[013-9]|1[0-2]|[2-7]$_bf_$d|8[03-8]|9[019])$_bf_$d{6}\"},{\"i\":\"RS\",\"lbl\":\"Serbia\",\"img\":\"rs.png\",\"code\":\"+381\",\"ex\":\"601234567\",\"ptrn\":\"6(?:[0-689]|7$_bf_$d)$_bf_$d{6,7}\"},{\"i\":\"RW\",\"lbl\":\"Rwanda\",\"img\":\"rw.png\",\"code\":\"+250\",\"ex\":\"720123456\",\"ptrn\":\"7[2389]$_bf_$d{7}\"},{\"i\":\"SA\",\"lbl\":\"Saudi Arabia\",\"img\":\"sa.png\",\"code\":\"+966\",\"ex\":\"512345678\",\"ptrn\":\"579[01]$_bf_$d{5}|5(?:[013-689]$_bf_$d|7[0-36-8])$_bf_$d{6}\"},{\"i\":\"SB\",\"lbl\":\"Solomon Islands\",\"img\":\"sb.png\",\"code\":\"+677\",\"ex\":\"7421234\",\"ptrn\":\"48$_bf_$d{3}|(?:(?:7[1-9]|8[4-9])$_bf_$d|9(?:1[2-9]|2[013-9]|3[0-2]|[46]$_bf_$d|5[0-46-9]|7[0-689]|8[0-79]|9[0-8]))$_bf_$d{4}\"},{\"i\":\"SC\",\"lbl\":\"Seychelles\",\"img\":\"sc.png\",\"code\":\"+248\",\"ex\":\"2510123\",\"ptrn\":\"2[5-8]$_bf_$d{5}\"},{\"i\":\"SD\",\"lbl\":\"Sudan (the)\",\"img\":\"sd.png\",\"code\":\"+249\",\"ex\":\"911231234\",\"ptrn\":\"(?:1[0-2]|9[0-3569])$_bf_$d{7}\"},{\"i\":\"SE\",\"lbl\":\"Sweden\",\"img\":\"se.png\",\"code\":\"+46\",\"ex\":\"701234567\",\"ptrn\":\"7[02369]$_bf_$d{7}\"},{\"i\":\"SG\",\"lbl\":\"Singapore\",\"img\":\"sg.png\",\"code\":\"+65\",\"ex\":\"81234567\",\"ptrn\":\"(?:8(?:0(?:[13]$_bf_$d|2[013-9]|4[0-35-7])|[1-8]$_bf_$d$_bf_$d|9(?:[0-4]$_bf_$d|5[0-2]))|9[0-8]$_bf_$d$_bf_$d)$_bf_$d{4}\"},{\"i\":\"SH\",\"lbl\":\"Saint Helena, Ascension and Tristan da Cunha\",\"img\":\"sh.png\",\"code\":\"+290\",\"ex\":\"51234\",\"ptrn\":\"[56]$_bf_$d{4}\"},{\"i\":\"SI\",\"lbl\":\"Slovenia\",\"img\":\"si.png\",\"code\":\"+386\",\"ex\":\"31234567\",\"ptrn\":\"65(?:1$_bf_$d|55|[67]0)$_bf_$d{4}|(?:[37][01]|4[0139]|51|6[489])$_bf_$d{6}\"},{\"i\":\"SK\",\"lbl\":\"Slovakia\",\"img\":\"sk.png\",\"code\":\"+421\",\"ex\":\"912123456\",\"ptrn\":\"909[1-9]$_bf_$d{5}|9(?:0[1-8]|1[0-24-9]|4[03-57-9]|5$_bf_$d)$_bf_$d{6}\"},{\"i\":\"SL\",\"lbl\":\"Sierra Leone\",\"img\":\"sl.png\",\"code\":\"+232\",\"ex\":\"25123456\",\"ptrn\":\"(?:25|3[0-5]|66|7[3-9]|8[08]|9[09])$_bf_$d{6}\"},{\"i\":\"SM\",\"lbl\":\"San Marino\",\"img\":\"sm.png\",\"code\":\"+378\",\"ex\":\"66661212\",\"ptrn\":\"6[16]$_bf_$d{6}\"},{\"i\":\"SN\",\"lbl\":\"Senegal\",\"img\":\"sn.png\",\"code\":\"+221\",\"ex\":\"701234567\",\"ptrn\":\"75(?:01|[38]3)$_bf_$d{5}|7(?:[06-8]$_bf_$d|21|5[4-7]|90)$_bf_$d{6}\"},{\"i\":\"SO\",\"lbl\":\"Somalia\",\"img\":\"so.png\",\"code\":\"+252\",\"ex\":\"71123456\",\"ptrn\":\"(?:(?:15|(?:3[59]|4[89]|79|8[08])$_bf_$d|6(?:0[5-7]|[1-9]$_bf_$d)|9(?:0$_bf_$d|[2-9]))$_bf_$d|2(?:4$_bf_$d|8))$_bf_$d{5}|(?:6$_bf_$d|7[1-9])$_bf_$d{6}\"},{\"i\":\"SR\",\"lbl\":\"Suriname\",\"img\":\"sr.png\",\"code\":\"+597\",\"ex\":\"7412345\",\"ptrn\":\"(?:7[124-7]|8[124-9])$_bf_$d{5}\"},{\"i\":\"SS\",\"lbl\":\"South Sudan\",\"img\":\"ss.png\",\"code\":\"+211\",\"ex\":\"977123456\",\"ptrn\":\"(?:12|9[1257-9])$_bf_$d{7}\"},{\"i\":\"ST\",\"lbl\":\"Sao Tome and Principe\",\"img\":\"st.png\",\"code\":\"+239\",\"ex\":\"9812345\",\"ptrn\":\"900[5-9]$_bf_$d{3}|9(?:0[1-9]|[89]$_bf_$d)$_bf_$d{4}\"},{\"i\":\"SV\",\"lbl\":\"El Salvador\",\"img\":\"sv.png\",\"code\":\"+503\",\"ex\":\"70123456\",\"ptrn\":\"66(?:[02-9]$_bf_$d$_bf_$d|1(?:[02-9]$_bf_$d|16))$_bf_$d{3}|(?:6[0-57-9]|7$_bf_$d)$_bf_$d{6}\"},{\"i\":\"SY\",\"lbl\":\"Syrian Arab Republic\",\"img\":\"sy.png\",\"code\":\"+963\",\"ex\":\"944567890\",\"ptrn\":\"9(?:22|[3-689]$_bf_$d)$_bf_$d{6}\"},{\"i\":\"SZ\",\"lbl\":\"Eswatini\",\"img\":\"sz.png\",\"code\":\"+268\",\"ex\":\"76123456\",\"ptrn\":\"7[6-9]$_bf_$d{6}\"},{\"i\":\"TD\",\"lbl\":\"Chad\",\"img\":\"td.png\",\"code\":\"+235\",\"ex\":\"63012345\",\"ptrn\":\"(?:6[023568]|77|9$_bf_$d)$_bf_$d{6}\"},{\"i\":\"TG\",\"lbl\":\"Togo\",\"img\":\"tg.png\",\"code\":\"+228\",\"ex\":\"90112345\",\"ptrn\":\"(?:7[09]|9[0-36-9])$_bf_$d{6}\"},{\"i\":\"TH\",\"lbl\":\"Thailand\",\"img\":\"th.png\",\"code\":\"+66\",\"ex\":\"812345678\",\"ptrn\":\"671[0-3]$_bf_$d{5}|(?:14|6[1-6]|[89]$_bf_$d)$_bf_$d{7}\"},{\"i\":\"TJ\",\"lbl\":\"Tajikistan\",\"img\":\"tj.png\",\"code\":\"+992\",\"ex\":\"917123456\",\"ptrn\":\"41[18]$_bf_$d{6}|(?:[034]0|11|2[02]|5[05]|7[07]|8[08]|9$_bf_$d)$_bf_$d{7}\"},{\"i\":\"TK\",\"lbl\":\"Tokelau\",\"img\":\"tk.png\",\"code\":\"+690\",\"ex\":\"7290\",\"ptrn\":\"7[2-4]$_bf_$d{2,5}\"},{\"i\":\"TL\",\"lbl\":\"Timor-Leste\",\"img\":\"tl.png\",\"code\":\"+670\",\"ex\":\"77212345\",\"ptrn\":\"7[2-8]$_bf_$d{6}\"},{\"i\":\"TM\",\"lbl\":\"Turkmenistan\",\"img\":\"tm.png\",\"code\":\"+993\",\"ex\":\"66123456\",\"ptrn\":\"6$_bf_$d{7}\"},{\"i\":\"TN\",\"lbl\":\"Tunisia\",\"img\":\"tn.png\",\"code\":\"+216\",\"ex\":\"20123456\",\"ptrn\":\"3(?:001|[12]40)$_bf_$d{4}|(?:(?:[259]$_bf_$d|4[0-7])$_bf_$d|3(?:1[1-35]|6[0-4]|91))$_bf_$d{5}\"},{\"i\":\"TO\",\"lbl\":\"Tonga\",\"img\":\"to.png\",\"code\":\"+676\",\"ex\":\"7715123\",\"ptrn\":\"(?:55[4-6]|6(?:[09]$_bf_$d|3[02]|8[15-9])|(?:7$_bf_$d|8[46-9])$_bf_$d|999)$_bf_$d{4}\"},{\"i\":\"TR\",\"lbl\":\"Turkey\",\"img\":\"tr.png\",\"code\":\"+90\",\"ex\":\"5012345678\",\"ptrn\":\"56161$_bf_$d{5}|5(?:0[15-7]|1[06]|24|[34]$_bf_$d|5[1-59]|9[46])$_bf_$d{7}\"},{\"i\":\"TV\",\"lbl\":\"Tuvalu\",\"img\":\"tv.png\",\"code\":\"+688\",\"ex\":\"901234\",\"ptrn\":\"(?:7[01]$_bf_$d|90)$_bf_$d{4}\"},{\"i\":\"TW\",\"lbl\":\"Taiwan (Province of China)\",\"img\":\"tw.png\",\"code\":\"+886\",\"ex\":\"912345678\",\"ptrn\":\"(?:40001[0-2]|9[0-8]$_bf_$d{4})$_bf_$d{3}\"},{\"i\":\"TZ\",\"lbl\":\"Tanzania, United Republic of\",\"img\":\"tz.png\",\"code\":\"+255\",\"ex\":\"621234567\",\"ptrn\":\"77[2-9]$_bf_$d{6}|(?:6[1-9]|7[1-689])$_bf_$d{7}\"},{\"i\":\"UA\",\"lbl\":\"Ukraine\",\"img\":\"ua.png\",\"code\":\"+380\",\"ex\":\"501234567\",\"ptr\\u6781\":\"(?:50|6[36-8]|7[1-3]|9[1-9])$_bf_$d{7}\"},{\"i\":\"UG\",\"lbl\":\"Uganda\",\"img\":\"ug.png\",\"code\":\"+256\",\"ex\":\"712345678\",\"ptrn\":\"726[01]$_bf_$d{5}|7(?:[0157-9]$_bf_$d|20|36|[46][0-4])$_bf\\u6781$d{6}\"},{\"i\":\"UY\",\"lbl\":\"Uruguay\",\"img\":\"uy.png\",\"code\":\"+598\",\"ex\":\"94231234\",\"ptrn\":\"9[1-9]$_bf_$d{6}\"},{\"i\":\"UZ\",\"lbl\":\"Uzbekistan\",\"img\":\"uz.png\",\"code\":\"+998\",\"ex\":\"912345678\",\"ptrn\":\"(?:(?:33|88|9[0-57-9])$_bf_$d{3}|55(?:50[013]|90$_bf_$d)|6(?:1(?:2(?:2[01]|98)|35[0-4]|50$_bf_$d|61[23]|7(?:[01][017]|4$_bf_$d|55|9[5-9]))|2(?:(?:11|7$_bf_$d)$_bf_$d|2(?:[12]1|9[01379])|5(?:[126]$_bf_$d|3[0-4]))|5(?:19[01]|2(?:27|9[26])|(?:30|59|7$_bf_$d)$_bf_$d)|6(?:2(?:1[5-9]|2[0367]|38|41|52|60)|(?:3[79]|9[0-3])$_bf_$d|4(?:56|83)|7(?:[07]$_bf_$d|1[017]|3[07]|4[047]|5[057]|67|8[0178]|9[79]))|7(?:2(?:24|3[237]|4[5-9]|7[15-8])|5(?:7[12]|8[0589])|7(?:0$_bf_$d|[39][07])|9(?:0$_bf_$d|7[079]))|9(?:2(?:1[1267]|3[01]|5$_bf_$d|\\u67817[0-4])|(?:5[67]|7$_bf_$d)$_bf_$d|6(?:2[0-26]|8$_bf_$d)))|7(?:[07]$_bf_$d{3}|1(?:13[01]|6(?:0[47]|1[67]|66)|71[3-69]|98$_bf_$d)|2(?:2(?:2[79]|95)|3(?:2[5-9]|6[0-6])|57$_bf_$d|7(?:0$_bf_$d|1[17]|2[27]|3[37]|44|5[057]|66|88))|3(?:2(?:1[0-6]|21|3[469]|7[159])|(?:33|9[4-6])$_bf_$d|5(?:0[0-4]|5[579]|9$_bf_$d)|7(?:[0-3579]$_bf_$d|4[0467]|6[67]|8[078]))|4(?:2(?:29|5[0257]|6[0-7]|7[1-57])|5(?:1[0-4]|8$_bf_$d|9[5-9])|7(?:0$_bf_$d|1[024589]|2[0-27]|3[0137]|[46][07]|5[01]|7[5-9]|9[079])|9(?:7[015-9]|[89]$_bf_$d))|5(?:112|2(?:0$_bf_$d|2[29]|[49]4)|3[1568]$_bf_$d|52[6-9]|7(?:0[01578]|1[017]|[23]7|4[047]|[5-7]$_bf_$d|8[78]|9[079]))|6(?:2(?:2[1245]|4[2-4])|39$_bf_$d|41[179]|5(?:[349]$_bf_$d|5[0-2])|7(?:0[017]|[13]$_bf_$d|22|44|55|67|88))|9(?:22[128]|3(?:2[0-4]|7$_bf_$d)|57[02569]|7(?:2[05-9]|3[37]|4$_bf_$d|60|7[2579]|87|9[07]))))$_bf_$d{4}\"},{\"i\":\"VE\",\"lbl\":\"Venezuela (Bolivarian Republic of)\",\"img\":\"ve.png\",\"code\":\"+58\",\"ex\":\"4121234567\",\"ptrn\":\"4(?:1[24-8]|2[46])$_bf_$d{7}\"},{\"i\":\"VN\",\"lbl\":\"Viet Nam\",\"img\":\"vn.png\",\"code\":\"+84\",\"ex\":\"912345678\",\"ptrn\":\"(?:5(?:2[238]|59)|89[689]|99[013-9])$_bf_$d{6}|(?:3$_bf_$d|5[689]|7[06-9]|8[1-8]|9[0-8])$_bf_$d{7}\"},{\"i\":\"VU\",\"lbl\":\"Vanuatu\",\"img\":\"vu.png\",\"code\":\"+678\",\"ex\":\"5912345\",\"ptrn\":\"(?:[58]$_bf_$d|7[013-7])$_bf_$d{5}\"},{\"i\":\"WF\",\"lbl\":\"Wallis and Futuna\",\"img\":\"wf.png\",\"code\":\"+681\",\"ex\":\"821234\",\"ptrn\":\"(?:72|8[23])$_bf_$d{4}\"},{\"i\":\"WS\",\"lbl\":\"Samoa\",\"img\":\"ws.png\",\"code\":\"+685\",\"ex\":\"7212345\",\"ptrn\":\"(?:7[1-35-7]|8(?:[3-7]|9$_bf_$d{3}))$_bf_$d{5}\"},{\"i\":\"YE\",\"lbl\":\"Yemen\",\"img\":\"ye.png\",\"code\":\"+967\",\"ex\":\"712345678\",\"ptrn\":\"7[0137]$_bf_$d{7}\"},{\"i\":\"ZA\",\"lbl\":\"South Africa\",\"img\":\"za.png\",\"code\":\"+27\",\"ex\":\"711234567\",\"ptrn\":\"(?:1(?:3492[0-25]|4495[0235]|549(?:20|5[01]))|4[34]492[01])$_bf_$d{3}|8[1-4]$_bf_$d{3,7}|(?:2[27]|47|54)4950$_bf_$d{3}|(?:1(?:049[2-4]|9[12]$_bf_$d$_bf_$d)|(?:6$_bf_$d|7[0-46-9])$_bf_$d{3}|8(?:5$_bf_$d{3}|7(?:08[67]|158|28[5-9]|310)))$_bf_$d{4}|(?:1[6-8]|28|3[2-69]|4[025689]|5[36-8])4920$_bf_$d{3}|(?:12|[2-5]1)492$_bf_$d{4}\"},{\"i\":\"ZM\",\"lbl\":\"Zambia\",\"img\":\"zm.png\",\"code\":\"+260\",\"ex\":\"955123456\",\"ptrn\":\"(?:7[679]|9[5-8])$_bf_$d{7}\"},{\"i\":\"ZW\",\"lbl\":\"Zimbabwe\",\"img\":\"zw.png\",\"code\":\"+263\",\"ex\":\"712345678\",\"ptrn\":\"7(?:[178]$_bf_$d|3[1-9])$_bf_$d{6}\"}],\"valid\":{},\"err\":{\"invalid\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u8bf7\\u8f93\\u5165\\u6709\\u6548\\u7684\\u7535\\u8bdd\\u53f7\\u7801<\\\/p>\",\"show\":true}},\"customClasses\":{},\"customAttributes\":{},\"fieldName\":\"phone-number-1-6\"},\"b1-7\":{\"typ\":\"file-up\",\"lbl\":\"File Upload\",\"btnTxt\":\"Attach File\",\"valid\":{},\"prefixIcn\":\"https:\\\/\\\/wellspcba.com\\\/wp-content\\\/plugins\\\/bit-form\\\/assets\\\/..\\\/static\\\/file-upload\\\/paperclip.svg\",\"err\":{\"maxSize\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u8d85\\u51fa\\u6700\\u5927\\u6587\\u4ef6\\u5927\\u5c0f\\u3002(\\u6700\\u5927\\uff1a1024MB)<\\\/p>\",\"show\":true},\"minFile\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u81f3\\u5c11\\u9700\\u8981 0 \\u4e2a\\u6587\\u4ef6<\\\/p>\",\"show\":true},\"maxFile\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u6700\\u591a\\u5141\\u8bb8 0 \\u4e2a\\u6587\\u4ef6<\\\/p>\",\"show\":true}},\"customClasses\":{},\"customAttributes\":{},\"config\":{\"multiple\":true,\"allowMaxSize\":true,\"showMaxSize\":true,\"maxSize\":\"1024\",\"sizeUnit\":\"MB\",\"isItTotalMax\":false,\"showSelectStatus\":true,\"fileSelectStatus\":\"No File Selected\",\"allowedFileType\":\"\",\"showFileList\":true,\"fileExistMsg\":\"A file allready exist\",\"showFilePreview\":true,\"showFileSize\":true,\"duplicateAllow\":false,\"accept\":\"\",\"minFile\":0,\"maxFile\":0},\"fieldName\":\"file-up-1-7\"},\"b1-8\":{\"typ\":\"textarea\",\"lbl\":\"Company\",\"ph\":\"\\u5360\\u4f4d\\u7b26...\",\"phHide\":true,\"valid\":{\"req\":true,\"reqShow\":true,\"reqPos\":\"after\"},\"err\":{\"req\":{\"dflt\":\"<p style=\\\"margin:0\\\">\\u6b64\\u5b57\\u6bb5\\u4e3a\\u5fc5\\u586b\\u9879<\\\/p>\",\"show\":true}},\"customClasses\":{},\"customAttributes\":{},\"fieldName\":\"textarea-1-8\"}},\"buttons\":\"\",\"fieldsKey\":{\"b1-1\":\"b1-1\",\"b1-2\":\"b1-2\",\"b1-3\":\"b1-3\",\"b1-5\":\"b1-5\",\"b1-6\":\"b1-6\",\"b1-7\":\"b1-7\",\"b1-8\":\"b1-8\"},\"file\":[\"b1-7\"],\"configs\":{\"bf_separator\":\"__bf__\"},\"formId\":1,\"appID\":\"bitforms_1\",\"GCLID\":false,\"assetUrl\":\"https:\\\/\\\/wellspcba.com\\\/wp-content\\\/plugins\\\/bit-form\\\/assets\",\"onfieldCondition\":false,\"smartTags\":{\"_bf_current_time\":\"2026-06-04 21:36:40\",\"_bf_admin_email\":\"249118627@qq.com\",\"_bf_date_default\":\"2026-06-05\",\"_bf_date.m\\\/d\\\/y\":\"06\\\/05\\\/26\",\"_bf_date.d\\\/m\\\/y\":\"05\\\/06\\\/26\",\"_bf_date.y\\\/m\\\/d\":\"26\\\/06\\\/05\",\"_bf_date.Y-m-d\":\"2026-06-05\",\"_bf_date.d-M, Y\":\"05-Jun, 2026\",\"_bf_time\":\"05:36\",\"_bf_weekday\":\"Sexta-feira\",\"_bf_http_referer_url\":\"\",\"_bf_ip_address\":\"216.73.216.103\",\"_bf_browser_name\":\"Bot\",\"_bf_operating_system\":\"\",\"_bf_random_digit\":\"6a21efe865e96\",\"_bf_user_id\":\"0\",\"_bf_user_first_name\":\" \",\"_bf_user_last_name\":\" \",\"_bf_user_display_name\":\" \",\"_bf_user_nice_name\":\" \",\"_bf_user_login_name\":\" \",\"_bf_user_email\":\" \",\"_bf_user_url\":\" \",\"_bf_current_user_role\":\" \",\"_bf_author_id\":\" \",\"_bf_author_display\":\" \",\"_bf_author_email\":\" \",\"_bf_site_title\":\"WELLS SMT&amp;PCBA\",\"_bf_site_description\":\"One stop PCBA OEM service\",\"_bf_site_url\":\"https:\\\/\\\/wellspcba.com\\\/pt\",\"_bf_wp_local_codes\":\"pt-PT\",\"_bf_separator\":\"__bf__\",\"_bf_post_id\":\"\",\"_bf_post_name\":\"\",\"_bf_post_title\":\"\",\"_bf_post_date\":\"\",\"_bf_post_modified_date\":\"\",\"_bf_post_url\":\"\",\"_bf_is_user_logged_in\":\"logged_out\",\"_bf_entry_id\":\"\",\"_bf_back_view\":\"https:\\\/\\\/wellspcba.com\\\/pt\\\/wp-json\\\/wp\\\/v2\\\/posts\\\/1676\"},\"paymentCallbackUrl\":\"https:\\\/\\\/wellspcba.com\\\/pt\\\/wp-json\\\/bitform\\\/v1\\\/payments\\\/razorpay\",\"gRecaptchaSiteKey\":null,\"gRecaptchaVersion\":null,\"turnstileSiteKey\":null,\"hCaptchaSiteKey\":null}\n        };\n      }<\/script>","protected":false},"excerpt":{"rendered":"<p>The PCB surface finish you specify on your fabrication drawing is one of the few decisions that simultaneously affects soldering yield, shelf life, high-frequency signal integrity, regulatory compliance, and unit cost. Engineers who treat it as an afterthought \u2014 accepting whatever the factory defaults to \u2014 routinely encounter tombstoning on fine-pitch passives, voided BGA joints, [&hellip;]<\/p>","protected":false},"author":2,"featured_media":1679,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/posts\/1676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/comments?post=1676"}],"version-history":[{"count":2,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/posts\/1676\/revisions"}],"predecessor-version":[{"id":1685,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/posts\/1676\/revisions\/1685"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/media\/1679"}],"wp:attachment":[{"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/media?parent=1676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/categories?post=1676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wellspcba.com\/pt\/wp-json\/wp\/v2\/tags?post=1676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}