{"id":21816,"date":"2026-01-13T16:52:52","date_gmt":"2026-01-13T08:52:52","guid":{"rendered":"https:\/\/www.elepcb.com\/?p=21816"},"modified":"2026-01-13T16:52:52","modified_gmt":"2026-01-13T08:52:52","slug":"gold-finger-pcb","status":"publish","type":"post","link":"https:\/\/www.elepcb.com\/it\/blog\/gold-finger-pcb\/","title":{"rendered":"PCB con dito d'oro: quando usarlo, processo di placcatura e guida ai costi"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"21816\" class=\"elementor elementor-21816\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-59efb455 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"59efb455\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-31117e29\" data-id=\"31117e29\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-34edcfc0 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"34edcfc0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__34edcfc0\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__34edcfc0\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__34edcfc0\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-791d4b63 elementor-widget elementor-widget-text-editor\" data-id=\"791d4b63\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"MMJ3dYqfMo488CxSgojc9hJ2nxR\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnzwWQ93rSlNWaDOzmxWNHbg\">\n<div data-page-id=\"SN2QdUsRfo9ptVxuu01cmMU6nCK\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"PjvLdozttokd6JxbqMlck9o0ngg\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnD6GQVSvuMfvrKwaFEBoavd\">\n<div data-page-id=\"IvVMdpqGXoW5mAx2lnEcTBVanze\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-WPYWdY2xOo66vWxlZDUchLMWnCc\">\n<div data-page-id=\"A5AldwZDtoPcSgxUuyfcA5WRnNf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-Qi4JdNEs7ooXzexWItFcKPLMnwe\">\n<div data-page-id=\"W0NLdprAJoBJO7xxJjWcKNxVneb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcngYZVqZDy4LgfSfF8s5haeh\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnjtx7NbCQ1Ki4arDshpR2Uc\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnjtx7NbCQ1Ki4arDshpR2Uc\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-TRkadMuXIoQixpxQZUUcBYTbnmg\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-CYzidwIMxoeeQ2x0rHRcIx62nPc\">You&#8217;ve probably seen the narrow gold strips on computer ports or game console cartridges. These are known as <em><strong>gold fingers <\/strong><\/em>and are used to transmit signals. Gold finger PCBs are commonly found in scenarios where frequent insertion and removal are required. However, gold is expensive, so not every PCB needs gold fingers.<\/div>\n<div class=\"ace-line ace-line old-record-id-OArAdlixXocCpvxumjoc5wxFnWe\">Imagine you are designing a PCB interface with an edge connector. The product might be plugged in a few times, but not as frequently as memory modules. Here lies a seemingly simple question: Should gold fingers be included?<\/div>\n<div class=\"ace-line ace-line old-record-id-MjaYdbrezobHcUxPonUcrpSHnKe\">This article will explain what gold fingers on PCBs are and when they are needed. It will also clarify their <strong>definition, plating methods, thickness requirements, common defects<\/strong> and more. This will help you to make informed decisions that balance performance, cost and reliability.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6598f962 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6598f962\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-18217549\" data-id=\"18217549\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b870758 elementor-widget elementor-widget-spacer\" data-id=\"b870758\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2b53cd9b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2b53cd9b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-71908f17\" data-id=\"71908f17\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1a4fa2ec elementor-widget elementor-widget-heading\" data-id=\"1a4fa2ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>What Is a Gold Finger PCB?<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1ed85fa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ed85fa\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-921a683\" data-id=\"921a683\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2094965 elementor-widget elementor-widget-text-editor\" data-id=\"2094965\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"PjvLdozttokd6JxbqMlck9o0ngg\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcn9rWBNE0z7cGNNkCj3Vewue\">\n<div data-page-id=\"IvVMdpqGXoW5mAx2lnEcTBVanze\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-CUrldvH4lo98zkxV4rhcyjfHnWg\">\n<div data-page-id=\"A5AldwZDtoPcSgxUuyfcA5WRnNf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-IZV1dOfeRov4Ffx357rcuRf1nIg\">\n<div data-page-id=\"W0NLdprAJoBJO7xxJjWcKNxVneb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcn1sFD6Cz2Gf5Xv3S33USQLb\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnKOdPQO42f3n7IOrCrWi2Fc\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcn3f9pSZlIn9QMW5ydGoKIKg\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnmjaXUVu8adRPwuOvlFdH3g\">Gold Fingers PCBs are a prime example of a PCB that is specifically designed to increase its reliability by providing the <span style=\"color: #008000;\">physical (mechanical) and electrical connections<\/span> to card slot connectors or edge connector contacts. Gold finger PCBs typically consist of a group of gold-plated copper pads placed at the edge of the PCB. The pads are usually designed to be compatible with card-edge sockets or spring-loaded connector contacts.<\/div>\n<div class=\"ace-line ace-line old-record-id-OMwMdymXwoDcRHx41uocymGonGe\">Gold finger interfaces are used in detachable, modular, and high-end electronic systems. The nature of gold finger PCBs, undergoing <strong>multiple insertions<\/strong>, makes they very likely to experience various environmental stresses and thus require specific controlled material choices, chemical plating, mechanical design and gold thickness in order to reach their maximum potential.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0584293 elementor-widget elementor-widget-image\" data-id=\"0584293\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"759\" height=\"304\" src=\"https:\/\/www.elepcb.com\/wp-content\/uploads\/2026\/01\/gold-finger-materials.png\" class=\"attachment-large size-large wp-image-21818\" alt=\"gold finger materials\" srcset=\"https:\/\/www.elepcb.com\/wp-content\/uploads\/2026\/01\/gold-finger-materials.png 759w, https:\/\/www.elepcb.com\/wp-content\/uploads\/2026\/01\/gold-finger-materials-300x120.png 300w, https:\/\/www.elepcb.com\/wp-content\/uploads\/2026\/01\/gold-finger-materials-18x7.png 18w\" sizes=\"(max-width: 759px) 100vw, 759px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-044fb78 elementor-widget elementor-widget-text-editor\" data-id=\"044fb78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<h3 class=\"heading-3 ace-line old-record-id-doxcnnqYf6KLNvyFfjB2wOFafGh\"><strong>Composition of Gold Fingers<\/strong><\/h3>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-doxcnnWvvvTp2Um0JFdEY5QVjYe\" data-list=\"bullet\">\n<div><strong><a href=\"https:\/\/www.elepcb.com\/pcb-products\/ele-copper-pcb-board\/\">Copper<\/a> layer:<\/strong> This layer is a low-resistivity base conductor.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-doxcnqmNsOR0iRXGIcijvaglqDh\" data-list=\"bullet\">\n<div><strong>Nickel barrier layer:<\/strong> Prevents migration of copper into the gold layer, improves overall hardness of the gold finger, and allows for solid component mounting.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-doxcnPRybodLjCfVaEXBZOCQigb\" data-list=\"bullet\">\n<div><strong>Gold contact layer:<\/strong> Provides <a href=\"https:\/\/www.elepcb.com\/blog\/pcb-corrosion-issues\/\">corrosion<\/a>-resistant qualities to the gold finger, maintains consistent contact resistance over extreme temperatures, and provides a smooth mating surface for connectors.<\/div>\n<\/li>\n<\/ul>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c8f480 elementor-widget elementor-widget-heading\" data-id=\"0c8f480\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>When Do You Actually Need Gold Fingers on a PCB?<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8dc7d95 elementor-widget elementor-widget-text-editor\" data-id=\"8dc7d95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-SM1RdqCjnokYFyxwomNcUqLYnOh\">The necessity of gold fingers for a PCB depends on the method of electrical connections used during its entire service life. Gold fingers are only necessary when<span style=\"color: #008000;\"> mechanical wear, contact reliability and long-term stability<\/span> are essential requirements. If you&#8217;re unsure, remember this: if the <strong>PCB needs to keep its electrical connection steady after being put in and taken out many times<\/strong>, gold fingers are usually the right choice.<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0758790 elementor-widget elementor-widget-text-editor\" data-id=\"0758790\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"true\">\n<h3 class=\"heading-3 ace-line old-record-id-Bq9pdJxlaodTpYxGWTdcdVmanSb\"><strong>Typical Applications That Truly Require Gold Fingers<\/strong><\/h3>\n<div class=\"ace-line ace-line old-record-id-GAwfdbL3yolnntxYuImcH2atnif\">These applications have one thing in common: <span style=\"color: #008000;\">reliable edge connector contacts<\/span> are essential.<\/div>\n<ul>\n<li class=\"ace-line ace-line old-record-id-G5CndOJEjoLsDwxpsnXcVX7DnQc\"><strong>Memory modules, graphics cards, <\/strong><strong>PCIe<\/strong><strong> and M.2 boards: <\/strong>These circuit boards are designed specifically for standard edge connectors, anticipating repeated insertion and removal, and sometimes even reinstallation. Gold fingers provide:<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-E3Lgdz6c0o0oP7xySo8cIjRwneg\" data-list=\"bullet\">\n<div>Excellent wear resistance<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-HcEZdkJerobDL3xu6tFcHR0HnTE\" data-list=\"bullet\">\n<div>Consistent performance even after repeated mating cycles<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-G759d6cQyoAPySxIUJqcoLAinOf\" data-list=\"bullet\">\n<div>Low and stable contact resistance<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28df573 elementor-widget elementor-widget-text-editor\" data-id=\"28df573\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<ul>\n<li class=\"ace-line ace-line old-record-id-SqXSdpXXioEUbdxkVOHcDUE2nEh\"><strong>Industrial control plug-in cards: <\/strong><a href=\"https:\/\/www.elepcb.com\/applications\/pcb-for-industrial-equipments\/\">Industrial<\/a> automation systems usually use modular plug-in cards to carry out input\/output, motion control, or communication tasks. Although these cards are not usually removed on a daily basis, they must maintain stable and long-lasting functionality in high-temperature, dusty environments.<\/li>\n<li class=\"ace-line ace-line old-record-id-PKSydqaENoxeRLxbDZlcblDBnUc\"><strong>High-reliability backplane systems: <\/strong>In <a href=\"https:\/\/www.elepcb.com\/applications\/pcb-for-telecommunication-systems\/\">telecommunications<\/a>, networking and industrial servers, backplanes rely on multiple edge connections operating simultaneously. The gold finger helps to ensure the stable operation of multiple connections in such situations.<\/li>\n<\/ul>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a33bac1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a33bac1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9d1303b\" data-id=\"9d1303b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c01d68b elementor-widget elementor-widget-spacer\" data-id=\"c01d68b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-423dd15 elementor-widget elementor-widget-heading\" data-id=\"423dd15\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>Gold Plating Methods For Gold Finger PCBs<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e66416d elementor-widget elementor-widget-text-editor\" data-id=\"e66416d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnOOtG6jVJVpZqYJT0WNUEiS\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnzJHwUA1nFAdlMl0sJDgxhh\">The gold plating processes for Gold finger PCBs include:<\/div>\n<h3 class=\"heading-3 ace-line old-record-id-doxcn9IGHghRv8xgqsaS5xZK2zb\"><strong>1. Electroless Nickel Immersion Gold (ENIG)<\/strong><\/h3>\n<div class=\"ace-line ace-line old-record-id-doxcn4ehc0My7AkwkZMqKTz22pb\">Electroless <a href=\"https:\/\/www.elepcb.com\/blog\/enepig\/\">Nickel Immersion Gold (ENIG)<\/a> is an interface material that is made up of a gold layer plating onto a base layer of electroless nickel. The primary reason that gold was chosen is that it protects the nickel base layer and does not act as a wear surface. Due to the fact that the gold does not act as a wear surface, the mechanical degradation of the connector&#8217;s finger surface of ENIG connectors will occur at a faster rate, and this occurs because of the friction generated by the repeated contacts.<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b9f056 elementor-widget elementor-widget-text-editor\" data-id=\"6b9f056\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<h3 class=\"heading-3 ace-line old-record-id-doxcnIlA8TsfHCZ34dNZ7Tdw0mc\"><strong>2. Electroless Nickel, Electroless Palladium, Immersion Gold (ENEPIG)<\/strong><\/h3>\n<div class=\"ace-line ace-line old-record-id-doxcnD4gCH3ua0SDltAAUta1ose\">ENEPIG is very similar to ENIG, except ENEPIG includes a layer of palladium in addition to the nickel and gold layers. The addition of the palladium layer inhibits the oxidation of the nickel and provides a greater surface stability than the ENIG layer. Compared to ENIG, ENEPIG also has better corrosion protection and solderability characteristics. However, since the gold layer in ENEPIG is so thin, the use of ENEPIG as a high-cycle application (i.e., edge connectors) is limited.<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fa30cf elementor-widget elementor-widget-text-editor\" data-id=\"8fa30cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<h3 class=\"heading-3 ace-line old-record-id-doxcncSWo2AQVx6IfawIhDn065b\"><strong>3. Electroplated Hard Gold<\/strong><\/h3>\n<div class=\"ace-line ace-line old-record-id-doxcnvDeTY2cSI3rFPMaqz6OuDc\">Hard Gold is an electroplated hard gold that is used as a finish to a nickel-plated connector. There are many advantages to using Hard Gold versus other types of gold, such as a large number of cycles before failure, high hardness, low wear rate and a controlled thickness of the gold layer that can be optimized to provide a trade-off between cost and reliability.<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94321af elementor-widget elementor-widget-text-editor\" data-id=\"94321af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<h3 class=\"heading-3 ace-line old-record-id-doxcnJEsB44nw6aY25eZLEn22le\"><strong>4. Selective Gold Plating<\/strong><\/h3>\n<div class=\"ace-line ace-line old-record-id-doxcns2Q95SG8hvYY94hpLbmXqW\">Selective gold Plating is a technique for applying gold plating to a connector so that only the edge of the connector is plated with gold. The selective plating process significantly reduces the amount of gold required while maintaining all the performance attributes of the connector.<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba4bbb2 elementor-widget elementor-widget-text-editor\" data-id=\"ba4bbb2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<h3 class=\"heading-3 ace-line old-record-id-B8tedOktlon3IMxmfNicJglMnqb\"><strong>Gold Plating Process Comparison<\/strong><\/h3>\n<div class=\"ace-line ace-line old-record-id-FONmdmiU2oGT1Gx5ojvcdXAWnOd\">When choosing a gold plating process for <a href=\"https:\/\/www.elepcb.com\/blog\/printed-circuit-board-types-and-their-uses\/\">circuit board<\/a> gold fingers, several factors must be considered, such as insertion\/removal cycles, reliability and cost. The following table compares several gold plating methods:<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4bf172 elementor-widget elementor-widget-text-editor\" data-id=\"f4bf172\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table><colgroup><col width=\"105\" \/><col width=\"105\" \/><col width=\"105\" \/><col width=\"105\" \/><col width=\"105\" \/><col width=\"105\" \/><col width=\"105\" \/><col width=\"105\" \/><\/colgroup>\n<tbody>\n<tr>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Plating Process<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Typical Gold Thickness<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Wear Resistance<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Contact Stability<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Solderability<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Relative Cost<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Insertion Cycle Capability<\/td>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3; font-size: 14pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #15205e; color: #ffffff; text-align: center;\">Recommended Applications<\/td>\n<\/tr>\n<tr>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3 #dee0e3; font-size: 11pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #b56408; color: #ffffff;\">Electroplated Hard Gold<\/td>\n<td>30\u201350 \u00b5in<\/td>\n<td>Very High<\/td>\n<td>Excellent<\/td>\n<td>Limited<\/td>\n<td>High<\/td>\n<td>Thousands of cycles<\/td>\n<td>High insertion\/removal connectors (PCIe, memory modules, industrial plug-in cards)<\/td>\n<\/tr>\n<tr>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3 #dee0e3; font-size: 11pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #b56408; color: #ffffff;\">Selective Hard Gold<\/td>\n<td>30\u201350 \u00b5in (localized)<\/td>\n<td>High<\/td>\n<td>Excellent<\/td>\n<td>Limited<\/td>\n<td>Medium<\/td>\n<td>High (only in plated areas)<\/td>\n<td>Cost-sensitive designs with localized edge contacts<\/td>\n<\/tr>\n<tr>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3 #dee0e3; font-size: 11pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #b56408; color: #ffffff;\">ENIG (Electroless Nickel Immersion Gold)<\/td>\n<td>&lt; 5 \u00b5in<\/td>\n<td>Low<\/td>\n<td>Moderate<\/td>\n<td>Excellent<\/td>\n<td>Low<\/td>\n<td>Limited cycles<\/td>\n<td>Solder-heavy assemblies with minimal mechanical wear<\/td>\n<\/tr>\n<tr>\n<td style=\"white-space-collapse: preserve; border-color: #b1b7c0 #b1b7c0 #dee0e3 #dee0e3; font-size: 11pt; font-weight: bold; vertical-align: middle; word-break: break-word; overflow-wrap: break-word; background-color: #b56408; color: #ffffff;\">ENEPIG<\/td>\n<td>&lt; 5 \u00b5in<\/td>\n<td>Moderate<\/td>\n<td>High<\/td>\n<td>Excellent<\/td>\n<td>Medium\u2013High<\/td>\n<td>Moderate<\/td>\n<td>Mixed soldering and contact reliability requirements; harsh or corrosive environments<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c09ec5 elementor-widget elementor-widget-text-editor\" data-id=\"2c09ec5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"A5AldwZDtoPcSgxUuyfcA5WRnNf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"W0NLdprAJoBJO7xxJjWcKNxVneb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnVjCzj6tkdxJIOPKKcYBYIb\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnbn6mHjTelMtiM0QGGKmxUd\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-XAPCdqTLno14alxouJacHJEAnkh\">For PCBs involving repeated insertion or critical edge-connector reliability, hard gold (or selective hard gold) is the safest choice. However, if wear is minimal and solderability or cost is the priority, ENIG or ENEPIG are usually sufficient.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cb39f80 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cb39f80\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-03894e7\" data-id=\"03894e7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d7c07a3 elementor-widget elementor-widget-spacer\" data-id=\"d7c07a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6ec1e0 elementor-widget elementor-widget-heading\" data-id=\"d6ec1e0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>Gold Finger Thickness: How Much Is Enough?<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4b41b8 elementor-widget elementor-widget-text-editor\" data-id=\"a4b41b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnS4ueh3J050UkywlBcY8znd\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-XWAMdlyHco7SaqxH9VPcoQexnmg\">The thickness of the gold fingers directly affects their wear resistance and contact reliability, but thicker does not necessarily mean better. The choice of thickness should actually be based on insertion cycles, reliability risks and cost.<\/div>\n<div class=\"ace-line ace-line old-record-id-AeN1dk6Ffo4THtxnyizcKB7InQg\">Industry standards such as <strong>IPC-4556 \/ IPC-4556A<\/strong> (hard gold) and <strong>IPC-4552<\/strong> (ENIG), together with <strong>IPC-6012<\/strong>, define minimum requirements for plating quality and thickness. However, <strong>the real design decision lies in choosing the right thickness range for the application<\/strong>.<\/div>\n<div class=\"ace-line ace-line old-record-id-DnbUdZTt1obqeFxR5sucAW6OnQh\">In real-world PCB manufacturing, gold finger thickness typically falls into three practical categories:<\/div>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-MsvedRny7oyLYzxcpHOcek4Wnmb\" data-list=\"bullet\">\n<div><strong>&lt; 5 \u00b5in (ENIG \/ ENEPIG)&lt; 5 \u00b5in<\/strong><\/div>\n<\/li>\n<\/ul>\n<div class=\"ace-line ace-line old-record-id-IOXRdcqHVopJQyx1BKTcwP0fnae\" style=\"padding-left: 40px;\">This thickness is designed for solderability and corrosion protection, <strong>not for mechanical wear<\/strong>. Suitable only for very limited or one-time insertion.<\/div>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-D50ddZWCko1u02xuV94c7HE1nnf\" data-list=\"bullet\">\n<div><strong>10\u201315 \u00b5in (light hard gold)<\/strong><\/div>\n<\/li>\n<\/ul>\n<div class=\"ace-line ace-line old-record-id-VSRbd9Xe6oubDAxQURLcXfjlnRb\" style=\"padding-left: 40px;\">Low insertion counts are sometimes the case, but a small wear margin is offered and critical edge connectors are rarely recommended.<\/div>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-CfB3dARE2oyq2Gx81j4cf0pFn9b\" data-list=\"bullet\">\n<div><strong>30\u201350 \u00b5in (standard hard gold)<\/strong><\/div>\n<\/li>\n<\/ul>\n<div class=\"ace-line ace-line old-record-id-SkKuduYYsoJDNlx2pXecAADEnbg\" style=\"padding-left: 40px;\">This is the industry standard for edge connectors that require reliable and repeated insertion, such as PCIe, memory modules and industrial plug-in cards.<\/div>\n<div class=\"ace-line ace-line old-record-id-BvZedpiuToxOWKxonLSckdPDnqe\">In most cases, hard gold with a thickness of 30\u201350 \u00b5in is selected for frequent or critical insertions. However, for cost-sensitive designs employing localised contact, it should only be used where necessary.<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e038eb7 elementor-widget elementor-widget-spacer\" data-id=\"e038eb7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a7d6279 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a7d6279\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5e05198\" data-id=\"5e05198\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3ea3dfb elementor-widget elementor-widget-heading\" data-id=\"3ea3dfb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><strong>Design Considerations To Improve the Reliability of Gold Finger PCBs<\/strong><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2582d42 elementor-widget elementor-widget-text-editor\" data-id=\"2582d42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"IvVMdpqGXoW5mAx2lnEcTBVanze\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnTlK6U600eYqHBn2DVDHiBh\">\n<div data-page-id=\"A5AldwZDtoPcSgxUuyfcA5WRnNf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-HjjDdeEfGopFf2x76yZc3vLFnWd\">\n<div data-page-id=\"W0NLdprAJoBJO7xxJjWcKNxVneb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-EV6OdptWRoDrS5xrxexcVrkLnHd\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcn7Xte6fhX9TZLibWHE8vtWb\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnOFFjUmuwitLjUo53pQIhsb\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-AzdOdfzAXoMFfCxE3Gnc7VDJncc\">\n<div>\n<div>Once you have finalized the design of the gold fingers on the PCB, the following design parameters are required for a reliable gold finger PCB:<\/div>\n<div>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-JaB4dznsloSR4ExctJXc0gQKn4g\" data-list=\"bullet\">\n<div>Depending upon the expected insertion cycles, the thickness of gold should be mentioned.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-W07EdOCtLoGEASxCOJ8cUz1anif\" data-list=\"bullet\">\n<div><a href=\"https:\/\/www.elepcb.com\/blog\/pcb-solder-mask\/\">Solder mask<\/a> clearance should be preserved from the edges of the finger.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-KkLCdsA0yoMtr3xNUg3c2cgdnBb\" data-list=\"bullet\">\n<div>To prevent cracking under stress, vias near edge connectors should be kept away.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-GMrVdfOgno1Sp5x6skLchv8bnhd\" data-list=\"bullet\">\n<div>Edge beveling of <strong>30 to 40 degrees<\/strong> should be used to decrease connector wear.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-ZQ76dSSR6oMfEkx2NdGcDEU7nqe\" data-list=\"bullet\">\n<div>Finger dimension, spacing, and zones of plating should be mentioned clearly in the drawings of fabrication.<\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2111e52e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2111e52e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-668b01c0\" data-id=\"668b01c0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d24bc64 elementor-widget elementor-widget-spacer\" data-id=\"d24bc64\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37342720 elementor-widget elementor-widget-heading\" data-id=\"37342720\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>Common Gold Finger PCB Problems<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e7e1977 elementor-widget elementor-widget-text-editor\" data-id=\"e7e1977\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"A5AldwZDtoPcSgxUuyfcA5WRnNf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-CfRodbvorozSB9xLeescRYHrnBb\">\n<div data-page-id=\"W0NLdprAJoBJO7xxJjWcKNxVneb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnMABE7jR21se56ufMJP19eg\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnWOgT3vIIkNjfZkASrlkBSG\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnAJ5JwvKY8k3voqlXgZf03d\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnlMIbv9GVVCF7HQ0lXtgDrc\">Some problems occur with gold-finger PCBs because of the wrong plating process used in making the gold-finger, an inadequate amount of gold applied to the gold-finger, or poorly controlled manufacturing (process control). The most common problems found in gold-finger PCBs are as follows:<\/div>\n<div class=\"ace-line ace-line old-record-id-doxcnegChK5uzn7dJel4MQ9m5Lb\">1) <strong>Nickel Corrosion:<\/strong> Nickel easily corrodes and oxidizes when exposed, which can cause unbalanced electrical characteristics of the gold-fingers and may result in decreased reliability of the gold-finger PCBs over long periods of time.<\/div>\n<div class=\"ace-line ace-line old-record-id-doxcnTL6xIk19uz86hzFJ1WnlAh\">2) <strong>Surface Contamination:<\/strong> Solder mask residue, flux residues, or other contaminants on the surface of the gold fingers can create barriers that prevent effective pressure transfer between mating surfaces and hinder electrical current flow.<\/div>\n<div class=\"ace-line ace-line old-record-id-doxcn9unPJu9KWxF1jQZLerTRke\">3) <strong>Gold Wear-Through: <\/strong>Repeatedly inserting and removing gold finger PCBs into connectors wears down the gold layer, exposing the nickel layer underneath, and causing intermittent connection characteristics and\/or increased contact resistance.<\/div>\n<div class=\"ace-line ace-line old-record-id-doxcntks2LT0vQXtn2I455mkd0d\">4)<strong> Inadequate Adhesion: <\/strong>Failure to follow proper plating techniques or inadequate surface preparation before plating may result in separation of the gold from the nickel during cyclic mechanical stress as the gold splits or flakes off.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22189ec elementor-widget elementor-widget-spacer\" data-id=\"22189ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-168425f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"168425f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-08f2d94\" data-id=\"08f2d94\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a254226 elementor-widget elementor-widget-heading\" data-id=\"a254226\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>Conclusion<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-624328b elementor-widget elementor-widget-text-editor\" data-id=\"624328b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"A5AldwZDtoPcSgxUuyfcA5WRnNf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-CfRodbvorozSB9xLeescRYHrnBb\">\n<div data-page-id=\"W0NLdprAJoBJO7xxJjWcKNxVneb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnMABE7jR21se56ufMJP19eg\">\n<div data-page-id=\"J2QMdavk0oD5sPxTbU8cEnVUnzd\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnWOgT3vIIkNjfZkASrlkBSG\">\n<div data-page-id=\"DFOfdWaHroRYmVxVW0acvcpVn7d\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-doxcnAJ5JwvKY8k3voqlXgZf03d\">\n<div data-page-id=\"AxBJd9tDooJT9BxmRHLc2n0CnGj\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-AerddF1rMoHgGpxQVwYcbeIUndc\">Gold finger PCBs offer superior physical and electrical connections due to improved technology used in today\u2019s electronic devices. Although PCB gold fingers are a powerful tool, they are not always necessary. In many cases, alternatives such as pin sockets, <a href=\"https:\/\/www.elepcb.com\/blog\/cable-assembly\/\"><strong>cable assemblies<\/strong><\/a> or <strong>soldered edge connections<\/strong> can offer the same level of reliability at a lower cost.<\/div>\n<div class=\"ace-line ace-line old-record-id-A7ozd5MOdoM5wcx9Q0mcpsYFngc\">Whether or not to use gold fingers depends on factors such as the number of insertion cycles, mechanical wear, soldering requirements and critical system reliability. By conducting a thorough evaluation, you can optimise performance, cost and long-term reliability, ensuring that your PCB design is both practical and efficient.<\/div>\n<div class=\"ace-line ace-line old-record-id-AMiVdzRoqo6uerxxxLjcv2rxnWe\">If you have any further questions about your <a href=\"https:\/\/www.elepcb.com\/pcb-layout-design-process-and-guidelines\/\">circuit board product design<\/a>, please do not hesitate to <a href=\"https:\/\/www.elepcb.com\/contact-us\/\"><em><strong>contact us<\/strong><\/em><\/a>. We can provide design recommendations and subsequent manufacturing support.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b75ddae elementor-widget elementor-widget-spacer\" data-id=\"b75ddae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-688ba04c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"688ba04c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3c2fc7ea\" data-id=\"3c2fc7ea\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-00fccbf elementor-widget elementor-widget-heading\" data-id=\"00fccbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>FAQs<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f9f4f7b elementor-widget elementor-widget-toggle\" data-id=\"6f9f4f7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"toggle.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1871\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1871\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Q1: Why is gold used for PCB edge fingers?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1871\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1871\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<p>A1: Since the gold element doesn\u2019t oxidize, it continues to keep similar contact resistance and withstand continuous mechanical interaction, and it is usually used in PCB Edge Fingers.<\/p>\n<\/div>\n<\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1872\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1872\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Q2: Can ENIG substitute hard gold for edge connectors?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1872\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1872\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-BWQ0dJKPTovPhYx6XTfc9xMAngc\">\n<div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-ZGjidQpZuouEMuxnruBcR4Ujndg\">\n<p>A2: It can replace hard gold for edge connectors, but only for the low-cycle applications, as ENIG has short wear resistance.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1873\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1873\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Q3: What inspection processes verify the quality of gold finger plating?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1873\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1873\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\">\n<div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\">A3: Techniques like X-ray fluorescence for measuring thickness, testing of contact resistance to ensure performance and electric stability after plating, and optical microscopy for surface condition are used to validate the quality of gold finger plating.<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1874\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1874\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Q4: How much does a gold finger PCB cost compared to a standard PCB?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1874\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1874\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\">\n<div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\">\n<div class=\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\">A4: A gold finger PCB typically costs <strong>significantly more than a standard ENIG-finished PCB<\/strong>, often several times higher, depending on gold thickness, plated area, and volume.<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Q1: Why is gold used for PCB edge fingers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<div data-page-id=\\\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div data-page-id=\\\"PzvadCyLxoGC6axfsi0cBB2BnWf\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<p>A1: Since the gold element doesn\\u2019t oxidize, it continues to keep similar contact resistance and withstand continuous mechanical interaction, and it is usually used in PCB Edge Fingers.<\\\/p>\\n<\\\/div>\\n<\\\/div>\"}},{\"@type\":\"Question\",\"name\":\"Q2: Can ENIG substitute hard gold for edge connectors?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<div data-page-id=\\\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div class=\\\"ace-line ace-line old-record-id-BWQ0dJKPTovPhYx6XTfc9xMAngc\\\">\\n<div data-page-id=\\\"PzvadCyLxoGC6axfsi0cBB2BnWf\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div class=\\\"ace-line ace-line old-record-id-ZGjidQpZuouEMuxnruBcR4Ujndg\\\">\\n<p>A2: It can replace hard gold for edge connectors, but only for the low-cycle applications, as ENIG has short wear resistance.<\\\/p>\\n<\\\/div>\\n<\\\/div>\\n<\\\/div>\\n<\\\/div>\"}},{\"@type\":\"Question\",\"name\":\"Q3: What inspection processes verify the quality of gold finger plating?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<div data-page-id=\\\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div class=\\\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\\\">\\n<div data-page-id=\\\"PzvadCyLxoGC6axfsi0cBB2BnWf\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div class=\\\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\\\">A3: Techniques like X-ray fluorescence for measuring thickness, testing of contact resistance to ensure performance and electric stability after plating, and optical microscopy for surface condition are used to validate the quality of gold finger plating.<\\\/div>\\n<\\\/div>\\n<\\\/div>\\n<\\\/div>\"}},{\"@type\":\"Question\",\"name\":\"Q4: How much does a gold finger PCB cost compared to a standard PCB?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<div data-page-id=\\\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div class=\\\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\\\">\\n<div data-page-id=\\\"PzvadCyLxoGC6axfsi0cBB2BnWf\\\" data-lark-html-role=\\\"root\\\" data-docx-has-block-data=\\\"false\\\">\\n<div class=\\\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\\\">A4: A gold finger PCB typically costs <strong>significantly more than a standard ENIG-finished PCB<\\\/strong>, often several times higher, depending on gold thickness, plated area, and volume.<\\\/div>\\n<\\\/div>\\n<\\\/div>\\n<\\\/div>\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-72b68d12 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class=\"elementor-field elementor-size-sm  elementor-field-textual\" pattern=\"[0-9()#&amp;+*-=.]+\" title=\"Csak a sz\u00e1mok \u00e9s telefonkarakterek (#, -, * stb.) fogadhat\u00f3k el.\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-checkbox elementor-field-group elementor-column elementor-field-group-field_c168eb1 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_c168eb1\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tI am interested in (select all that apply)\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<div class=\"elementor-field-subgroup  elementor-subgroup-inline\"><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Rigid PCBs\" id=\"form-field-field_c168eb1-0\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-0\">Rigid PCBs<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Flexible Printed Circuit Boards\" id=\"form-field-field_c168eb1-1\" 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id=\"form-field-field_c168eb1-5\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-5\">Rigid-Flex<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Ceramic Printed Circuit Boards\" id=\"form-field-field_c168eb1-6\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-6\">Ceramic Printed Circuit Boards<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Aluminum Printed Circuit Boards\" id=\"form-field-field_c168eb1-7\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-7\">Aluminum Printed Circuit Boards<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Copper Core\" id=\"form-field-field_c168eb1-8\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-8\">Copper Core<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"IC Substrates &amp; Interposer\" id=\"form-field-field_c168eb1-9\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-9\">IC Substrates & Interposer<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"High TG PCBs\" id=\"form-field-field_c168eb1-10\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-10\">High TG PCBs<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Heavy Copper\" id=\"form-field-field_c168eb1-11\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-11\">Heavy Copper<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"PCB Assembly\" id=\"form-field-field_c168eb1-12\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-12\">PCB Assembly<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Components Sourcing\" id=\"form-field-field_c168eb1-13\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-13\">Components Sourcing<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Other\" id=\"form-field-field_c168eb1-14\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-14\">Other<\/label><\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-upload elementor-field-group elementor-column elementor-field-group-field_2cea676 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_2cea676\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tUpload Your Files (Optional)\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input type=\"file\" name=\"form_fields[field_2cea676]\" id=\"form-field-field_2cea676\" class=\"elementor-field elementor-size-sm  elementor-upload-field\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-field_9ceb2c8 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_9ceb2c8\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[field_9ceb2c8]\" id=\"form-field-field_9ceb2c8\" rows=\"4\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-123957a9\" data-id=\"123957a9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Table of Contents You&#8217;ve probably seen the narrow gold strips on computer ports or game console cartridges. These are known as gold fingers and are used to transmit signals. Gold finger PCBs are commonly found in scenarios where frequent insertion and removal are required. However, gold is expensive, so not every PCB needs gold fingers. [&hellip;]<\/p>\n","protected":false},"author":26,"featured_media":21817,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[134],"class_list":["post-21816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-pcb-design"],"_links":{"self":[{"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts\/21816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/comments?post=21816"}],"version-history":[{"count":13,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts\/21816\/revisions"}],"predecessor-version":[{"id":21831,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts\/21816\/revisions\/21831"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/media\/21817"}],"wp:attachment":[{"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/media?parent=21816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/categories?post=21816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/tags?post=21816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}