{"id":12576,"date":"2024-07-18T18:23:35","date_gmt":"2024-07-18T10:23:35","guid":{"rendered":"http:\/\/www.elepcb.com\/?p=12576"},"modified":"2025-03-12T11:12:06","modified_gmt":"2025-03-12T03:12:06","slug":"hot-air-solder-leveling","status":"publish","type":"post","link":"https:\/\/www.elepcb.com\/it\/blog\/hot-air-solder-leveling\/","title":{"rendered":"La guida definitiva al livellamento a saldare ad aria calda (HASL)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"12576\" class=\"elementor elementor-12576\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6eaee4b2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6eaee4b2\" 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-49134060\" data-id=\"49134060\" 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-7eb0c77b elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"7eb0c77b\" 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__7eb0c77b\" 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__7eb0c77b\" 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__7eb0c77b\" 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-5f1c57e2 elementor-widget elementor-widget-text-editor\" data-id=\"5f1c57e2\" 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=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"ZzVndCoYjoIIzhx50mjcQDcLnue\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"SKC7dw5mIo9QKNxSgwPcggXAnRh\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"BaAqdv8UmonE8ZxHyouc2xGbn6c\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Dr1edNdemonXW8xAUfpcwbIBnZf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-NvcBd0YEnoc9CZxMPSLc3tqbnMh\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-NwDodRkhdo8dMJx1hnTczwSanuh\">Hot air solder leveling (HASL) is one of the most common <a href=\"https:\/\/www.elepcb.com\/blog\/pcb-surface-finish\/\">surface finishes<\/a> used in <a href=\"https:\/\/www.elepcb.com\/pcb-manufacturing-process-and-services\/\">PCB manufacturing<\/a> today. This versatile process provides excellent solderability and protection for the copper traces on printed circuit boards. As demand grows for high-reliability and lead-free electronics, HASL remains a robust, cost-effective option to consider.<\/div><div>\u00a0<\/div><div><a href=\"https:\/\/www.elepcb.com\/\">ELEPCB<\/a>, as one of the most trustworthy PCB manufacturers in China, when we need to choose HASL in the <a href=\"https:\/\/www.elepcb.com\/pcb-manufacturing-process-and-services\/\">PCB manufacturing<\/a> process, we often choose the surface treatment of lead-free HASL. In this comprehensive guide,\u00a0<a href=\"https:\/\/www.elepcb.com\/\">ELEPCB<\/a>\u00a0will explore everything you need to know about<strong>\u00a0hot air solder leveling<\/strong>\u00a0(HASL)for PCBs.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-ed5b895 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ed5b895\" 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-cb1b0a6\" data-id=\"cb1b0a6\" 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-4548c6c elementor-widget elementor-widget-spacer\" data-id=\"4548c6c\" 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-3adef51 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3adef51\" 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-413df67\" data-id=\"413df67\" 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-069bda6 elementor-widget elementor-widget-heading\" data-id=\"069bda6\" 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 Hot Air Solder Leveling ( HASL ) <\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5bd9f31 elementor-widget elementor-widget-text-editor\" data-id=\"5bd9f31\" 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=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-NvcBd0YEnoc9CZxMPSLc3tqbnMh\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-OF6Bdw13moZxhTxcldhcMbMpn3f\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-OF6Bdw13moZxhTxcldhcMbMpn3f\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-OF6Bdw13moZxhTxcldhcMbMpn3f\">Hot air solder leveling (HASL) is a metallic <a href=\"https:\/\/www.elepcb.com\/blog\/pcb-surface-finish\/\">surface finish<\/a> applied to the outermost layer of <a href=\"https:\/\/www.elepcb.com\/product\/\">a printed circuit board (PCB)<\/a>. It protects the exposed copper from oxidation until components are soldered <a href=\"https:\/\/www.elepcb.com\/pcb-assembly-process-and-services\/\">during PCB assembly<\/a>.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-4d36313 elementor-widget elementor-widget-text-editor\" data-id=\"4d36313\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-QK9hdCdTzoh4j4xuBQmcAZQSn5b\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Cd8xdeMY0oEs0HxVrerchebZn4e\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-CLe7dnvWtorSlzxzbxwc19pVncf\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-JaSGdRT2Rop8PqxVwpFczsyKnne\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-D6WndO2cwoD0saxtZOacLL3fnJb\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Sghmdi3cCofYyPxbIPTcSuW2nfh\">The HASL coating consists of a tin-lead solder alloy, typically with 63% tin and 37% lead. This <a href=\"https:\/\/www.elepcb.com\/blog\/choose-the-right-pcb-conformal-coating\/\">coating<\/a> blends with the <a href=\"https:\/\/www.elepcb.com\/blog\/pcb-solder-paste\/\">solder paste<\/a> to form high-quality solder joints.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-37a3aec elementor-widget elementor-widget-text-editor\" data-id=\"37a3aec\" 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=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-KUnXd7IWHo265Vx3a1fczyYen4g\">Here are the main steps in the HASL process:<\/div><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-UbdbdrTjio78jhxCe90cHsk1n0b\" data-list=\"bullet\"><div><strong>Flux Application: <\/strong>The PCB is cleaned and coated with flux, which removes oxides and promotes solder wetting.<\/div><\/li><li class=\"ace-line ace-line old-record-id-MTJtdrNeyosJ3MxG5oFcQ1ZFnHh\" data-list=\"bullet\"><div><strong>Immersion in <\/strong><strong>Solder<\/strong><strong> Bath: <\/strong>The board is lowered into a bath of molten solder. The solder adheres evenly across all exposed copper surfaces.<\/div><\/li><li class=\"ace-line ace-line old-record-id-MHUKdDlZKo9owuxFqgqcUrgMnWd\" data-list=\"bullet\"><div><strong>Leveling: <\/strong>Excess solder is removed by hot air knives or blade levelers. This leaves only a thin, uniform coating on the PCB.<\/div><\/li><li class=\"ace-line ace-line old-record-id-ZpqCdKG53oeJBqxTlfMc4mc3n1f\" data-list=\"bullet\"><div><strong>Washing: <\/strong>Flux residues are removed by washing the board after HASL application.<\/div><\/li><\/ul><\/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-e3fafdd elementor-widget elementor-widget-text-editor\" data-id=\"e3fafdd\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-QK9hdCdTzoh4j4xuBQmcAZQSn5b\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Cd8xdeMY0oEs0HxVrerchebZn4e\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-CLe7dnvWtorSlzxzbxwc19pVncf\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-JaSGdRT2Rop8PqxVwpFczsyKnne\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-D6WndO2cwoD0saxtZOacLL3fnJb\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Sghmdi3cCofYyPxbIPTcSuW2nfh\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ATBudugYsoLJ97xydTVczp1tnrg\">The key equipment involved includes the solder pot, hot air knives or blade levelers, and a washing system. Modern HASL processes are highly automated for consistency and efficiency.<\/div><div class=\"ace-line ace-line old-record-id-YQradVsTGoExnNxmJdPcO4ScnMd\">Overall, the HASL finish provides exceptional wetting and coverage while protecting traces until soldering. It\u2019s an inexpensive way to facilitate <a href=\"https:\/\/www.elepcb.com\/pcb-assembly-process-and-services\/\">PCB assembly<\/a> and enhance reliability.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-dbe8af1 elementor-widget elementor-widget-heading\" data-id=\"dbe8af1\" 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>Benefits and Drawbacks of HASL<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-97241a6 elementor-widget elementor-widget-text-editor\" data-id=\"97241a6\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-QK9hdCdTzoh4j4xuBQmcAZQSn5b\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Cd8xdeMY0oEs0HxVrerchebZn4e\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-CLe7dnvWtorSlzxzbxwc19pVncf\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-JaSGdRT2Rop8PqxVwpFczsyKnne\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-DY9ZdbYBeo3ZuUxWeN6c9Z5Enqh\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-PBIAddDwkoMf9ax69YHcrafAnhd\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-HG2ndk732ohjXcxaWjrc38eBnTv\">Like any<a href=\"https:\/\/www.elepcb.com\/blog\/pcb-surface-finish\/\"> surface finish<\/a>, HASL has both advantages and limitations to consider:<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-1c25603 elementor-widget elementor-widget-heading\" data-id=\"1c25603\" 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<h3 class=\"elementor-heading-title elementor-size-default\"><b>Benefits of HASL<\/b><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64ccf6c elementor-widget elementor-widget-text-editor\" data-id=\"64ccf6c\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-QK9hdCdTzoh4j4xuBQmcAZQSn5b\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Cd8xdeMY0oEs0HxVrerchebZn4e\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-CLe7dnvWtorSlzxzbxwc19pVncf\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-JaSGdRT2Rop8PqxVwpFczsyKnne\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-DY9ZdbYBeo3ZuUxWeN6c9Z5Enqh\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-PBIAddDwkoMf9ax69YHcrafAnhd\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-HG2ndk732ohjXcxaWjrc38eBnTv\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-Aye9d5KMoolazOxa07Qc7x8MnNf\" data-list=\"bullet\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Aye9d5KMoolazOxa07Qc7x8MnNf\"><strong>Excellent Solderability: <\/strong>The solder coating gives maximal wetting ability during component attachment. This ensures reliable, consistent solder joints.<\/div><div class=\"ace-line ace-line old-record-id-Lif8djwmvo5uBaxTGhZcjCDSnuc\"><strong>Cost-Effective: <\/strong>HASL requires minimal processing steps compared to finishes like ENIG or immersion silver. The solder materials are also inexpensive.<\/div><div class=\"ace-line ace-line old-record-id-B2CDdMtUvo9fVrxw2qtchCQMnWc\"><strong>Wide Availability: <\/strong>HASL is offered by most PCB manufacturers as a standard finish option ideal for general purposes.<\/div><\/div><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-5d9dd46 elementor-widget elementor-widget-heading\" data-id=\"5d9dd46\" 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<h3 class=\"elementor-heading-title elementor-size-default\"><b>Drawbacks of HASL<\/b><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad086cc elementor-widget elementor-widget-text-editor\" data-id=\"ad086cc\" 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=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><ul><li class=\"ace-line ace-line old-record-id-VqqndmInIovxJqxD8O4c5u1inDh\"><strong>Uneven Surfaces: <\/strong>Variations in coating thickness can make HASL unsuitable for ultra-fine pitch components. Advanced leveling techniques help minimize this.<\/li><li class=\"ace-line ace-line old-record-id-JAn5doxxkobl3dxAFGKcwwVinbf\"><strong>Thermal Stress: <\/strong>Excessive heat during HASL can potentially create defects in the PCB laminate. Careful process control is necessary.<\/li><li class=\"ace-line ace-line old-record-id-H6TzdwELNorppRxmyquct7u6nah\"><strong>Lead Content: <\/strong>Traditional tin-lead HASL contains toxic lead. Lead-free HASL must be used to meet environmental regulations.<\/li><\/ul><\/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-3a123e2 elementor-widget elementor-widget-heading\" data-id=\"3a123e2\" 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>Lead HASL vs. Lead-Free HASL<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e3e4a6 elementor-widget elementor-widget-text-editor\" data-id=\"4e3e4a6\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-BflhdJb8io9OTTxyVFcc7f2anff\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-TegYdRvObojoyGxu9nucLf9TnMg\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-D70odpXv0oydX6xPMw3cCrnwnNe\">As environmental regulations like <a href=\"https:\/\/www.elepcb.com\/blog\/rohs-compliance-for-circuit-board-manufacturing\/\">RoHS<\/a> banning lead in electronics gained adoption,<a href=\"https:\/\/www.elepcb.com\/blog\/lead-vs-lead-free-solder-which-is-better\/\"> lead-free<\/a> HASL processes were developed. Here\u2019s how traditional lead HASL compares to lead-free HASL:<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-aafed46 elementor-widget elementor-widget-heading\" data-id=\"aafed46\" 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<h3 class=\"elementor-heading-title elementor-size-default\"><b>Lead HASL<\/b><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-610f80d elementor-widget elementor-widget-text-editor\" data-id=\"610f80d\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-MVDIdguepoYXkMxuovkc2LAKn6f\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-G2g3dhlx8oYmQJxaY1JchBMenjb\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><ul><li class=\"ace-line ace-line old-record-id-FUn1dRPi2oi5AQxp1Vxcgus8nae\">Uses tin-lead solder alloy, typically 63Sn\/37Pb. Melting point is 183\u00b0C.<\/li><li class=\"ace-line ace-line old-record-id-KL72dheipojiEuxB7clc8jgBnDg\">Produces smooth, bright finishes. Lead promotes optimal fluidity and wetting.<\/li><li class=\"ace-line ace-line old-record-id-SKIJdV5qyo4LLFxYWJ9cpBwtnMh\">Solders easily at lower temperatures, compatible with common <a href=\"https:\/\/www.elepcb.com\/blog\/pcb-substrate-materials\/\">PCB materials<\/a>.<\/li><li class=\"ace-line ace-line old-record-id-CPRgdiXCQoh9hqxITHqcewB0nfd\">Potentially hazardous to the environment and human health due to lead content.<\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-c385fa8 elementor-widget elementor-widget-heading\" data-id=\"c385fa8\" 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<h3 class=\"elementor-heading-title elementor-size-default\"><b>Lead-Free HASL<\/b><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff04341 elementor-widget elementor-widget-text-editor\" data-id=\"ff04341\" 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=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-Q6OVdSZq3oRWvhxgCjYcatspnxh\" data-list=\"bullet\"><div>Replaces lead in the solder alloy, typically with silver or bismuth. Higher melting points around 215-240\u00b0C.<\/div><\/li><li class=\"ace-line ace-line old-record-id-L309dbRHcoxC9LxLMd3c8m7unDg\" data-list=\"bullet\"><div>Developed to meet environmental regulations and address concerns over lead usage.<\/div><\/li><li class=\"ace-line ace-line old-record-id-SFOPddA5vofxeLxAymyctSG9n5V\" data-list=\"bullet\"><div>Requires higher processing temperatures and heat-resistant PCB materials.<\/div><\/li><li class=\"ace-line ace-line old-record-id-RTd8dPCoMoAzTNxZ3amcII2lnBf\" data-list=\"bullet\"><div>Provides comparable or slightly less uniform finishes than leaded HASL.<\/div><\/li><li class=\"ace-line ace-line old-record-id-E6HndkBWio4zNExMmyEcoVHpnUj\" data-list=\"bullet\"><div>Popular lead-free alloys include SnAgCu, SnCu, and SnBi. Specialized alloys like SnCuNiGe optimize performance.<\/div><\/li><\/ul><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-I1ZBdmuAGoGcAqxdEugcErobnjh\">Lead-free HASL enables PCB manufacturing to meet regulatory compliance and environmentally-conscious standards. With process refinements, lead-free HASL can deliver similar performance to lead-based HASL for most applications.<\/div><\/div><\/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-f79f8b6 elementor-widget elementor-widget-heading\" data-id=\"f79f8b6\" 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>Comparing Lead and Lead-Free HASL Outcomes<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ffb6919 elementor-widget elementor-widget-text-editor\" data-id=\"ffb6919\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-CEDOd2NWToKqsLxBZwFcG1kpnnb\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-GAvddN3vuoIoUYxjIr0cUj98nBb\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-RgxKdUNiVoIDiax2fiJcP1jonah\">Early concerns about adopting <a href=\"https:\/\/www.elepcb.com\/blog\/lead-vs-lead-free-solder-which-is-better\/\">lead-free<\/a> HASL included:<\/div><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-Aprhdl7KZoiyoVxGsBxcOENkn0f\" data-list=\"bullet\"><div>Thermal damage to PCB laminates from higher temperatures.<\/div><\/li><li class=\"ace-line ace-line old-record-id-Bdi9dZDPSo0aR4xxRU1cQGJense\" data-list=\"bullet\"><div>Coplanarity issues from greater lead-free solder surface tension.<\/div><\/li><li class=\"ace-line ace-line old-record-id-LqHtdkuiKojU5LxroeScFbFSnGg\" data-list=\"bullet\"><div>Paste printing problems due to thickness variations.<\/div><\/li><\/ul><div class=\"ace-line ace-line old-record-id-WtZ4dovFco0qUuxd4FKcBBPVnqw\">However, experience and process refinement has minimized these challenges:<\/div><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-PG7Qd8LIeocJfnxr1aCcF3k8nEg\" data-list=\"bullet\"><div>Most PCB materials withstand lead-free HASL with proper control. More heat-resistant options are also available.<\/div><\/li><li class=\"ace-line ace-line old-record-id-VzgodOrsFooBdWxlXPcc0DrLnzd\" data-list=\"bullet\"><div>Lead-free solders deposit more uniformly, improving coplanarity.<\/div><\/li><li class=\"ace-line ace-line old-record-id-QyVvd48g0oMxhcxtYy5cei3Vnwc\" data-list=\"bullet\"><div>Adjusting solder volume and leveling parameters optimizes thickness.<\/div><\/li><\/ul><div class=\"ace-line ace-line old-record-id-K7qpdgvAjowOePximw4cHvOhnIb\">In fact, lead-free HASL can actually perform better than tin-lead in some regards. The higher surface tension helps produce flatter, more planar finishes. This enables lead-free HASL to pass coplanarity requirements for pads under BGAs, CSPs, and fine-pitch components.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-2914d0c elementor-widget elementor-widget-heading\" data-id=\"2914d0c\" 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>Application and Uses of HASL<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a2ee8a elementor-widget elementor-widget-text-editor\" data-id=\"2a2ee8a\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Q4KOdlTDXog2m6xPucScZFbDnPc\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Oza5d5X6roO1CHxzSkNc7u4Inpg\">HASL is applied across a diverse range of electronics sectors:<\/div><div><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><ul><li class=\"ace-line ace-line old-record-id-V0wKdrlKXooAnZx35y8cXkngnUb\"><a href=\"https:\/\/www.elepcb.com\/applications\/pcb-for-consumer-electronics\/\"><strong>Consumer Electronics<\/strong><\/a> \u2013 Extensively used in devices like smartphones, tablets, computers, home appliances, gaming systems, and more.<\/li><li class=\"ace-line ace-line old-record-id-R5cQd9DX9ooSVNxNOCVcdEfNnBg\"><a href=\"https:\/\/www.elepcb.com\/applications\/pcbs-for-automotive\/\"><strong>Automotive<\/strong><\/a> \u2013 Used in engine control units, dashboards, lighting, infotainment systems, and the growing amount of auto electronics.<\/li><li class=\"ace-line ace-line old-record-id-DJQTdgKSVoqppqxe3s5cnXe3n9f\"><a href=\"https:\/\/www.elepcb.com\/applications\/pcb-for-industrial-equipments\/\"><strong>Industrial Equipment<\/strong><\/a> \u2013 Found in industrial machinery, robotics, motor drives, power supplies, instrumentation, and control systems.<\/li><li class=\"ace-line ace-line old-record-id-VIofdO7Rdo9V9jxMGTscyQRgn6e\"><a href=\"https:\/\/www.elepcb.com\/applications\/pcb-for-telecommunication-systems\/\"><strong>Telecommunications<\/strong><\/a> \u2013 Applied in networking equipment like routers, switches, servers, and base stations.<\/li><li class=\"ace-line ace-line old-record-id-W9Tyd5iIromOerxWNdpcXLrunrd\">Medical Devices \u2013 Used in equipment like imaging systems, monitors, diagnostics, prosthetics, and other healthcare electronics.<\/li><li class=\"ace-line ace-line old-record-id-KewYdi7pGoHxBTxEAe0c7C5Gnle\"><a href=\"https:\/\/www.elepcb.com\/applications\/pcb-for-security-system\/\"><strong>Aerospace\/Defense<\/strong><\/a> \u2013 Applied in avionics, radars, communications, and other mission-critical aerospace and defense systems.<\/li><\/ul><div class=\"ace-line ace-line old-record-id-HanmdRiQNophWkxCIXrc0hounte\">HASL provides an optimal balance of cost, performance, and reliability for moderate volume production across these industries.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-6565eaa elementor-widget elementor-widget-heading\" data-id=\"6565eaa\" 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>Inspecting and Troubleshooting HASL<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d7a27d9 elementor-widget elementor-widget-text-editor\" data-id=\"d7a27d9\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-CEDOd2NWToKqsLxBZwFcG1kpnnb\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-GAvddN3vuoIoUYxjIr0cUj98nBb\">Like solder joints, HASL coatings can be easily inspected through visual examination. The finish should appear smooth, bright, and silver-colored over all copper surfaces.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-81b5817 elementor-widget elementor-widget-text-editor\" data-id=\"81b5817\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-CEDOd2NWToKqsLxBZwFcG1kpnnb\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-UMLCdMI4doQApExVGk8cX3fEn7d\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-RHmFdD8XqoteRHxJiEKcS9nrnOF\">Some common defects include:<\/div><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-TkWdduH6eobtdUxSDAPcYbmGnZe\" data-list=\"bullet\"><div><strong>Thin, uneven coatings<\/strong> \u2013 Insufficient solder volume was applied. This exposes the intermetallic layer and impacts solderability.<\/div><\/li><li class=\"ace-line ace-line old-record-id-JmH0dVJR6oL2vCxrmVPcenuHn3g\" data-list=\"bullet\"><div><strong>Dewetting<\/strong> \u2013 The solder did not properly wet the copper pad. This also impairs solderability.<\/div><\/li><li class=\"ace-line ace-line old-record-id-SUTxdIRYpoR7QaxmmjBc6k9znIe\" data-list=\"bullet\"><div><strong>Dull or dark surfaces<\/strong> \u2013 Oxide formation or other contamination interfered with wetting and bonding.<\/div><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-bf238b4 elementor-widget elementor-widget-text-editor\" data-id=\"bf238b4\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-CEDOd2NWToKqsLxBZwFcG1kpnnb\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-UMLCdMI4doQApExVGk8cX3fEn7d\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-VGHidkHd9owIg5xbJA7ci8JZnRh\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-B7nGdnIasozQrmxCJi2ctT5dnLg\"><strong>Process controls<\/strong> are essential to prevent defects and achieve optimal HASL quality:<\/div><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-V5DmdekFyoJSElxymW0cVmaen4f\" data-list=\"bullet\"><div>Carefully control solder bath temperature, exposure time, and leveling.<\/div><\/li><li class=\"ace-line ace-line old-record-id-R1eEdb16Uo8O4RxB9Wwcpeppn8g\" data-list=\"bullet\"><div>Use high-quality flux matched to the solder alloy.<\/div><\/li><li class=\"ace-line ace-line old-record-id-BHpSdHR8QoIxAXx4DKzcjsEVnZD\" data-list=\"bullet\"><div>Ensure PCB surfaces are clean and free of oxidation prior to HASL.<\/div><\/li><li class=\"ace-line ace-line old-record-id-PBkkd25SUoBXTjxSJ7lc7Zlvnfc\" data-list=\"bullet\"><div>Adjust leveling to leave enough solder to cover pads after surface tension effects.<\/div><\/li><li class=\"ace-line ace-line old-record-id-Q8i4d2ou1o3HsOxpR1UckVS3nee\" data-list=\"bullet\"><div>Regularly maintain the solder bath composition and chemistry.<\/div><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-22aa208 elementor-widget elementor-widget-heading\" data-id=\"22aa208\" 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-23639d2 elementor-widget elementor-widget-text-editor\" data-id=\"23639d2\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-XJadduXTaoQuR6xjU8hcCDY9nlh\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-SY76ddqi1oUkTqxS04ScDI2nnmd\">Hot air solder leveling is a versatile PCB finish that delivers unparalleled solderability at low cost. It protects copper traces until assembly while facilitating easy component soldering. Lead-free HASL enables compliance with environmental regulations while providing similar or enhanced performance compared to traditional lead-based HASL. With mindful process control and inspection, manufacturers can achieve excellent results.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-54bd155 elementor-widget elementor-widget-text-editor\" data-id=\"54bd155\" 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=\"KHt7dfI87ovw2WxqCl2cU5HrnAb\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XLT6dI7hzoJQsjxqq0QcfmIJnKc\"><div data-page-id=\"JJqidAkc4o8Ha2xNMZjc8iVEnnd\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZlRZdtbgMomAuqxeQwAcqkUpnLL\"><div data-page-id=\"C7kadMvWBoLcoaxp16dcA1WpnYg\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-doxcnzTd6F6qWM9mYNepiVZmApf\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-XJadduXTaoQuR6xjU8hcCDY9nlh\"><div data-page-id=\"ShFyddlWko5FOnxSvERcu5TcnBd\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-GzOvdjU3qoH1ZMx5ZOgc2bXsnTf\"><div data-page-id=\"Kwledrq3RoIrmexokIQc0JOOnle\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-N9gRdgbqhoCd6YxPWtIc2JSinbg\">For many applications, HASL strikes the right balance of affordability, ease-of-use, and reliability. As a trusted extension of proven soldering processes, it makes an ideal surface finish option for PCBs across many industries and use cases. With continual optimization, HASL will remain a staple process to enable high-quality electronic devices.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/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-a182424 elementor-widget elementor-widget-heading\" data-id=\"a182424\" 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\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-18a9778 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"18a9778\" 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-106db210\" data-id=\"106db210\" 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-502ecf50 elementor-widget elementor-widget-toggle\" data-id=\"502ecf50\" 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-1341\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1341\" 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: What solder alloys are used in lead-free HASL?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1341\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1341\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div><div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div>A1: Common lead-free HASL alloys include SnAgCu, SnCu, SnBi, and specialized alloys like SnCuNiGe. SAC305 and Sn99Cu1 are popular choices.<\/div><\/div><\/div><\/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-1342\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1342\" 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: Does HASL protect PCBs from oxidation?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1342\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1342\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-BWQ0dJKPTovPhYx6XTfc9xMAngc\"><div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-ZGjidQpZuouEMuxnruBcR4Ujndg\">A2: Yes, the solder coating applied during HASL protects the copper traces on a PCB from oxidation until components are soldered.<\/div><\/div><\/div><\/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-1343\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1343\" 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:Can HASL be used on fine pitch components?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1343\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1343\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\"><div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\">A3: With advanced leveling techniques, modern lead-free HASL can achieve sufficient planarity for fine pitch components like 0201 devices.<\/div><\/div><\/div><\/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-1344\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1344\" 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 long does a HASL finish last before re-tinning is needed?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1344\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1344\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\"><div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\">A4: Properly applied HASL can last for several years before solderability degrades enough to require re-tinning the PCB.<\/div><\/div><\/div><\/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-1345\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-1345\" 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\">Q5:Is hand soldering possible on boards with a HASL finish?<\/a>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1345\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-1345\"><div data-page-id=\"K5cQdPyqAoIVz9xiCVzcrjK4n2e\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\" old-record-id-VIvSds1JnokGWWxGglucirLXn4O\"><div data-page-id=\"PzvadCyLxoGC6axfsi0cBB2BnWf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-XizidTe9soWkg0xX1N9cjCycnJd\">A5: Yes, hand soldering can be performed on HASL boards without any issues. The existing solder coating provides excellent wetting.<\/div><\/div><\/div><\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\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-4b292e36 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4b292e36\" 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-4f33f8f2\" data-id=\"4f33f8f2\" 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-21eccfea elementor-widget elementor-widget-shortcode\" 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Guide to PCB Inspection Methods-ELE PCB\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"4187\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tYour Name\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-message elementor-col-50\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tEmail Address\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[message]\" id=\"form-field-message\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-tel elementor-field-group elementor-column elementor-field-group-field_373bda7 elementor-col-50\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_373bda7\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tPhone Number\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input size=\"1\" type=\"tel\" name=\"form_fields[field_373bda7]\" id=\"form-field-field_373bda7\" 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\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-1\">Flexible Printed Circuit Boards<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Flexible Aluminum PCBs\" id=\"form-field-field_c168eb1-2\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-2\">Flexible Aluminum PCBs<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Flexible PCB Microcircuits\" id=\"form-field-field_c168eb1-3\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-3\">Flexible PCB Microcircuits<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Ultra-Thin Flexible PCBs\" id=\"form-field-field_c168eb1-4\" name=\"form_fields[field_c168eb1][]\"> <label for=\"form-field-field_c168eb1-4\">Ultra-Thin Flexible PCBs<\/label><\/span><span class=\"elementor-field-option\"><input type=\"checkbox\" value=\"Rigid-Flex\" 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 Hot air solder leveling (HASL) is one of the most common surface finishes used in PCB manufacturing today. This versatile process provides excellent solderability and protection for the copper traces on printed circuit boards. As demand grows for high-reliability and lead-free electronics, HASL remains a robust, cost-effective option to consider.\u00a0ELEPCB, as one [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12604,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[129],"class_list":["post-12576","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-pcb-manufacturing"],"_links":{"self":[{"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts\/12576","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/comments?post=12576"}],"version-history":[{"count":32,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts\/12576\/revisions"}],"predecessor-version":[{"id":18935,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/posts\/12576\/revisions\/18935"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/media\/12604"}],"wp:attachment":[{"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/media?parent=12576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/categories?post=12576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.elepcb.com\/it\/wp-json\/wp\/v2\/tags?post=12576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}