{"id":33279,"date":"2026-08-10T16:58:55","date_gmt":"2026-08-10T08:58:55","guid":{"rendered":"https:\/\/www.bestpcbs.com\/blog\/?p=33279"},"modified":"2026-08-10T16:58:58","modified_gmt":"2026-08-10T08:58:58","slug":"selective-wave-soldering","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/","title":{"rendered":"Selective Wave Soldering: Avoid Mixed-Assembly Rework"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#What_Is_Selective_Wave_Soldering\" >What Is Selective Wave Soldering?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#When_Does_Selective_Wave_Soldering_Prevent_Rework\" >When Does Selective Wave Soldering Prevent Rework?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#Selective_Soldering_vs_Wave_Soldering\" >Selective Soldering vs Wave Soldering<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#How_Does_the_Selective_Wave_Soldering_Process_Work\" >How Does the Selective Wave Soldering Process Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#Selective_Wave_Soldering_Design_Rules\" >Selective Wave Soldering Design Rules<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#How_Do_You_Prevent_Selective_Soldering_Defects\" >How Do You Prevent Selective Soldering Defects?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#What_Should_a_Selective_Wave_Soldering_RFQ_Include\" >What Should a Selective Wave Soldering RFQ Include?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#A_Mixed-Technology_PCB_Assembly_Example\" >A Mixed-Technology PCB Assembly Example<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#How_Can_EBest_Support_Selective_Wave_Soldering\" >How Can EBest Support Selective Wave Soldering?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/selective-wave-soldering\/#Selective_Wave_Soldering_FAQs\" >Selective Wave Soldering FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<div class=\"yzp-no-index\"><\/div>\n<p><a href=\"https:\/\/www.bestpcbs.com\/blog\/selective-wave-soldering\/\">Selective wave soldering<\/a> targets programmed through-hole joints instead of exposing the full board underside. It can protect reflowed components and improve consistency, but only when the layout, nozzle access, production volume, and acceptance criteria support the process.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28129.jpg\" alt=\"selective wave soldering\" class=\"wp-image-33276\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28129.jpg 1200w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28129-300x200.jpg 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28129-1024x683.jpg 1024w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28129-768x512.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">Selective wave soldering for targeted through-hole joints on a mixed-technology PCB assembly.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_Selective_Wave_Soldering\"><\/span>What Is Selective Wave Soldering?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Selective wave soldering is an automated process that applies flux, heat, and molten solder to chosen plated through-hole joints. A small nozzle or mini-wave reaches the target area without deliberately exposing the full board underside.<\/p>\n\n\n\n<p>It is often used after SMT reflow to solder connectors, relays, transformers, terminals, and switches. Compared with extensive hand soldering or full-wave exposure, it can reduce masking, operator variation, and touch-up.<\/p>\n\n\n\n<p>The process still needs enough nozzle clearance, flux coverage, and heat transfer. The real question is whether the released assembly provides a stable and inspectable process window.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_Does_Selective_Wave_Soldering_Prevent_Rework\"><\/span>When Does Selective Wave Soldering Prevent Rework?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Selective wave soldering is most useful when a board has reflowed SMDs on the bottom side but only a limited number of through-hole joints.<\/p>\n\n\n\n<p><strong><span style=\"color:#169bd5;\">It may reduce rework when:<\/span><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bottom-side SMDs are close to through-hole joints.<\/li>\n\n\n\n<li>Heat-sensitive parts should avoid a full solder wave.<\/li>\n\n\n\n<li>High-pin-count connectors need repeatable soldering.<\/li>\n\n\n\n<li>Hand soldering would add too much variation.<\/li>\n\n\n\n<li>Product variants require different through-hole locations.<\/li>\n<\/ul>\n\n\n\n<p>It is not always the lowest-cost choice. <a href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/02\/wave-soldering-process-advantages-defects-and-when-to-use-it-in-pcb-assembly\/\">Full wave soldering<\/a> may suit a through-hole-heavy board, while controlled hand soldering may suit a simple prototype. Early supplier review helps identify access or layout problems before production.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selective_Soldering_vs_Wave_Soldering\"><\/span>Selective Soldering vs Wave Soldering<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Both processes create through-hole joints, but they expose the PCB differently. The best choice depends on layout, volume, setup cost, cycle time, and rework risk.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Factor<\/th><th>Selective soldering<\/th><th>Wave soldering<\/th><\/tr><\/thead><tbody><tr><td>Contact<\/td><td>Targeted joints<\/td><td>Full underside<\/td><\/tr><tr><td>Best fit<\/td><td>Mixed SMT\/THT<\/td><td>THT-heavy boards<\/td><\/tr><tr><td>Setup<\/td><td>Program and nozzle<\/td><td>Profile and pallet<\/td><\/tr><tr><td>Speed<\/td><td>Slower path<\/td><td>Faster for many joints<\/td><\/tr><tr><td>Main risk<\/td><td>Access and cycle time<\/td><td>Heat, masking, rework<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Compare total cost, not only unit price. Include programming, pallets, first-article inspection, manual touch-up, and scrap risk. A selective process may cost more per cycle but less overall if it prevents masking and rework.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Does_the_Selective_Wave_Soldering_Process_Work\"><\/span>How Does the Selective Wave Soldering Process Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong><span style=\"color:#169bd5;\">The selective wave soldering process normally includes five stages:<\/span><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Flux:<\/strong> A controlled amount reaches the selected joints.<\/li>\n\n\n\n<li><strong>Preheat:<\/strong> Heat activates the flux and reduces thermal shock.<\/li>\n\n\n\n<li><strong>Soldering:<\/strong> A programmed nozzle contacts each joint or joint group.<\/li>\n\n\n\n<li><strong>Cooling:<\/strong> Joints solidify without disturbance.<\/li>\n\n\n\n<li><strong>Inspection:<\/strong> Results are checked against the approved criteria.<\/li>\n<\/ul>\n\n\n\n<p>Board thickness, copper distribution, surface finish, hole fit, alloy, flux, and component mass all affect the process window. A generic temperature or dwell time cannot fit every PCB.<\/p>\n\n\n\n<p>A first article should prove that the selected settings work on the actual assembly. Approved programs, materials, and inspection criteria should then remain under revision control.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28229.jpg\" alt=\"selective wave soldering\" class=\"wp-image-33277\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28229.jpg 1200w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28229-300x200.jpg 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28229-1024x683.jpg 1024w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28229-768x512.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">A localized solder nozzle targets a selected through-hole connector area.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selective_Wave_Soldering_Design_Rules\"><\/span>Selective Wave Soldering Design Rules<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Selective wave soldering design rules should protect nozzle access and support consistent heat transfer.<\/p>\n\n\n\n<p><strong>Review before PCB release:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nozzle access:<\/strong> Nearby parts must not block the target joint.<\/li>\n\n\n\n<li><strong>Clearance:<\/strong> Keep enough space from SMDs, shields, and tall bodies.<\/li>\n\n\n\n<li><strong>Lead protrusion:<\/strong> Allow solder contact without creating shorting risk.<\/li>\n\n\n\n<li><strong>Hole fit:<\/strong> Support component insertion and solder flow.<\/li>\n\n\n\n<li><strong>Pad and mask:<\/strong> Promote wetting without encouraging bridges.<\/li>\n\n\n\n<li><strong>Thermal balance:<\/strong> Review joints connected to planes or heavy copper.<\/li>\n\n\n\n<li><strong>Panel access:<\/strong> Rails and tooling must not block the path.<\/li>\n\n\n\n<li><strong>Inspection access:<\/strong> Finished joints must be assessable.<\/li>\n<\/ul>\n\n\n\n<p>Missing these checks can lead to blocked nozzles, connector bridging, or poor fill on high-mass pins. The result may be manual rework, new tooling, or a PCB revision.<\/p>\n\n\n\n<p>EBest Circuit (Best Technology) can review manufacturability and assembly access within the agreed production scope. The customer remains responsible for component approval, circuit function, safety spacing, and the released design.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Do_You_Prevent_Selective_Soldering_Defects\"><\/span>How Do You Prevent Selective Soldering Defects?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Selective soldering defects should be traced to the actual board condition and process variable. Increasing heat without finding the cause may fix one joint and damage another.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Defect<\/th><th>Common cause<\/th><th>Check<\/th><\/tr><\/thead><tbody><tr><td>Bridging<\/td><td>Tight spacing or excess solder<\/td><td>Mask, path, withdrawal<\/td><\/tr><tr><td>Poor barrel fill<\/td><td>Low heat or high thermal mass<\/td><td>Preheat, dwell, hole fit<\/td><\/tr><tr><td>Non-wetting<\/td><td>Oxidation or weak flux action<\/td><td>Storage, finish, flux<\/td><\/tr><tr><td>Icicles<\/td><td>Poor withdrawal or excess contact<\/td><td>Path, dwell, nozzle<\/td><\/tr><tr><td>Solder balls<\/td><td>Excess flux or splashing<\/td><td>Flux, preheat, setup<\/td><\/tr><tr><td>Pad damage<\/td><td>Excess heat or repeated repair<\/td><td>Profile and repair history<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>A practical validation plan includes:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confirm the BOM, PCB revision, drawing, and program.<\/li>\n\n\n\n<li>Run a first article with production materials and equipment.<\/li>\n\n\n\n<li>Inspect ordinary and high-thermal-mass joints.<\/li>\n\n\n\n<li>Agree on barrel fill, bridging, residue, and damage criteria.<\/li>\n\n\n\n<li>Record approved settings and permitted touch-up.<\/li>\n\n\n\n<li>Revalidate after significant material or design changes.<\/li>\n<\/ul>\n\n\n\n<p>Inspection must follow the customer\u2019s specified workmanship and contractual requirements. The assembler should provide evidence for the agreed PCBA scope, while the customer owns final product acceptance.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28329.jpg\" alt=\"selective wave soldering\" class=\"wp-image-33278\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28329.jpg 1200w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28329-300x200.jpg 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28329-1024x683.jpg 1024w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/selective20wave20soldering28329-768x512.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">Inspection helps verify solder-joint quality against the agreed acceptance criteria.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Should_a_Selective_Wave_Soldering_RFQ_Include\"><\/span>What Should a Selective Wave Soldering RFQ Include?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>An incomplete RFQ can hide access conflicts, difficult connectors, and special inspection needs. These discoveries often lead to quotation changes later.<\/p>\n\n\n\n<p><strong>Send the following files and requirements:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gerbers, drill data, and fabrication drawing.<\/li>\n\n\n\n<li>BOM with approved manufacturer part numbers.<\/li>\n\n\n\n<li>Placement data and assembly drawings.<\/li>\n\n\n\n<li>Panel requirements and relevant component datasheets.<\/li>\n\n\n\n<li>Order quantity, repeat demand, and product variants.<\/li>\n\n\n\n<li>Solder alloy, cleaning, and material restrictions.<\/li>\n\n\n\n<li>Workmanship, hole-fill, and inspection requirements.<\/li>\n\n\n\n<li>Test, traceability, and packaging instructions.<\/li>\n<\/ul>\n\n\n\n<p>Also identify areas where touch-up is prohibited or downstream coating creates a special constraint. A complete package helps the supplier compare selective soldering, wave soldering, hand soldering, or a hybrid route on the same released scope.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"A_Mixed-Technology_PCB_Assembly_Example\"><\/span>A Mixed-Technology PCB Assembly Example<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Consider a double-sided SMT assembly with a multi-pin connector, power terminal, and relay added after reflow. Bottom-side passives sit near the connector, while the terminal connects to a large copper area.<\/p>\n\n\n\n<p>Full wave soldering may require a pallet to protect the SMDs. Hand soldering may add variation and labor. A selective-soldering review would instead check:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nozzle access around the connector pins.<\/li>\n\n\n\n<li>Extra heat demand at the power terminal.<\/li>\n\n\n\n<li>Relay clearance and lead protrusion.<\/li>\n\n\n\n<li>First-article results at both normal and difficult joints.<\/li>\n<\/ul>\n\n\n\n<p>If the process window is stable, selective soldering may reduce masking and touch-up. If the nozzle cannot reach the connector, the layout, tooling, or soldering method should change before production.<\/p>\n\n\n\n<p>This is a manufacturing example, not a claim about a specific customer project. The final decision depends on the actual PCB, BOM, volume, and acceptance requirements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Can_EBest_Support_Selective_Wave_Soldering\"><\/span>How Can EBest Support Selective Wave Soldering?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong><span style=\"color:#169bd5;\">EBest Circuit (Best Technology) supports customers within the PCB and PCBA manufacturing scope. Support may include:<\/span><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PCB manufacturability and assembly-access review.<\/li>\n\n\n\n<li>PCB fabrication and revision control.<\/li>\n\n\n\n<li>BOM review and sourcing coordination.<\/li>\n\n\n\n<li>SMT and agreed <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/12\/through-hole-pcb-assembly-service\/\">through-hole assembly<\/a>.<\/li>\n\n\n\n<li>Selective-soldering feasibility review.<\/li>\n\n\n\n<li>First-article inspection and agreed testing.<\/li>\n\n\n\n<li>Required traceability and production records.<\/li>\n<\/ul>\n\n\n\n<p>The customer retains responsibility for circuit design, component approval, firmware, regulatory requirements, certification, and final product validation. Responsibilities should be defined by the quotation, released files, and approved inspection or test requirements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selective_Wave_Soldering_FAQs\"><\/span>Selective Wave Soldering FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Is selective wave soldering the same as selective soldering?<\/strong><br>\nIt is a common selective-soldering method that uses a localized solder wave or nozzle. Because \u201cselective soldering\u201d can also describe other localized methods, the RFQ should name the intended process.<\/p>\n\n\n\n<p><strong>Can selective soldering replace wave soldering on every PCB?<\/strong><br>\nNo. Nozzle access, joint count, cycle time, thermal mass, volume, and cost may make wave soldering or another process more suitable.<\/p>\n\n\n\n<p><strong>Does selective wave soldering eliminate hand soldering?<\/strong><br>\nIt can reduce manual work when joints are accessible and the program is stable. Blocked or very low-quantity joints may still require an approved alternative.<\/p>\n\n\n\n<p><strong>What causes insufficient hole fill during selective soldering?<\/strong><br>\nCommon causes include inadequate heat, high copper mass, poor hole fit, weak solderability, flux problems, or an unstable nozzle path.<\/p>\n\n\n\n<p><strong>What files are needed for a selective-soldering quotation?<\/strong><br>\nProvide PCB fabrication data, BOM, assembly files, component details, quantities, panel information, inspection criteria, and test or traceability requirements.<\/p>\n\n\n\n<p>Need help deciding whether <a href=\"https:\/\/www.bestpcbs.com\/blog\/selective-wave-soldering\/\">selective wave soldering<\/a> fits your mixed-technology PCBA? Send your released PCB files, BOM, quantities, and acceptance requirements to <strong>sales@bestpcbs.com<\/strong> for a manufacturing review and quotation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Selective wave soldering targets programmed through-hole joints instead of exposing the full board underside. It can protect reflowed components and improve consistency, but only when the layout, nozzle access, production volume, and acceptance criteria support the process. What Is Selective Wave Soldering? Selective wave soldering is an automated process that applies flux, heat, and molten [&hellip;]<\/p>\n","protected":false},"author":33085,"featured_media":33276,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[175,174,161],"tags":[7588,7589,3709],"class_list":["post-33279","post","type-post","status-publish","format-standard","hentry","category-best-pcb","category-bestpcb","category-pcba","tag-selective-wave-soldering","tag-through-hole-assembly-2","tag-wave-soldering"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Find out whether selective wave soldering fits your mixed SMT\/THT PCB, what nozzle clearance it needs, and how to prevent bridging and poor barrel fill.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" 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