{"id":6301,"date":"2026-04-30T17:15:38","date_gmt":"2026-04-30T09:15:38","guid":{"rendered":"https:\/\/txjpcba.com\/?p=6301"},"modified":"2026-04-30T17:15:38","modified_gmt":"2026-04-30T09:15:38","slug":"what-is-pcb-cleaning-process","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/zh\/what-is-pcb-cleaning-process\/","title":{"rendered":"What is PCB cleaning process?"},"content":{"rendered":"<h2 data-start=\"0\" data-end=\"33\"><strong data-start=\"0\" data-end=\"33\">PCB Cleaning Process<\/strong><\/h2>\n<p data-start=\"35\" data-end=\"409\">\u7684 <strong data-start=\"39\" data-end=\"63\">PCB \u6e05\u6f54\u88fd\u7a0b<\/strong> is a critical step in <a href=\"https:\/\/txjpcba.com\/zh\/pcb-%e8%a3%9d%e9%85%8d\/\"><strong data-start=\"86\" data-end=\"102\">PCB \u7d44\u88dd<\/strong><\/a> that removes contaminants such as flux residues, dust, oils, and ionic impurities from the surface of a printed circuit board. Proper cleaning is essential after <strong data-start=\"265\" data-end=\"281\">SMT \u7d44\u88dd<\/strong> and soldering to ensure long-term reliability, electrical performance, and compatibility with processes like conformal coating.<\/p>\n<p data-start=\"411\" data-end=\"537\">Even when using \u201cno-clean\u201d flux, residues can still affect sensitive electronics, especially in high-reliability applications.<\/p>\n<figure id=\"attachment_6302\" aria-describedby=\"caption-attachment-6302\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-6302\" src=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-PCB-cleaning-process.jpg\" alt=\"What is PCB cleaning process\" width=\"800\" height=\"597\" srcset=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-PCB-cleaning-process.jpg 800w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-PCB-cleaning-process-300x224.jpg 300w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-PCB-cleaning-process-768x573.jpg 768w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-PCB-cleaning-process-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-6302\" class=\"wp-caption-text\">What is PCB cleaning process<\/figcaption><\/figure>\n<h2 data-section-id=\"cwhayz\" data-start=\"539\" data-end=\"571\">Why PCB Cleaning is Important<\/h2>\n<p data-start=\"573\" data-end=\"643\">\u671f\u9593 <strong data-start=\"580\" data-end=\"596\">PCB \u7d44\u88dd<\/strong>, several contaminants can remain on the board:<\/p>\n<ul data-start=\"645\" data-end=\"785\">\n<li data-section-id=\"1wkfhio\" data-start=\"645\" data-end=\"677\">\u710a\u63a5\u7522\u751f\u7684\u52a9\u710a\u5291\u6b98\u7559\u7269<\/li>\n<li data-section-id=\"1vlyaxe\" data-start=\"678\" data-end=\"703\">Solder paste residues<\/li>\n<li data-section-id=\"5w0in0\" data-start=\"704\" data-end=\"735\">\u5875\u57c3\u548c\u7a7a\u6c23\u4e2d\u7684\u5fae\u7c92<\/li>\n<li data-section-id=\"3lje15\" data-start=\"736\" data-end=\"761\">Fingerprints and oils<\/li>\n<li data-section-id=\"1u2hrii\" data-start=\"762\" data-end=\"785\">\u96e2\u5b50\u6c61\u67d3<\/li>\n<\/ul>\n<p data-start=\"787\" data-end=\"819\">If not removed, these can cause:<\/p>\n<ul data-start=\"821\" data-end=\"943\">\n<li data-section-id=\"5zh974\" data-start=\"821\" data-end=\"834\">\u8150\u8755<\/li>\n<li data-section-id=\"1az8n55\" data-start=\"835\" data-end=\"875\">\u6f0f\u96fb\u6216\u77ed\u8def<\/li>\n<li data-section-id=\"r020a8\" data-start=\"876\" data-end=\"914\">Poor adhesion of conformal coating<\/li>\n<li data-section-id=\"a6mj3h\" data-start=\"915\" data-end=\"943\">\u7522\u54c1\u58fd\u547d\u7e2e\u77ed<\/li>\n<\/ul>\n<p data-start=\"945\" data-end=\"1013\">\ud83d\udc49 Cleaning ensures the PCB meets reliability and quality standards.<\/p>\n<p align=\"center\"><a href=\"\/zh\/%e5%8f%96%e5%be%97-pcb-%e7%b5%84%e4%bb%b6%e5%a0%b1%e5%83%b9\/\"><button style=\"background: black; color: white; padding: 8px 20px; border: none; cursor: pointer;\">\u53d6\u5f97 PCB \u7d44\u88dd\u5831\u50f9<\/button><\/a><\/p>\n<h2 data-section-id=\"ramomz\" data-start=\"1015\" data-end=\"1044\">PCB Cleaning Process Steps<\/h2>\n<h3 data-section-id=\"1b16ljr\" data-start=\"1046\" data-end=\"1070\">Pre-Clean Inspection<\/h3>\n<ul data-start=\"1072\" data-end=\"1165\">\n<li data-section-id=\"8dji4a\" data-start=\"1072\" data-end=\"1104\">Identify contamination level<\/li>\n<li data-section-id=\"tfo4cf\" data-start=\"1105\" data-end=\"1134\">Determine cleaning method<\/li>\n<li data-section-id=\"4it01q\" data-start=\"1135\" data-end=\"1165\">Check sensitive components<\/li>\n<\/ul>\n<h3 data-section-id=\"1bxf1rb\" data-start=\"1167\" data-end=\"1185\">Cleaning Stage<\/h3>\n<p data-start=\"1187\" data-end=\"1244\">The PCB is cleaned using appropriate methods (see below).<\/p>\n<h3 data-section-id=\"1xdsym8\" data-start=\"1246\" data-end=\"1257\">Rinsing<\/h3>\n<ul data-start=\"1259\" data-end=\"1345\">\n<li data-section-id=\"1nf0f56\" data-start=\"1259\" data-end=\"1309\">Removes cleaning agents and dissolved residues<\/li>\n<li data-section-id=\"7whf01\" data-start=\"1310\" data-end=\"1345\">Prevents chemical contamination<\/li>\n<\/ul>\n<h3 data-section-id=\"gp858p\" data-start=\"1347\" data-end=\"1357\">\u4e7e\u71e5<\/h3>\n<ul data-start=\"1359\" data-end=\"1424\">\n<li data-section-id=\"m0yzpd\" data-start=\"1359\" data-end=\"1390\">Ensures no moisture remains<\/li>\n<li data-section-id=\"lfsd6i\" data-start=\"1391\" data-end=\"1424\">Uses hot air or vacuum drying<\/li>\n<\/ul>\n<h3 data-section-id=\"1w0ul1w\" data-start=\"1426\" data-end=\"1446\">\u6700\u7d42\u6aa2\u67e5<\/h3>\n<ul data-start=\"1448\" data-end=\"1516\">\n<li data-section-id=\"1642w4y\" data-start=\"1448\" data-end=\"1472\">Verifies cleanliness<\/li>\n<li data-section-id=\"1n12zmd\" data-start=\"1473\" data-end=\"1516\">May include ionic contamination testing<\/li>\n<\/ul>\n<h2 data-section-id=\"r6m5sg\" data-start=\"1518\" data-end=\"1548\">Common PCB Cleaning Methods<\/h2>\n<h3 data-section-id=\"e0vuf6\" data-start=\"1550\" data-end=\"1584\">Aqueous Cleaning (Water-Based)<\/h3>\n<ul data-start=\"1586\" data-end=\"1713\">\n<li data-section-id=\"t6aufy\" data-start=\"1586\" data-end=\"1635\">Uses deionized (DI) water and cleaning agents<\/li>\n<li data-section-id=\"h68tvm\" data-start=\"1636\" data-end=\"1664\">\u74b0\u4fdd<\/li>\n<li data-section-id=\"1ne8uj2\" data-start=\"1665\" data-end=\"1713\">\u9069\u7528\u65bc\u5927\u591a\u6578 <strong data-start=\"1685\" data-end=\"1701\">SMT \u7d44\u88dd<\/strong> \u6d41\u7a0b<\/li>\n<\/ul>\n<h3 data-section-id=\"1cglm3e\" data-start=\"1715\" data-end=\"1735\">Solvent Cleaning<\/h3>\n<ul data-start=\"1737\" data-end=\"1869\">\n<li data-section-id=\"1g8q9y2\" data-start=\"1737\" data-end=\"1784\">Uses chemical solvents to dissolve residues<\/li>\n<li data-section-id=\"ovwh6y\" data-start=\"1785\" data-end=\"1824\">Effective for stubborn contaminants<\/li>\n<li data-section-id=\"12eg9bd\" data-start=\"1825\" data-end=\"1869\">\u9700\u8981\u9069\u7576\u7684\u8655\u7406\u548c\u901a\u98a8<\/li>\n<\/ul>\n<h3 data-section-id=\"39opsl\" data-start=\"1871\" data-end=\"1896\">Semi-Aqueous Cleaning<\/h3>\n<ul data-start=\"1898\" data-end=\"1978\">\n<li data-section-id=\"6u53i0\" data-start=\"1898\" data-end=\"1937\">Combines solvent and water cleaning<\/li>\n<li data-section-id=\"ushgcg\" data-start=\"1938\" data-end=\"1978\">High efficiency for complex residues<\/li>\n<\/ul>\n<h3 data-section-id=\"499qed\" data-start=\"1980\" data-end=\"2003\">Ultrasonic Cleaning<\/h3>\n<ul data-start=\"2005\" data-end=\"2126\">\n<li data-section-id=\"1vntk4q\" data-start=\"2005\" data-end=\"2040\">Uses high-frequency sound waves<\/li>\n<li data-section-id=\"1r1g9b7\" data-start=\"2041\" data-end=\"2090\">\u6e05\u9664\u96e3\u4ee5\u89f8\u53ca\u5340\u57df\u7684\u6c61\u67d3\u7269<\/li>\n<li data-section-id=\"ra9tm2\" data-start=\"2091\" data-end=\"2126\">Not suitable for all components<\/li>\n<\/ul>\n<h3 data-section-id=\"1dwdrll\" data-start=\"2128\" data-end=\"2147\">Manual Cleaning<\/h3>\n<ul data-start=\"2149\" data-end=\"2212\">\n<li data-section-id=\"1q7vsrf\" data-start=\"2149\" data-end=\"2175\">Brush + solvent method<\/li>\n<li data-section-id=\"rmyrqi\" data-start=\"2176\" data-end=\"2212\">Used for rework or small batches<\/li>\n<\/ul>\n<h2 data-section-id=\"16wclal\" data-start=\"2214\" data-end=\"2240\">Cleaning Equipment Used<\/h2>\n<ul data-start=\"2242\" data-end=\"2353\">\n<li data-section-id=\"12rnslu\" data-start=\"2242\" data-end=\"2270\">Inline cleaning machines<\/li>\n<li data-section-id=\"10fj66f\" data-start=\"2271\" data-end=\"2297\">Batch cleaning systems<\/li>\n<li data-section-id=\"f24hp9\" data-start=\"2298\" data-end=\"2323\">Spray-in-air cleaners<\/li>\n<li data-section-id=\"1cvfroo\" data-start=\"2324\" data-end=\"2353\">Ultrasonic cleaning tanks<\/li>\n<\/ul>\n<p data-start=\"2355\" data-end=\"2429\">Modern factories integrate cleaning into automated <strong data-start=\"2406\" data-end=\"2422\">PCB \u7d44\u88dd<\/strong> \u7dda\u3002.<\/p>\n<h2 data-section-id=\"7doa3w\" data-start=\"2431\" data-end=\"2463\">Standards for PCB Cleanliness<\/h2>\n<p data-start=\"2465\" data-end=\"2498\">Cleanliness is often measured by:<\/p>\n<ul data-start=\"2500\" data-end=\"2626\">\n<li data-section-id=\"1gbmskg\" data-start=\"2500\" data-end=\"2547\"><strong data-start=\"2502\" data-end=\"2545\">Ionic contamination testing (ROSE test)<\/strong><\/li>\n<li data-section-id=\"13qi92v\" data-start=\"2548\" data-end=\"2589\">\u653e\u5927\u6aa2\u8996<\/li>\n<li data-section-id=\"1ckxg05\" data-start=\"2590\" data-end=\"2626\">IPC standards (e.g., IPC-TM-650)<\/li>\n<\/ul>\n<p data-start=\"2628\" data-end=\"2688\">\ud83d\udc49 These ensure the PCB meets industry quality requirements.<\/p>\n<h2 data-section-id=\"1a941ey\" data-start=\"2690\" data-end=\"2726\">Advantages of Proper PCB Cleaning<\/h2>\n<ul data-start=\"2728\" data-end=\"2894\">\n<li data-section-id=\"j52bpb\" data-start=\"2728\" data-end=\"2763\">\u63d0\u9ad8\u96fb\u6c23\u53ef\u9760\u6027<\/li>\n<li data-section-id=\"3ebhae\" data-start=\"2764\" data-end=\"2798\">Prevents corrosion and leakage<\/li>\n<li data-section-id=\"qgq08y\" data-start=\"2799\" data-end=\"2838\">Enhances conformal coating adhesion<\/li>\n<li data-section-id=\"1hias3u\" data-start=\"2839\" data-end=\"2865\">Reduces field failures<\/li>\n<li data-section-id=\"92ww0s\" data-start=\"2866\" data-end=\"2894\">Extends product lifespan<\/li>\n<\/ul>\n<h2 data-section-id=\"1t0mo09\" data-start=\"2896\" data-end=\"2929\">When is PCB Cleaning Required?<\/h2>\n<p data-start=\"2931\" data-end=\"2968\">Cleaning is especially important for:<\/p>\n<ul data-start=\"2970\" data-end=\"3135\">\n<li data-section-id=\"rhlnyp\" data-start=\"2970\" data-end=\"3023\">High-reliability electronics (medical, aerospace)<\/li>\n<li data-section-id=\"lvb6tk\" data-start=\"3024\" data-end=\"3061\">Fine-pitch or high-density boards<\/li>\n<li data-section-id=\"1wzafyh\" data-start=\"3062\" data-end=\"3100\">Boards requiring conformal coating<\/li>\n<li data-section-id=\"18716s4\" data-start=\"3101\" data-end=\"3135\">\u60e1\u52a3\u74b0\u5883\u61c9\u7528<\/li>\n<\/ul>\n<h2 data-section-id=\"1hrrrdc\" data-start=\"3137\" data-end=\"3170\">Limitations and Considerations<\/h2>\n<ul data-start=\"3172\" data-end=\"3356\">\n<li data-section-id=\"1ul5uke\" data-start=\"3172\" data-end=\"3208\">Adds extra cost and process time<\/li>\n<li data-section-id=\"fsqsq7\" data-start=\"3209\" data-end=\"3253\">Incorrect cleaning can damage components<\/li>\n<li data-section-id=\"ta297n\" data-start=\"3254\" data-end=\"3304\">Must match cleaning method with materials used<\/li>\n<li data-section-id=\"c7xd3t\" data-start=\"3305\" data-end=\"3356\">Requires proper drying to avoid moisture issues<\/li>\n<\/ul>\n<h2 data-section-id=\"hmxhnm\" data-start=\"3358\" data-end=\"3392\">Best Practices for PCB Cleaning<\/h2>\n<ul data-start=\"3394\" data-end=\"3568\">\n<li data-section-id=\"w722m2\" data-start=\"3394\" data-end=\"3439\">Choose the right flux and cleaning method<\/li>\n<li data-section-id=\"1tdydf2\" data-start=\"3440\" data-end=\"3468\">Use DI water for rinsing<\/li>\n<li data-section-id=\"1jwqptk\" data-start=\"3469\" data-end=\"3510\">Control cleaning temperature and time<\/li>\n<li data-section-id=\"dvgod0\" data-start=\"3511\" data-end=\"3537\">Ensure complete drying<\/li>\n<li data-section-id=\"1jqatui\" data-start=\"3538\" data-end=\"3568\">Test cleanliness regularly<\/li>\n<\/ul>\n<h2 data-section-id=\"1lds1hu\" data-start=\"3570\" data-end=\"3601\">Role in PCB Assembly Process<\/h2>\n<p data-start=\"3603\" data-end=\"3642\">In a typical <strong data-start=\"3616\" data-end=\"3632\">PCB \u7d44\u88dd<\/strong> workflow:<\/p>\n<ul data-start=\"3644\" data-end=\"3793\">\n<li data-section-id=\"pp2d4h\" data-start=\"3644\" data-end=\"3695\">Performed after soldering (SMT or through-hole)<\/li>\n<li data-section-id=\"1e40yra\" data-start=\"3696\" data-end=\"3741\">Before conformal coating or final testing<\/li>\n<li data-section-id=\"33mmd5\" data-start=\"3742\" data-end=\"3793\">Ensures the board is free from harmful residues<\/li>\n<\/ul>\n<h2 data-section-id=\"8dtpi\" data-start=\"3795\" data-end=\"3808\">\u7e3d\u7d50<\/h2>\n<p data-start=\"3810\" data-end=\"4144\">The PCB cleaning process is an essential part of\u00a0<a href=\"https:\/\/txjpcba.com\/zh\/smt-%e7%b5%84%e8%a3%9d%e6%9c%8d%e5%8b%99\/\"><strong data-start=\"3880\" data-end=\"3896\">SMT \u7d44\u88dd<\/strong><\/a>, ensuring that circuit boards are free from contaminants that could compromise performance and reliability. With proper cleaning methods and quality control, manufacturers can significantly improve product durability and reduce long-term failures.<\/p>\n<p align=\"center\"><a href=\"\/zh\/%e5%8f%96%e5%be%97-pcb-%e7%b5%84%e4%bb%b6%e5%a0%b1%e5%83%b9\/\"><button style=\"background: black; color: white; padding: 8px 20px; border: none; cursor: pointer;\">\u53d6\u5f97 PCB \u7d44\u88dd\u5831\u50f9<\/button><\/a><\/p>\n<p style=\"text-align: center;\">\u9700\u8981\u5feb\u901f\u6e96\u78ba\u7684 PCB \u88dd\u914d\u5831\u50f9\uff1f\u5728\u5e7e\u79d2\u9418\u5167\u63d0\u4ea4\u60a8\u7684\u8acb\u6c42\u3002.<br \/>\n\u6211\u5011\u63d0\u4f9b\u5c08\u696d\u7684 PCB \u88dd\u914d\u670d\u52d9\uff0c\u5305\u62ec SMT\u3001DIP \u53ca\u5b8c\u6574\u7684\u7d71\u5305\u89e3\u6c7a\u65b9\u6848\u3002.<\/p>\n<p style=\"text-align: center;\">\u2714 \u63d0\u4f9b NDA \u2714 24 \u5c0f\u6642\u5167\u5feb\u901f\u5831\u50f9 \u2714 ISO \u8a8d\u8b49\u5de5\u5ee0 \u2714 \u4e00\u7ad9\u5f0f PCB &amp; PCBA \u670d\u52d9<\/p>","protected":false},"excerpt":{"rendered":"<p>PCB Cleaning Process The PCB cleaning process is a critical step in PCB Assembly that removes contaminants such as flux [&hellip;]<\/p>","protected":false},"author":1,"featured_media":6302,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[71,445],"tags":[1234,1233,1230,541,1232,1231],"class_list":["post-6301","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faqs","category-pcb-assembly-faqs","tag-electronics-cleaning-methods","tag-ionic-contamination-pcb","tag-pcb-assembly-cleaning","tag-pcb-cleaning-process","tag-pcb-contamination-removal","tag-smt-assembly-cleaning"],"_links":{"self":[{"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/posts\/6301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/comments?post=6301"}],"version-history":[{"count":2,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/posts\/6301\/revisions"}],"predecessor-version":[{"id":6304,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/posts\/6301\/revisions\/6304"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/media\/6302"}],"wp:attachment":[{"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/media?parent=6301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/categories?post=6301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/txjpcba.com\/zh\/wp-json\/wp\/v2\/tags?post=6301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}