{"id":6546,"date":"2026-05-13T14:36:33","date_gmt":"2026-05-13T06:36:33","guid":{"rendered":"https:\/\/txjpcba.com\/?p=6546"},"modified":"2026-05-13T14:36:33","modified_gmt":"2026-05-13T06:36:33","slug":"what-testing-methods-do-you-use","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/de\/what-testing-methods-do-you-use\/","title":{"rendered":"What testing methods do you use?"},"content":{"rendered":"<h2 data-section-id=\"kavyrw\" data-start=\"35\" data-end=\"77\">Testing methods<\/h2>\n<p data-start=\"78\" data-end=\"299\">Testing is a fundamental part of ensuring reliability and performance in <a href=\"https:\/\/txjpcba.com\/de\/leiterplattenbestuckung\/\"><strong>PCB-Montage<\/strong><\/a>. Even with advanced SMT Assembly processes, defects can still occur due to component issues, soldering problems, or design limitations.<\/p>\n<p data-start=\"301\" data-end=\"580\">A comprehensive testing strategy ensures that faults are detected early, reducing rework costs and preventing defective products from reaching customers. In modern electronics manufacturing, multiple testing methods are combined to achieve the highest level of quality assurance.<\/p>\n<figure id=\"attachment_6547\" aria-describedby=\"caption-attachment-6547\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-6547\" src=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/05\/What-testing-methods-do-you-use.jpg\" alt=\"What testing methods do you use\" width=\"800\" height=\"597\" srcset=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/05\/What-testing-methods-do-you-use.jpg 800w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/05\/What-testing-methods-do-you-use-300x224.jpg 300w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/05\/What-testing-methods-do-you-use-768x573.jpg 768w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/05\/What-testing-methods-do-you-use-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-6547\" class=\"wp-caption-text\">What testing methods do you use<\/figcaption><\/figure>\n<h2 data-section-id=\"15zkz0g\" data-start=\"582\" data-end=\"614\">Solder paste inspection (SPI)<\/h2>\n<p data-start=\"615\" data-end=\"775\">Solder Paste Inspection is the first quality checkpoint in SMT Assembly. It is performed immediately after solder paste printing and before component placement.<\/p>\n<p data-start=\"777\" data-end=\"797\">SPI systems measure:<\/p>\n<ul data-start=\"798\" data-end=\"870\">\n<li data-section-id=\"1lbcnlc\" data-start=\"798\" data-end=\"821\">Solder paste volume<\/li>\n<li data-section-id=\"13t0b20\" data-start=\"822\" data-end=\"847\">Paste height and area<\/li>\n<li data-section-id=\"1lg2l6y\" data-start=\"848\" data-end=\"870\">Alignment accuracy<\/li>\n<\/ul>\n<p data-start=\"872\" data-end=\"1022\">By identifying insufficient or excessive solder early, SPI prevents defects such as tombstoning, bridging, and weak solder joints during PCB Assembly.<\/p>\n<p align=\"center\"><a href=\"\/de\/angebot-fur-leiterplattenbestuckung-einholen\/\"><button style=\"background: black; color: white; padding: 8px 20px; border: none; cursor: pointer;\">Angebot f\u00fcr PCB-Best\u00fcckung einholen<\/button><\/a><\/p>\n<h2 data-section-id=\"tft95z\" data-start=\"1024\" data-end=\"1061\">Automatisierte optische Inspektion (AOI)<\/h2>\n<p data-start=\"1062\" data-end=\"1252\">Automated Optical Inspection is one of the most widely used testing methods in PCB Assembly. It uses high-resolution cameras to detect visual defects after component placement and soldering.<\/p>\n<p data-start=\"1254\" data-end=\"1271\">AOI can identify:<\/p>\n<ul data-start=\"1272\" data-end=\"1393\">\n<li data-section-id=\"1ybd368\" data-start=\"1272\" data-end=\"1294\">Fehlende Komponenten<\/li>\n<li data-section-id=\"13cqz76\" data-start=\"1295\" data-end=\"1330\">Misalignment or polarity errors<\/li>\n<li data-section-id=\"1a6b576\" data-start=\"1331\" data-end=\"1373\">Solder bridges and insufficient solder<\/li>\n<li data-section-id=\"16x8cqj\" data-start=\"1374\" data-end=\"1393\">Surface defects<\/li>\n<\/ul>\n<p data-start=\"1395\" data-end=\"1489\">It is commonly used both before and after reflow in <a href=\"https:\/\/txjpcba.com\/de\/smt-montage-dienstleistungen\/\"><strong>SMT-Best\u00fcckung<\/strong><\/a> to ensure consistent quality.<\/p>\n<h2 data-section-id=\"19kvsf8\" data-start=\"1491\" data-end=\"1510\">R\u00f6ntgeninspektion<\/h2>\n<p data-start=\"1511\" data-end=\"1704\">X-ray inspection is essential for detecting hidden defects that cannot be seen with optical systems. It is especially important for complex components such as BGAs, QFNs, and multilayer boards.<\/p>\n<p data-start=\"1706\" data-end=\"1735\">X-ray testing helps identify:<\/p>\n<ul data-start=\"1736\" data-end=\"1839\">\n<li data-section-id=\"3c208m\" data-start=\"1736\" data-end=\"1771\">Void formation in solder joints<\/li>\n<li data-section-id=\"1iudhui\" data-start=\"1772\" data-end=\"1807\">Hidden bridges under components<\/li>\n<li data-section-id=\"1rovla7\" data-start=\"1808\" data-end=\"1839\">Internal connection defects<\/li>\n<\/ul>\n<p data-start=\"1841\" data-end=\"1950\">This method provides deep visibility into PCB Assembly quality and is critical for high-reliability products.<\/p>\n<h2 data-section-id=\"i9kiol\" data-start=\"1952\" data-end=\"1979\">In-circuit testing (ICT)<\/h2>\n<p data-start=\"1980\" data-end=\"2099\">In-Circuit Testing checks the electrical performance of individual components on a PCB after SMT Assembly is completed.<\/p>\n<p data-start=\"2101\" data-end=\"2114\">ICT verifies:<\/p>\n<ul data-start=\"2115\" data-end=\"2235\">\n<li data-section-id=\"1p0kvd1\" data-start=\"2115\" data-end=\"2167\">Component values (resistance, capacitance, etc.)<\/li>\n<li data-section-id=\"8w0lxh\" data-start=\"2168\" data-end=\"2204\">Short circuits and open circuits<\/li>\n<li data-section-id=\"sib6qs\" data-start=\"2205\" data-end=\"2235\">Proper component placement<\/li>\n<\/ul>\n<p data-start=\"2237\" data-end=\"2352\">This method ensures that each part of the circuit functions correctly before the board moves to functional testing.<\/p>\n<h2 data-section-id=\"14szh1o\" data-start=\"2354\" data-end=\"2381\">Functional testing (FCT)<\/h2>\n<p data-start=\"2382\" data-end=\"2480\">Functional Testing evaluates how the fully assembled PCB performs under real operating conditions.<\/p>\n<p data-start=\"2482\" data-end=\"2581\">During FCT, the board is powered on and tested based on its intended application. This may include:<\/p>\n<ul data-start=\"2582\" data-end=\"2660\">\n<li data-section-id=\"10kmu6n\" data-start=\"2582\" data-end=\"2605\">Signal verification<\/li>\n<li data-section-id=\"1bppcta\" data-start=\"2606\" data-end=\"2631\">Communication testing<\/li>\n<li data-section-id=\"131ux16\" data-start=\"2632\" data-end=\"2660\">Power performance checks<\/li>\n<\/ul>\n<p data-start=\"2662\" data-end=\"2781\">Functional testing ensures the PCB Assembly meets end-use requirements and behaves as expected in real-world scenarios.<\/p>\n<h2 data-section-id=\"94jtvu\" data-start=\"2783\" data-end=\"2806\">Flying probe testing<\/h2>\n<p data-start=\"2807\" data-end=\"2927\">Flying Probe Testing is an alternative to ICT, especially suitable for low-volume production and prototype PCB Assembly.<\/p>\n<p data-start=\"2929\" data-end=\"3041\">It uses movable probes to test electrical connections without requiring a dedicated test fixture. This makes it:<\/p>\n<ul data-start=\"3042\" data-end=\"3142\">\n<li data-section-id=\"1sczm5d\" data-start=\"3042\" data-end=\"3073\">Flexible for design changes<\/li>\n<li data-section-id=\"hrah65\" data-start=\"3074\" data-end=\"3110\">Cost-effective for small batches<\/li>\n<li data-section-id=\"h07egj\" data-start=\"3111\" data-end=\"3142\">Ideal for rapid prototyping<\/li>\n<\/ul>\n<p data-start=\"3144\" data-end=\"3230\">Although slower than ICT, it is highly accurate and efficient for early-stage testing.<\/p>\n<h2 data-section-id=\"126ag1e\" data-start=\"3232\" data-end=\"3250\">Burn-in testing<\/h2>\n<p data-start=\"3251\" data-end=\"3408\">Burn-in testing is used to identify early-life failures by running the PCB under elevated stress conditions such as high temperature or continuous operation.<\/p>\n<p data-start=\"3410\" data-end=\"3435\">This method helps detect:<\/p>\n<ul data-start=\"3436\" data-end=\"3510\">\n<li data-section-id=\"zrc5bg\" data-start=\"3436\" data-end=\"3455\">Weak components<\/li>\n<li data-section-id=\"1n0fdgr\" data-start=\"3456\" data-end=\"3486\">Thermal instability issues<\/li>\n<li data-section-id=\"16tbm9n\" data-start=\"3487\" data-end=\"3510\">Early failure risks<\/li>\n<\/ul>\n<p data-start=\"3512\" data-end=\"3626\">Burn-in testing is often used for high-reliability industries like automotive, aerospace, and medical electronics.<\/p>\n<h2 data-section-id=\"1u5zab4\" data-start=\"3628\" data-end=\"3668\">Umwelt- und Zuverl\u00e4ssigkeitspr\u00fcfungen<\/h2>\n<p data-start=\"3669\" data-end=\"3756\">For products that must operate in harsh conditions, environmental testing is essential.<\/p>\n<p data-start=\"3758\" data-end=\"3772\">This includes:<\/p>\n<ul data-start=\"3773\" data-end=\"3851\">\n<li data-section-id=\"9o3bbn\" data-start=\"3773\" data-end=\"3798\">Thermal cycling tests<\/li>\n<li data-section-id=\"7pqbev\" data-start=\"3799\" data-end=\"3819\">Pr\u00fcfung der Luftfeuchtigkeit<\/li>\n<li data-section-id=\"1au7e4b\" data-start=\"3820\" data-end=\"3851\">Vibration and shock testing<\/li>\n<\/ul>\n<p data-start=\"3853\" data-end=\"3961\">These tests ensure that PCB Assembly products can withstand real-world environmental stress without failure.<\/p>\n<h2 data-section-id=\"19a3vkq\" data-start=\"3963\" data-end=\"3990\">Final quality inspection<\/h2>\n<p data-start=\"3991\" data-end=\"4140\">Before shipment, all boards go through a final inspection process. This includes visual checks, documentation verification, and packaging inspection.<\/p>\n<p data-start=\"4142\" data-end=\"4160\">This step ensures:<\/p>\n<ul data-start=\"4161\" data-end=\"4271\">\n<li data-section-id=\"igz7ek\" data-start=\"4161\" data-end=\"4186\">No defects are missed<\/li>\n<li data-section-id=\"yrq9k8\" data-start=\"4187\" data-end=\"4229\">All testing requirements are completed<\/li>\n<li data-section-id=\"de04bn\" data-start=\"4230\" data-end=\"4271\">Products meet customer specifications<\/li>\n<\/ul>\n<p data-start=\"4273\" data-end=\"4332\">It acts as the final safeguard in the PCB Assembly process.<\/p>\n<h2 data-section-id=\"11srsff\" data-start=\"4334\" data-end=\"4371\">Combining multiple testing methods<\/h2>\n<p data-start=\"4372\" data-end=\"4527\">No single testing method can guarantee complete quality assurance. That is why professional SMT Assembly providers use a combination of testing techniques.<\/p>\n<p data-start=\"4529\" data-end=\"4559\">A typical process may include:<\/p>\n<ul data-start=\"4560\" data-end=\"4593\">\n<li data-section-id=\"ob12c5\" data-start=\"4560\" data-end=\"4593\">SPI \u2192 AOI \u2192 X-ray \u2192 ICT \u2192 FCT<\/li>\n<\/ul>\n<p data-start=\"4595\" data-end=\"4737\">This layered approach ensures that defects are detected at different stages, improving overall product reliability and reducing failure rates.<\/p>\n<h2 data-section-id=\"8dtpi\" data-start=\"4739\" data-end=\"4752\">Schlussfolgerung<\/h2>\n<p data-start=\"4753\" data-end=\"4954\">PCB assembly quality depends heavily on a robust and multi-layered testing strategy. From solder paste inspection to functional testing, each method plays a unique role in ensuring product performance.<\/p>\n<p data-start=\"4956\" data-end=\"5167\">By integrating advanced testing technologies into PCB Assembly and SMT Assembly processes, manufacturers can deliver reliable, high-quality products that meet strict industry standards and customer expectations.<\/p>\n<p align=\"center\"><a href=\"\/de\/angebot-fur-leiterplattenbestuckung-einholen\/\"><button style=\"background: black; color: white; padding: 8px 20px; border: none; cursor: pointer;\">Angebot f\u00fcr PCB-Best\u00fcckung einholen<\/button><\/a><\/p>\n<p style=\"text-align: center;\">Ben\u00f6tigen Sie Hilfe bei den Preisen und Vorlaufzeiten f\u00fcr die PCB-Best\u00fcckung? Fordern Sie noch heute Ihr Angebot an.<br \/>\nWir bieten professionelle PCB-Best\u00fcckungsdienstleistungen, einschlie\u00dflich SMT, DIP und schl\u00fcsselfertige L\u00f6sungen.<\/p>\n<p style=\"text-align: center;\">\u2714 NDA verf\u00fcgbar \u2714 Schnelles Angebot innerhalb von 24 Stunden \u2714 ISO-zertifizierte Fabrik \u2714 PCB &amp; PCBA Service aus einer Hand<\/p>","protected":false},"excerpt":{"rendered":"<p>Testing methods Testing is a fundamental part of ensuring reliability and performance in PCB Assembly. Even with advanced SMT Assembly [&hellip;]<\/p>","protected":false},"author":1,"featured_media":6547,"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":[1664,1659,1663,1662,1661,1660,1665,1657,1658,1203],"class_list":["post-6546","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faqs","category-pcb-assembly-faqs","tag-burn-in-testing-electronics-manufacturing","tag-electronics-testing-process-pcba","tag-flying-probe-test-pcb","tag-functional-test-electronics-board","tag-in-circuit-test-pcb-assembly","tag-pcb-quality-verification-methods","tag-pcb-reliability-testing-solutions","tag-pcb-testing-methods-list","tag-smt-inspection-techniques-explained","tag-x-ray-inspection-pcb-assembly"],"_links":{"self":[{"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/posts\/6546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/comments?post=6546"}],"version-history":[{"count":2,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/posts\/6546\/revisions"}],"predecessor-version":[{"id":6549,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/posts\/6546\/revisions\/6549"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/media\/6547"}],"wp:attachment":[{"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/media?parent=6546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/categories?post=6546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/txjpcba.com\/de\/wp-json\/wp\/v2\/tags?post=6546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}