{"id":3532,"date":"2025-07-04T11:21:09","date_gmt":"2025-07-04T03:21:09","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=3532"},"modified":"2025-07-04T11:23:28","modified_gmt":"2025-07-04T03:23:28","slug":"how-to-determine-if-a-pcb-is-soldered-correctly","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/","title":{"rendered":"Wie kann man feststellen, ob eine Leiterplatte richtig gel\u00f6tet ist?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Inhalts\u00fcbersicht<\/p>\n<span class=\"ez-toc-title-toggle\"><\/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.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#Why_is_PCB_Soldering_Quality_So_Important\" >Warum ist die Qualit\u00e4t des PCB-L\u00f6tens so wichtig?<\/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.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#7_Professional_PCB_Soldering_Inspection_Methods\" >7 Professionelle PCB-L\u00f6tinspektionsmethoden<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#1_Visual_Inspection_ManualAOI\" >1. Visuelle Inspektion (manuell\/AOI)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#2_X-Ray_Inspection_Detecting_Hidden_Defects\" >2.R\u00f6ntgeninspektion (Aufsp\u00fcren versteckter M\u00e4ngel)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#3_Flying_Probe_Testing_Electrical_Performance_Verification\" >3.Flying Probe Testing (\u00dcberpr\u00fcfung der elektrischen Leistung)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#4_In-Circuit_Testing_ICT_Comprehensive_Circuit_Verification\" >4.In-Circuit Testing (ICT) (Umfassende Schaltungspr\u00fcfung)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#5_Functional_Testing_FCT\" >5.Funktionspr\u00fcfung (FCT)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#6_Thermal_Imaging_Inspection_Identifying_Overheated_Solder_Joints\" >6.W\u00e4rmebildinspektion (Identifizierung von \u00fcberhitzten L\u00f6tstellen)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#7_Environmental_Stress_Testing_Reliability_Verification\" >7.Umweltbelastungstests (Zuverl\u00e4ssigkeits\u00fcberpr\u00fcfung)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#Common_Soldering_Defects_and_Solutions\" >H\u00e4ufige L\u00f6tfehler und L\u00f6sungen<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#How_to_Choose_Inspection_Methods\" >Wie w\u00e4hlt man Inspektionsmethoden aus?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#Related_reading\" >Verwandte Lekt\u00fcre<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_is_PCB_Soldering_Quality_So_Important\"><\/span>Warum ist die Qualit\u00e4t des PCB-L\u00f6tens so wichtig?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>In der Elektronikfertigung entscheidet die Qualit\u00e4t der L\u00f6tstellen direkt \u00fcber die Leistung und Lebensdauer von Leiterplatten. Eine winzige kalte L\u00f6tstelle oder ein Kurzschluss kann zum Ausfall des gesamten Ger\u00e4ts f\u00fchren. Wie k\u00f6nnen wir also sicherstellen, dass das L\u00f6ten von Leiterplatten korrekt ausgef\u00fchrt wird?<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-4.jpg\" alt=\"PCB-L\u00f6ten\" class=\"wp-image-3533\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-4.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-4-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-4-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Professional_PCB_Soldering_Inspection_Methods\"><\/span>7 Professionelle PCB-L\u00f6tinspektionsmethoden<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Visual_Inspection_ManualAOI\"><\/span>1.Visuelle Inspektion (manuell\/<a href=\"https:\/\/www.topfastpcb.com\/de\/blog\/what-is-aoi-automated-optical-inspection\/\">AOI<\/a>)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: Schnelles Screening auf offensichtliche L\u00f6tfehler<\/p><ul class=\"wp-block-list\"><li><strong>Manuelle Inspektion<\/strong>Pr\u00fcfen Sie, ob die L\u00f6tstellen glatt, abgerundet und frei von kalten L\u00f6tstellen, Rissen oder L\u00f6tbr\u00fccken sind.<\/li>\n\n<li><strong>AOI (Automatisierte optische Inspektion)<\/strong>Verwendet hochpr\u00e4zise Kameras, um L\u00f6tstellen mit Standardbildern zu vergleichen und Anomalien in Gr\u00f6\u00dfe, Form oder Farbe zu erkennen. Ideal f\u00fcr die Chargenpr\u00fcfung.<\/li><\/ul><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Die AOI kann \u00fcber 80 % der Oberfl\u00e4chenfehler erkennen, nicht aber versteckte L\u00f6tstellen wie bei BGA-Bauteilen.<\/p><\/blockquote><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_X-Ray_Inspection_Detecting_Hidden_Defects\"><\/span>2.R\u00f6ntgeninspektion (Aufsp\u00fcren versteckter M\u00e4ngel)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: BGA, QFN und andere verdeckte L\u00f6tstellen<\/p><ul class=\"wp-block-list\"><li>Untersucht mit R\u00f6ntgenstrahlen die inneren Strukturen von L\u00f6tstellen, um Hohlr\u00e4ume, kalte L\u00f6tstellen oder eine falsche Ausrichtung der Kugeln zu erkennen.<\/li>\n\n<li>Besonders geeignet f\u00fcr Leiterplatten mit hoher Packungsdichte und f\u00fcr die Beurteilung der L\u00f6tqualit\u00e4t von Mikrobauteilen.<\/li><\/ul><p>Wenn Sie hochpr\u00e4zise PCB-L\u00f6tinspektionsdienste ben\u00f6tigen, <a href=\"https:\/\/www.topfastpcb.com\/de\/\">TopFast PCB<\/a> bietet eine professionelle R\u00f6ntgeninspektion an, um die Fehlerfreiheit Ihrer Leiterplatten zu gew\u00e4hrleisten.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Flying_Probe_Testing_Electrical_Performance_Verification\"><\/span>3.Flying Probe Testing (\u00dcberpr\u00fcfung der elektrischen Leistung)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: Testen von Kleinserien oder Prototypen<\/p><ul class=\"wp-block-list\"><li>Verwendet bewegliche Sonden zur Messung des L\u00f6tstellenwiderstands - kalte L\u00f6tstellen f\u00fchren zu einem ungew\u00f6hnlich hohen Widerstand.<\/li>\n\n<li>Keine speziellen Vorrichtungen erforderlich; flexibel und effizient, aber langsamer.<\/li><\/ul><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-6.jpg\" alt=\"\" class=\"wp-image-3536\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-6.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-6-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-6-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_In-Circuit_Testing_ICT_Comprehensive_Circuit_Verification\"><\/span>4. <a href=\"https:\/\/www.topfastpcb.com\/de\/blog\/what-is-ict\/\">In-Circuit-Pr\u00fcfung<\/a> (ICT) (Umfassende Schaltkreis\u00fcberpr\u00fcfung)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: Massenproduktion<\/p><ul class=\"wp-block-list\"><li>Verwendet Testvorrichtungen, um die Konnektivit\u00e4t und Funktionalit\u00e4t aller Komponenten zu \u00fcberpr\u00fcfen.<\/li>\n\n<li>Schnelles Auffinden von Kurzschl\u00fcssen, Unterbrechungen oder Bauteilwertabweichungen.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Functional_Testing_FCT\"><\/span>5.Funktionspr\u00fcfung (FCT)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: Endabnahme des Produkts<\/p><ul class=\"wp-block-list\"><li>Simuliert reale Betriebsbedingungen, um die Gesamtleistung der Leiterplatte zu \u00fcberpr\u00fcfen.<\/li>\n\n<li>Stellt sicher, dass L\u00f6tfehler die tats\u00e4chliche Funktionalit\u00e4t nicht beeintr\u00e4chtigen.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Thermal_Imaging_Inspection_Identifying_Overheated_Solder_Joints\"><\/span>6.W\u00e4rmebildinspektion (Identifizierung von \u00fcberhitzten L\u00f6tstellen)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: Leistungsstarke Leiterplatten<\/p><ul class=\"wp-block-list\"><li>Verwendet Infrarotkameras, um lokale \u00dcberhitzungen zu erkennen, die auf kalte L\u00f6tstellen oder schlechten Kontakt hinweisen.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Environmental_Stress_Testing_Reliability_Verification\"><\/span>7.Umweltbelastungstests (Zuverl\u00e4ssigkeits\u00fcberpr\u00fcfung)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Anwendbares Szenario<\/strong>: Hochwertige Produkte (z. B. Milit\u00e4r, Automobilelektronik)<\/p><ul class=\"wp-block-list\"><li>Dazu geh\u00f6ren Temperaturwechsel, Vibrationstests usw., um die Zuverl\u00e4ssigkeit der L\u00f6tstellen unter extremen Bedingungen zu gew\u00e4hrleisten.<\/li><\/ul><p><a href=\"https:\/\/www.topfastpcb.com\/de\/\">TopFast PCB<\/a> bietet durchgehende Qualit\u00e4tskontrolldienste vom Entwurf bis zur Produktion und hilft Ihren Produkten, strenge Umwelttests zu bestehen.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-5.jpg\" alt=\"PCB-L\u00f6ten\" class=\"wp-image-3534\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-5.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-5-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-soldering-5-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Soldering_Defects_and_Solutions\"><\/span>H\u00e4ufige L\u00f6tfehler und L\u00f6sungen<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Defekt Typ<\/strong><\/th><th><strong>Symptome<\/strong><\/th><th><strong>L\u00f6sung<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Kaltl\u00f6tverbindung<\/td><td>Stumpfe, lose L\u00f6tstelle<\/td><td>Erneutes L\u00f6ten mit angemessener Temperatur- und Zeitkontrolle<\/td><\/tr><tr><td>L\u00f6tbr\u00fccke<\/td><td>Kurzschluss zwischen benachbarten Verbindungen<\/td><td>\u00dcbersch\u00fcssiges Lot mit Entl\u00f6tlitze entfernen<\/td><\/tr><tr><td>Pad Heben<\/td><td>Kupferfolie l\u00f6st sich vom Substrat<\/td><td>Ersetzen Sie das Pad oder reparieren Sie die Leiterbahn<\/td><\/tr><tr><td>Entleerung<\/td><td>Innere Blasen in der L\u00f6tstelle<\/td><td>Optimieren Sie das Temperaturprofil f\u00fcr das Reflow-L\u00f6ten<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Choose_Inspection_Methods\"><\/span>Wie w\u00e4hlt man Inspektionsmethoden aus?<span class=\"ez-toc-section-end\"><\/span><\/h2><p><strong>Kleinserienproduktion<\/strong>: Flying-Probe-Pr\u00fcfung + Funktionspr\u00fcfung<br><strong>Massenproduktion<\/strong>AOI + ICT + R\u00f6ntgenprobenahme<br><strong>Hohe Zuverl\u00e4ssigkeitsanforderungen<\/strong>Vollprozesspr\u00fcfung (AOI + R\u00f6ntgen + Umweltpr\u00fcfung)<\/p><p>Die L\u00f6tqualit\u00e4t von Leiterplatten ist die Lebensader von Elektronikprodukten.Durch die Kombination mehrerer Pr\u00fcfverfahren k\u00f6nnen Sie L\u00f6tfehler umfassend kontrollieren und die hohe Zuverl\u00e4ssigkeit von Leiterplatten sicherstellen. Wenn Sie auf der Suche nach professionellen Dienstleistungen im Bereich der Leiterplattenherstellung und -pr\u00fcfung sind, wenden Sie sich an die <a href=\"https:\/\/www.topfastpcb.com\/de\/about\/\">TopFast<\/a> PCB-Team, und wir bieten Ihnen eine L\u00f6sung aus einer Hand!<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Related_reading\"><\/span>Verwandte Lekt\u00fcre<span class=\"ez-toc-section-end\"><\/span><\/h2><p><a href=\"https:\/\/www.topfastpcb.com\/de\/blog\/welding-flaw-detection\/\">Erkennung von PCB-Schwei\u00dffehlern<br><\/a><a href=\"https:\/\/www.topfastpcb.com\/de\/blog\/solder-paste-inspection\/\">Inspektion von L\u00f6tpaste<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Die Qualit\u00e4t des L\u00f6tens von Leiterplatten wirkt sich direkt auf die Leistung und Zuverl\u00e4ssigkeit elektronischer Produkte aus. Professionelle Pr\u00fcfverfahren (z. B. AOI, R\u00f6ntgen, Flying-Probe-Pr\u00fcfung usw.) helfen Ihnen bei der genauen Identifizierung von L\u00f6tproblemen und bieten L\u00f6sungen f\u00fcr eine hochwertige Leiterplattenproduktion.<\/p>","protected":false},"author":1,"featured_media":3535,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[315],"class_list":["post-3532","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq","tag-pcb-soldering"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to determine if a PCB is soldered correctly? - Topfastpcb<\/title>\n<meta name=\"description\" content=\"Want to know how to determine if PCB soldering is correct? 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