{"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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/","title":{"rendered":"Hvordan finder man ud af, om et printkort er loddet korrekt?"},"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\">Indholdsfortegnelse<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#Why_is_PCB_Soldering_Quality_So_Important\" >Hvorfor er PCB-lodningskvalitet s\u00e5 vigtig?<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#7_Professional_PCB_Soldering_Inspection_Methods\" >7 professionelle metoder til inspektion af PCB-lodning<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#1_Visual_Inspection_ManualAOI\" >1. Visuel inspektion (manuel\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#2_X-Ray_Inspection_Detecting_Hidden_Defects\" >2.R\u00f8ntgeninspektion (opdagelse af skjulte defekter)<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#3_Flying_Probe_Testing_Electrical_Performance_Verification\" >3.Test med flyvende sonde (verificering af elektrisk ydeevne)<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#4_In-Circuit_Testing_ICT_Comprehensive_Circuit_Verification\" >4.In-Circuit Testing (ICT) (omfattende kredsl\u00f8bsverifikation)<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#5_Functional_Testing_FCT\" >5.Funktionel afpr\u00f8vning (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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#6_Thermal_Imaging_Inspection_Identifying_Overheated_Solder_Joints\" >6.Inspektion med termisk billeddannelse (identificering af overophedede loddesamlinger)<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#7_Environmental_Stress_Testing_Reliability_Verification\" >7.Milj\u00f8m\u00e6ssig stresstest (p\u00e5lidelighedsverifikation)<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#Common_Soldering_Defects_and_Solutions\" >Almindelige loddefejl og l\u00f8sninger<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#How_to_Choose_Inspection_Methods\" >Hvordan v\u00e6lger man inspektionsmetoder?<\/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\/da\/blog\/how-to-determine-if-a-pcb-is-soldered-correctly\/#Related_reading\" >Relateret l\u00e6sning<\/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>Hvorfor er PCB-lodningskvalitet s\u00e5 vigtig?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>I elektronikproduktion er PCB-lodningskvaliteten direkte afg\u00f8rende for kredsl\u00f8bets ydeevne og produktlevetid. En lille kold loddefuge eller kortslutning kan f\u00e5 hele enheden til at svigte. S\u00e5 hvordan kan vi sikre, at PCB-lodning udf\u00f8res korrekt?<\/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-lodning\" 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 metoder til inspektion af PCB-lodning<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.Visuel inspektion (manuel\/<a href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-aoi-automated-optical-inspection\/\">AOI<\/a>)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: Hurtig screening for \u00e5benlyse loddefejl<\/p><ul class=\"wp-block-list\"><li><strong>Manuel inspektion<\/strong>Kontroll\u00e9r, om loddesamlingerne er glatte, afrundede og fri for kolde loddesamlinger, revner eller loddebroer.<\/li>\n\n<li><strong>AOI (automatiseret optisk inspektion)<\/strong>Bruger h\u00f8jpr\u00e6cisionskameraer til at sammenligne loddesamlinger med standardbilleder og identificere afvigelser i st\u00f8rrelse, form eller farve. Ideel til batch-inspektion.<\/li><\/ul><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>AOI kan registrere over 80 % af overfladefejlene, men kan ikke identificere skjulte loddesamlinger som dem i BGA-komponenter.<\/p><\/blockquote><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_X-Ray_Inspection_Detecting_Hidden_Defects\"><\/span>2.R\u00f8ntgeninspektion (opdagelse af skjulte defekter)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: BGA, QFN og andre skjulte loddesamlinger<\/p><ul class=\"wp-block-list\"><li>Bruger r\u00f8ntgenstr\u00e5ler til at unders\u00f8ge interne loddesamlingsstrukturer og opdage hulrum, kolde loddesamlinger eller kugleforskydning.<\/li>\n\n<li>S\u00e6rligt velegnet til PCB'er med h\u00f8j t\u00e6thed og vurdering af mikrokomponenters loddekvalitet.<\/li><\/ul><p>Hvis du har brug for inspektion af PCB-lodning med h\u00f8j pr\u00e6cision, <a href=\"https:\/\/www.topfastpcb.com\/da\/\">TopFast printkort<\/a> tilbyder professionel r\u00f8ntgeninspektion for at sikre nul fejl i dine printkort.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Flying_Probe_Testing_Electrical_Performance_Verification\"><\/span>3.Test med flyvende sonde (verificering af elektrisk ydeevne)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: Test af sm\u00e5 partier eller prototyper<\/p><ul class=\"wp-block-list\"><li>Bruger bev\u00e6gelige prober til at m\u00e5le loddefugenes modstand - kolde loddefuger giver unormalt h\u00f8j modstand.<\/li>\n\n<li>Der er ikke brug for tilpassede armaturer; fleksibel og effektiv, men langsommere.<\/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\/da\/blog\/what-is-ict\/\">Test i kredsl\u00f8b<\/a> (ICT) (Omfattende kredsl\u00f8bsverifikation)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: Masseproduktion<\/p><ul class=\"wp-block-list\"><li>Bruger testarmaturer til at kontrollere alle komponenters tilslutning og funktionalitet.<\/li>\n\n<li>Find hurtigt kortslutninger, \u00e5bninger eller afvigelser i komponentv\u00e6rdier.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Functional_Testing_FCT\"><\/span>5.Funktionel afpr\u00f8vning (FCT)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: Endelig godkendelse af produktet<\/p><ul class=\"wp-block-list\"><li>Simulerer driftsforhold i den virkelige verden for at validere den samlede PCB-ydelse.<\/li>\n\n<li>Sikrer, at loddefejl ikke p\u00e5virker den faktiske funktionalitet.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Thermal_Imaging_Inspection_Identifying_Overheated_Solder_Joints\"><\/span>6.Inspektion med termisk billeddannelse (identificering af overophedede loddesamlinger)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: High-power printkort<\/p><ul class=\"wp-block-list\"><li>Bruger infrar\u00f8de kameraer til at registrere lokal overophedning, hvilket indikerer kolde loddefuger eller d\u00e5rlig kontakt.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Environmental_Stress_Testing_Reliability_Verification\"><\/span>7.Milj\u00f8m\u00e6ssig stresstest (p\u00e5lidelighedsverifikation)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>G\u00e6ldende scenarie<\/strong>: H\u00f8jstandardprodukter (f.eks. milit\u00e6r, bilelektronik)<\/p><ul class=\"wp-block-list\"><li>Omfatter temperaturcykling, vibrationstest osv. for at sikre loddefugenes p\u00e5lidelighed under ekstreme forhold.<\/li><\/ul><p><a href=\"https:\/\/www.topfastpcb.com\/da\/\">TopFast printkort<\/a> leverer end-to-end kvalitetskontroltjenester fra design til produktion og hj\u00e6lper dine produkter med at best\u00e5 strenge milj\u00f8test.<\/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-lodning\" 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>Almindelige loddefejl og l\u00f8sninger<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Fejltype<\/strong><\/th><th><strong>Symptomer<\/strong><\/th><th><strong>L\u00f8sning<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Koldloddet samling<\/td><td>Sl\u00f8v, l\u00f8s loddeforbindelse<\/td><td>Genlodning med korrekt temperatur- og tidskontrol<\/td><\/tr><tr><td>Loddebro<\/td><td>Kortslutning mellem tilst\u00f8dende samlinger<\/td><td>Fjern overskydende loddemetal med aflodningsfletning<\/td><\/tr><tr><td>L\u00f8ft af puder<\/td><td>Kobberfolien l\u00f8sner sig fra underlaget<\/td><td>Udskift puden, eller reparer sporet<\/td><\/tr><tr><td>Annullering<\/td><td>Indvendige bobler i loddefugen<\/td><td>Optimer temperaturprofilen for reflow-lodning<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Choose_Inspection_Methods\"><\/span>Hvordan v\u00e6lger man inspektionsmetoder?<span class=\"ez-toc-section-end\"><\/span><\/h2><p><strong>Produktion af sm\u00e5 partier<\/strong>: Test med flyvende sonde + funktionel test<br><strong>Masseproduktion<\/strong>AOI + ICT + r\u00f8ntgenpr\u00f8vetagning<br><strong>Krav til h\u00f8j p\u00e5lidelighed<\/strong>Fuld procesinspektion (AOI + r\u00f8ntgen + milj\u00f8test)<\/p><p>PCB-lodningskvalitet er livlinen for elektroniske produkter.Ved at kombinere flere inspektionsmetoder kan du kontrollere loddefejl og sikre kredsl\u00f8bets h\u00f8je p\u00e5lidelighed. Hvis du er p\u00e5 udkig efter professionel PCB-fremstilling og -inspektion, kan du kontakte <a href=\"https:\/\/www.topfastpcb.com\/da\/about\/\">TopFast<\/a> PCB-team, og vi vil give dig en one-stop-l\u00f8sning!<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Related_reading\"><\/span>Relateret l\u00e6sning<span class=\"ez-toc-section-end\"><\/span><\/h2><p><a href=\"https:\/\/www.topfastpcb.com\/da\/blog\/welding-flaw-detection\/\">Registrering af fejl i PCB-svejsning<br><\/a><a href=\"https:\/\/www.topfastpcb.com\/da\/blog\/solder-paste-inspection\/\">Inspektion af loddepasta<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>PCB-lodningskvalitet p\u00e5virker direkte elektroniske produkters ydeevne og p\u00e5lidelighed. Professionelle testmetoder (s\u00e5som AOI, r\u00f8ntgen, flying probe-test osv.) hj\u00e6lper dig med pr\u00e6cist at identificere loddeproblemer og levere l\u00f8sninger for at sikre PCB-produktion af h\u00f8j kvalitet.<\/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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