{"id":3636,"date":"2025-07-15T14:42:44","date_gmt":"2025-07-15T06:42:44","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=3636"},"modified":"2025-07-15T15:01:35","modified_gmt":"2025-07-15T07:01:35","slug":"what-is-the-shelf-life-of-pcb","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/","title":{"rendered":"Hvad er holdbarheden af PCB?"},"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\/what-is-the-shelf-life-of-pcb\/#Factors_affecting_the_shelf_life_of_PCB\" >Faktorer, der p\u00e5virker holdbarheden af PCB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Surface_treatment_process\" >Proces for overfladebehandling<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Storage_conditions\" >Opbevaringsforhold<\/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\/what-is-the-shelf-life-of-pcb\/#Material_properties\" >Materialeegenskaber<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Expired_PCB_Disposal_Methods\" >Metoder til bortskaffelse af udg\u00e5et PCB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Failure_Mode_Analysis\" >Analyse af fejltilstand<\/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\/what-is-the-shelf-life-of-pcb\/#Tiered_Handling_Solutions\" >L\u00f8sninger til h\u00e5ndtering p\u00e5 flere niveauer<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Engineering_Practices_to_Extend_PCB_Shelf_Life\" >Tekniske metoder til at forl\u00e6nge PCB's holdbarhed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Advanced_Packaging_Technology\" >Avanceret emballageteknologi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Optimized_Surface_Finish_Selection\" >Optimeret valg af overfladefinish<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Smart_Monitoring_Systems\" >Smarte overv\u00e5gningssystemer<\/a><\/li><\/ul><\/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\/what-is-the-shelf-life-of-pcb\/#Risk_Assessment_for_Using_Expired_PCBs\" >Risikovurdering for brug af udg\u00e5et PCB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Mandatory_Inspection_Items\" >Obligatoriske inspektionspunkter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/what-is-the-shelf-life-of-pcb\/#Risk_Mitigation_Measures\" >Risikobegr\u00e6nsende foranstaltninger<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Factors_affecting_the_shelf_life_of_PCB\"><\/span>Faktorer, der p\u00e5virker holdbarheden af PCB<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Surface_treatment_process\"><\/span>Proces for overfladebehandling<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Overfladen p\u00e5 et printkort afg\u00f8r, hvor l\u00e6nge det kan holde p\u00e5 hylden. Der er store forskelle i modstandsdygtigheden over for oxidation og beskyttelse mod fugt.<\/p><ul class=\"wp-block-list\"><li><strong>HASL (Hot Air Solder Leveling): <\/strong>Det er en velkendt proces, men den virker kun i cirka seks m\u00e5neder og kan nogle gange f\u00f8re til dannelse af tinoxid.<\/li>\n\n<li><strong>ENIG (Electroless Nickel Immersion Gold)<\/strong>: 12 m\u00e5neders holdbarhed, risiko for \"sort pude\" p\u00e5 grund af nikkeldiffusion<\/li>\n\n<li><strong>Neds\u00e6nket s\u00f8lv<\/strong>: Kun 3 m\u00e5neders holdbarhed, hvilket \u00f8ger risikoen for s\u00f8lvmigration over tid<\/li>\n\n<li><strong>OSP (organisk konserveringsmiddel for loddeevne)<\/strong>: 3-6 m\u00e5neder, kr\u00e6ver luftt\u00e6t forsegling for at forhindre nedbrydning<\/li>\n\n<li><strong>H\u00e5rd guldbel\u00e6gning<\/strong>: Til s\u00e6rlige anvendelser, holdbarhed op til 24 m\u00e5neder<\/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-shelf-life-1.jpg\" alt=\"PCB&#039;s holdbarhed\" class=\"wp-image-3640\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Storage_conditions\"><\/span>Opbevaringsforhold<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Lagringsmilj\u00f8er, der er i overensstemmelse med IPC-1601-standarderne, skal opfylde:<\/p><ul class=\"wp-block-list\"><li><strong>Kontrol af temperatur og luftfugtighed<\/strong>:<\/li>\n\n<li>Optimalt temperaturomr\u00e5de: 20\u00b15\u00b0C (ekstreme temperaturer m\u00e5 ikke overstige 15-30\u00b0C)<\/li>\n\n<li>Krav til luftfugtighed: 30-50% RH (maksimum 70%)<\/li>\n\n<li><strong>Standarder for emballage<\/strong>:<\/li>\n\n<li>Vakuumforseglede aluminiumsposer med &lt;5% fugtighedsindikatorkort<\/li>\n\n<li>Brug af t\u00f8rremiddel \u226520 g\/m\u00b3 af emballagevolumen<\/li>\n\n<li><strong>Beskyttelse mod lys<\/strong>: UV-eksponering fremskynder nedbrydning af OSP-film<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Material_properties\"><\/span>Materialeegenskaber<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Standard FR-4-plader<\/strong>: Teoretisk levetid p\u00e5 5-10 \u00e5r (u\u00e5bnet)<\/li>\n\n<li><strong>H\u00f8jfrekvente materialer (f.eks. PTFE)<\/strong>: Skal bruges inden for 3 \u00e5r<\/li>\n\n<li><strong>HDI-kort<\/strong>: Kortere holdbarhed (20%-reduktion) p\u00e5 grund af tyndere dielektriske lag<\/li>\n\n<li><strong>Tunge kobberplader (\u22653oz)<\/strong>: Kr\u00e6ver s\u00e6rlig opm\u00e6rksomhed p\u00e5 risikoen for oxidering af det indre lag<\/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-shelf-life-1-1.jpg\" alt=\"PCB&#039;s holdbarhed\" class=\"wp-image-3641\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-1-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-1-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-1-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><p>Har du brug for en professionel vurdering af PCB's holdbarhed? <a href=\"https:\/\/www.topfastpcb.com\/da\/contact\/\">Kontakt vores team af p\u00e5lidelighedsteknikere for en gratis vurdering<\/a>.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Expired_PCB_Disposal_Methods\"><\/span>Metoder til bortskaffelse af udg\u00e5et PCB<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Failure_Mode_Analysis\"><\/span>Analyse af fejltilstand<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Oxidation af metallag<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Nikkeldiffusion til guldlag i ENIG-plader (&gt;12 m\u00e5neder)<\/li>\n\n<li>\u00d8get risiko for tin whisker i HASL-plader<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Nedbrydning af substrat<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Hydrolyse af harpiks reducerer Tg-v\u00e6rdien<\/li>\n\n<li>Bindingsstyrken mellem lagene falder med \u226515% (IPC-TM-650 test)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Risici for absorbering af fugt<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Nedgradering af MSL-rating (f.eks. fra MSL3 til MSL2)<\/li>\n\n<li>Damptrykket overskrider substratets gr\u00e6nser under reflow<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tiered_Handling_Solutions\"><\/span>L\u00f8sninger til h\u00e5ndtering p\u00e5 flere niveauer<span class=\"ez-toc-section-end\"><\/span><\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Overskredet varighed<\/th><th>Behandlingsproces<\/th><th>Punkter til kvalitetskontrol<\/th><\/tr><\/thead><tbody><tr><td>\u22642 m\u00e5neder<\/td><td>120\u00b0C\/1 time bagning<\/td><td>Fugtindhold efter bagning &lt;0,1%<\/td><\/tr><tr><td>2-6 m\u00e5neder<\/td><td>120\u00b0C\/2 timers trinvis bagning<\/td><td>TMA-delamineringstest er p\u00e5kr\u00e6vet<\/td><\/tr><tr><td>6-12 m\u00e5neder<\/td><td>120\u00b0C\/4h + kv\u00e6lstofbeskyttelse<\/td><td>Obligatorisk test af loddeevne<\/td><\/tr><tr><td>&gt;12 m\u00e5neder<\/td><td>Anbefalet bortskaffelse<\/td><td>Test af termisk chok p\u00e5 pr\u00f8ver<\/td><\/tr><\/tbody><\/table><\/figure><p><strong>S\u00e6rlige behandlingsteknikker<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Nitrogen reflow-lodning (O\u2082-indhold &lt;100 ppm)<\/li>\n\n<li>Brug af h\u00f8jaktiv no-clean loddepasta (f.eks. ROL0-kvalitet)<\/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-shelf-life-2.jpg\" alt=\"PCB&#039;s holdbarhed\" class=\"wp-image-3642\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/PCB-shelf-life-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Engineering_Practices_to_Extend_PCB_Shelf_Life\"><\/span>Tekniske metoder til at forl\u00e6nge PCB's holdbarhed<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advanced_Packaging_Technology\"><\/span>Avanceret emballageteknologi<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Beskyttende emballage i flere lag<\/strong>:<\/li><\/ul><ol class=\"wp-block-list\"><li>Indre lag: Antistatisk pose af aluminiumsfolie<\/li>\n\n<li>Mellemste lag: Iltabsorberende + fugtighedsindikatorkort<\/li>\n\n<li>Yderste lag: St\u00f8dsikker EPE-polstring<\/li><\/ol><ul class=\"wp-block-list\"><li><strong>L\u00f8sninger til langtidsopbevaring<\/strong>:<\/li>\n\n<li>Opbevaring af kv\u00e6lstof (O\u2082-indhold &lt;0,5%)<\/li>\n\n<li>Opbevaring ved lav temperatur ved -10 \u00b0C (forebyggelse af kondensering p\u00e5kr\u00e6vet)<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Optimized_Surface_Finish_Selection\"><\/span>Optimeret valg af overfladefinish<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Applikationer med h\u00f8j p\u00e5lidelighed<\/strong>: ENEPIG (18 m\u00e5neders holdbarhed)<\/li>\n\n<li><strong>Omkostningsf\u00f8lsomme projekter<\/strong>: ImAg+OSP hybridproces<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Smart_Monitoring_Systems\"><\/span>Smarte overv\u00e5gningssystemer<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Implementer IoT-sensorer til sporing i realtid af:<\/p><ul class=\"wp-block-list\"><li>Udsving i temperatur og luftfugtighed p\u00e5 lageret<\/li>\n\n<li>\u00c6ndringer i det interne posetryk<\/li>\n\n<li>Misfarvning af materiale (via maskinsyn)<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Risk_Assessment_for_Using_Expired_PCBs\"><\/span>Risikovurdering for brug af udg\u00e5et PCB<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mandatory_Inspection_Items\"><\/span>Obligatoriske inspektionspunkter<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Test af loddeevne<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>I henhold til IPC-J-STD-003B-standarderne<\/li>\n\n<li>Loddets spredningsareal skal overstige 95%<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Verifikation af p\u00e5lidelighed<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Test af termisk cykling (-55\u00b0C~125\u00b0C, 100 cyklusser)<\/li>\n\n<li>Trykkogertest (121\u00b0C\/100%RH, 96 timer)<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Risk_Mitigation_Measures\"><\/span>Risikobegr\u00e6nsende foranstaltninger<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li>100% inspektion af f\u00f8rste artikler + forst\u00f8rret loddefugeunders\u00f8gelse<\/li>\n\n<li>Yderligere \u00e6ldningsscreening (48 timer\/85 \u00b0C)<\/li>\n\n<li>Reserverede testpads langs kortets kanter<\/li><\/ul><p><\/p>","protected":false},"excerpt":{"rendered":"<p>Tre vigtige ting p\u00e5virker, hvor l\u00e6nge PCB'er holder: hvordan de behandles under produktionen, hvordan de opbevares, og hvad selve printpladen har brug for. Der findes en behandlingsplan for udl\u00f8bne printkort, som er blevet klassificeret, og en teknisk praksisplan for at forl\u00e6nge printkortenes holdbarhed. Planen omfatter avanceret emballageteknologi, forbedrede muligheder for overfladebehandling og intelligente overv\u00e5gningssystemer. Alt dette giver elektroniske produktionsvirksomheder en komplet l\u00f8sning til h\u00e5ndtering af printkortets levetid.<\/p>","protected":false},"author":1,"featured_media":3638,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[323],"class_list":["post-3636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq","tag-pcb-shelf-life"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the shelf life of PCB? - Topfastpcb<\/title>\n<meta name=\"description\" content=\"The lifespan of PCBs can be anywhere from six months to 10 years. 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