{"id":4974,"date":"2026-01-09T08:58:00","date_gmt":"2026-01-09T00:58:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=4974"},"modified":"2026-01-07T16:23:32","modified_gmt":"2026-01-07T08:23:32","slug":"pcb-quality-determining-factors","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/","title":{"rendered":"Vad avg\u00f6r kretskortets kvalitet? F\u00f6rklaring av tillverknings- och designfaktorer"},"content":{"rendered":"<p>Kretskortskvalitet definieras inte av ett enda inspektionssteg eller testresultat.<br>Det \u00e4r den <strong>kumulativt resultat av designbeslut, materialval, kontroll av tillverkningsprocessen och kvalitetsstyrning<\/strong>.<\/p><p>Ett m\u00f6nsterkort som klarar elektriska tester kan \u00e4nd\u00e5 g\u00e5 s\u00f6nder i f\u00f6rtid om kvalitetsrisker introduceras tidigare i tillverkningsprocessen.<\/p><p>Denna artikel f\u00f6rklarar <strong>vad som verkligen avg\u00f6r PCB-kvalitet<\/strong>, ur ett ingenj\u00f6rs- och tillverkningsperspektiv.<\/p><p>F\u00f6r tillverkningssammanhang, se:<br><strong><a href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-manufacturing-process-explained-step-by-step\/\">F\u00f6rklaring av tillverkningsprocessen f\u00f6r m\u00f6nsterkort<\/a><\/strong><\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"455\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-1.jpg\" alt=\"PCB-kvalitet\" class=\"wp-image-4975\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-1-300x228.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-1-16x12.jpg 16w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><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\">Inneh\u00e5llsf\u00f6rteckning<\/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\/sv\/blog\/pcb-quality-determining-factors\/#What_Does_%E2%80%9CPCB_Quality%E2%80%9D_Really_Mean\" >Vad betyder egentligen \"PCB-kvalitet\"?<\/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\/sv\/blog\/pcb-quality-determining-factors\/#Design_Factors_That_Affect_PCB_Quality\" >Designfaktorer som p\u00e5verkar m\u00f6nsterkortets kvalitet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/#Material_Selection_and_Quality_Impact\" >Materialval och kvalitetsp\u00e5verkan<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/#Manufacturing_Process_Control\" >Styrning av tillverkningsprocesser<\/a><\/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\/sv\/blog\/pcb-quality-determining-factors\/#Yield_and_Quality_Are_Closely_Linked\" >Avkastning och kvalitet \u00e4r n\u00e4ra kopplade till varandra<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/#Inspection_and_Testing_as_Quality_Gates\" >Inspektion och testning som kvalitetsgarantier<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/#PCB_Quality_vs_PCB_Manufacturing_Cost\" >PCB-kvalitet kontra tillverkningskostnad f\u00f6r PCB<\/a><\/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\/sv\/blog\/pcb-quality-determining-factors\/#Manufacturers_Role_in_Quality_Assurance\" >Tillverkarens roll i kvalitetss\u00e4kringen<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/#Conclusion\" >Slutsats<\/a><\/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\/sv\/blog\/pcb-quality-determining-factors\/#FAQ_PCB_Quality_Determinants\" >FR\u00c5GOR OCH SVAR: Best\u00e4mningsfaktorer f\u00f6r PCB-kvalitet<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Does_%E2%80%9CPCB_Quality%E2%80%9D_Really_Mean\"><\/span>Vad betyder egentligen \"PCB-kvalitet\"?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Kretskortskvalitet avser vanligtvis kortets f\u00f6rm\u00e5ga att:<\/p><ul class=\"wp-block-list\"><li>Uppfyller elektriska specifikationer<\/li>\n\n<li>Beh\u00e5lla mekanisk integritet<\/li>\n\n<li>T\u00e5l termisk och milj\u00f6m\u00e4ssig p\u00e5frestning<\/li>\n\n<li>Fungera p\u00e5 ett tillf\u00f6rlitligt s\u00e4tt under sin f\u00f6rv\u00e4ntade livsl\u00e4ngd<\/li><\/ul><p>Kvalitet \u00e4r n\u00e4ra kopplat till <strong>tillf\u00f6rlitlighet<\/strong>och inte bara den initiala funktionaliteten.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Design_Factors_That_Affect_PCB_Quality\"><\/span>Designfaktorer som p\u00e5verkar m\u00f6nsterkortets kvalitet<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Konstruktionen definierar tillverkningsmarginalen.<\/p><p>Viktiga designrelaterade kvalitetsfaktorer inkluderar:<\/p><ul class=\"wp-block-list\"><li>Sp\u00e5rets bredd och avst\u00e5nd<\/li>\n\n<li>Via struktur och aspektf\u00f6rh\u00e5llande<\/li>\n\n<li>Balans och symmetri i lagren<\/li>\n\n<li>Kontrollerad impedansnoggrannhet<\/li>\n\n<li>Distribution av koppar<\/li><\/ul><p>Konstruktioner som t\u00e4njer p\u00e5 processgr\u00e4nserna minskar tillverkningsutbytet och den l\u00e5ngsiktiga tillf\u00f6rlitligheten.<\/p><p>F\u00f6rh\u00e5llandet mellan design, kostnad och kvalitet:<br><strong><a href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/how-pcb-design-decisions-affect-manufacturing-cost\/\">Kostnadsfaktorer f\u00f6r PCB-design<\/a><\/strong><\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Material_Selection_and_Quality_Impact\"><\/span>Materialval och kvalitetsp\u00e5verkan<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Materialval p\u00e5verkar direkt:<\/p><ul class=\"wp-block-list\"><li>Termisk stabilitet<\/li>\n\n<li>Fuktbest\u00e4ndighet<\/li>\n\n<li>Dielektrisk konsistens<\/li>\n\n<li>Mekanisk styrka<\/li><\/ul><p>L\u00e5gkvalitativa eller felmatchade material \u00f6kar risken f\u00f6r:<\/p><ul class=\"wp-block-list\"><li>Delaminering<\/li>\n\n<li>CAF (ledande anodisk gl\u00f6dtr\u00e5d)<\/li>\n\n<li>Dielektrisk nedbrytning<\/li><\/ul><p><em>Sambandet material-kostnad-tillf\u00f6rlitlighet:<\/em><br><strong><a href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/how-pcb-material-and-layer-choices-impact-manufacturing-cost\/\">Kostnad f\u00f6r PCB-material och lager<\/a><\/strong><\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Manufacturing_Process_Control\"><\/span>Styrning av tillverkningsprocesser<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Kretskortets kvalitet beror p\u00e5 hur konsekvent tillverkningsprocesserna styrs.<\/p><p>Kritiska processteg inkluderar:<\/p><ul class=\"wp-block-list\"><li>Noggrannhet vid avbildning av inre skikt<\/li>\n\n<li>Precision vid borrning<\/li>\n\n<li>Kopparpl\u00e4teringens enhetlighet<\/li>\n\n<li>Etsningskonsistens<\/li>\n\n<li>Lamineringstryck och temperatur<\/li><\/ul><p>Processvariationer \u00e4r en av de fr\u00e4msta orsakerna till dolda tillf\u00f6rlitlighetsbrister.<\/p><p><em>Processdetaljer:<\/em><br><strong><a href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/how-pcb-manufacturing-processes-affect-overall-cost\/\">Kostnadsf\u00f6rdelning f\u00f6r tillverkning av kretskort<\/a><\/strong><\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"513\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-3.jpg\" alt=\"PCB-kvalitet\" class=\"wp-image-4976\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-3.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-3-300x257.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-3-14x12.jpg 14w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Yield_and_Quality_Are_Closely_Linked\"><\/span>Avkastning och kvalitet \u00e4r n\u00e4ra kopplade till varandra<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Avkastningen \u00e4r en m\u00e4tbar indikator p\u00e5 stabiliteten i kvaliteten.<\/p><p>L\u00e5g avkastning signalerar ofta:<\/p><ul class=\"wp-block-list\"><li>Instabila processer<\/li>\n\n<li>Missmatch mellan konstruktion och tillverkning<\/li>\n\n<li>Otillr\u00e4ckliga kontrollgr\u00e4nser<\/li><\/ul><p>Processer med h\u00f6g avkastning tenderar att producera mer tillf\u00f6rlitliga m\u00f6nsterkort \u00f6ver tiden.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Inspection_and_Testing_as_Quality_Gates\"><\/span>Inspektion och testning som kvalitetsgarantier<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Inspektion och testning hj\u00e4lper till att uppt\u00e4cka defekter, men <strong>de skapar inte kvalitet<\/strong>.<\/p><p>Vanliga kvalitetskontroller inkluderar:<\/p><ul class=\"wp-block-list\"><li>Automatiserad optisk inspektion (AOI)<\/li>\n\n<li>Elektrisk provning<\/li>\n\n<li>R\u00f6ntgeninspektion (f\u00f6r HDI)<\/li>\n\n<li>Tv\u00e4rsnittsanalys<\/li><\/ul><p>Inspektion \u00e4r mest effektiv n\u00e4r den kombineras med stabila processer uppstr\u00f6ms.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Quality_vs_PCB_Manufacturing_Cost\"><\/span>PCB-kvalitet kontra tillverkningskostnad f\u00f6r PCB<span class=\"ez-toc-section-end\"><\/span><\/h2><p>H\u00f6gre kvalitet inneb\u00e4r inte alltid h\u00f6gre kostnad.<\/p><p>Faktum \u00e4r..:<\/p><ul class=\"wp-block-list\"><li>Stabila processer minskar antalet omarbetningar<\/li>\n\n<li>H\u00f6gre avkastning s\u00e4nker den effektiva kostnaden<\/li>\n\n<li>F\u00e4rre fel p\u00e5 f\u00e4ltet minskar den totala \u00e4gandekostnaden<\/li><\/ul><p><em>Balans mellan kostnad och kvalitet:<\/em><br><strong><a href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/how-pcb-manufacturing-processes-affect-overall-cost\/\">PCB:s tillverkningskostnad f\u00f6rklarad<\/a><\/strong><\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"442\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-2.jpg\" alt=\"PCB-kvalitet\" class=\"wp-image-4977\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-2-300x221.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality-2-16x12.jpg 16w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Manufacturers_Role_in_Quality_Assurance\"><\/span>Tillverkarens roll i kvalitetss\u00e4kringen<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Kretskortstillverkare spelar en avg\u00f6rande roll f\u00f6r kvalitetsresultaten genom att:<\/p><ul class=\"wp-block-list\"><li>Till\u00e4mpning av DFM-regler<\/li>\n\n<li>\u00d6vervakning av processens kapacitet<\/li>\n\n<li>Kontroll av materialink\u00f6p<\/li>\n\n<li>Analys av data om avkastning och fel<\/li><\/ul><p>P\u00e5 TOPFAST fokuserar kvalitetshanteringen p\u00e5 <strong>f\u00f6rebygga defekter p\u00e5 processniv\u00e5<\/strong>i st\u00e4llet f\u00f6r att enbart f\u00f6rlita sig p\u00e5 inspektion i slutet av linjen.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Slutsats<span class=\"ez-toc-section-end\"><\/span><\/h2><p>PCB-kvalitet \u00e4r resultatet av <strong>designdisciplin, materialintegritet, tillverkningskontroll och systematisk kvalitetsstyrning<\/strong>.<\/p><p>Genom att f\u00f6rst\u00e5 vad som avg\u00f6r m\u00f6nsterkortskvaliteten kan ingenj\u00f6rer och ink\u00f6pare fatta v\u00e4lgrundade beslut som f\u00f6rb\u00e4ttrar tillf\u00f6rlitligheten utan on\u00f6diga kostnads\u00f6kningar.<\/p><p>Denna artikel utg\u00f6r grunden f\u00f6r <strong>Kvalitet och tillf\u00f6rlitlighet f\u00f6r kretskort<\/strong> inneh\u00e5llskluster.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ_PCB_Quality_Determinants\"><\/span>FR\u00c5GOR OCH SVAR: Best\u00e4mningsfaktorer f\u00f6r PCB-kvalitet<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1767773306641\"><strong class=\"schema-faq-question\">Q: Vilken \u00e4r den viktigaste faktorn som p\u00e5verkar m\u00f6nsterkortets kvalitet?<\/strong> <p class=\"schema-faq-answer\">A: Kontroll av tillverkningsprocessen och materialkvalitet \u00e4r de mest kritiska faktorerna.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1767773329402\"><strong class=\"schema-faq-question\">F: Kan ett m\u00f6nsterkort klara tester men \u00e4nd\u00e5 vara av l\u00e5g kvalitet?<\/strong> <p class=\"schema-faq-answer\">Svar: Ja, det st\u00e4mmer. Dolda defekter kanske inte syns under den f\u00f6rsta testningen men kan orsaka l\u00e5ngvariga fel.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1767773388858\"><strong class=\"schema-faq-question\">Q: <strong>Inneb\u00e4r h\u00f6gre kostnad alltid h\u00f6gre kvalitet p\u00e5 m\u00f6nsterkortet?<\/strong><\/strong> <p class=\"schema-faq-answer\">Processstabilitet och avkastningskontroll \u00e4r viktigare \u00e4n enbart priset.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1767773435542\"><strong class=\"schema-faq-question\">Q: <strong>Hur kan m\u00f6nsterkortskvaliteten f\u00f6rb\u00e4ttras i ett tidigt skede?<\/strong><\/strong> <p class=\"schema-faq-answer\">S: Genom god designpraxis och tidigt DFM-samarbete med tillverkarna.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1767773474371\"><strong class=\"schema-faq-question\">Q: <strong>Vem \u00e4r ansvarig f\u00f6r kretskortets kvalitet: konstrukt\u00f6ren eller tillverkaren?<\/strong><\/strong> <p class=\"schema-faq-answer\">S: B\u00e5de och. Kvalitet \u00e4r ett delat ansvar mellan konstruktion och tillverkning.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>Kretskortets kvalitet beror p\u00e5 materialval, designval, tillverkningsprecision och rigor\u00f6s kvalitetskontroll. Den h\u00e4r guiden beskriver dessa nyckelfaktorer f\u00f6r att s\u00e4kerst\u00e4lla tillf\u00f6rlitlig och h\u00f6gpresterande kretskortsproduktion.<\/p>","protected":false},"author":1,"featured_media":4978,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[430],"class_list":["post-4974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-pcb-quality"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Determines PCB Quality? Manufacturing and Design Factors Explained<\/title>\n<meta name=\"description\" content=\"PCB quality hinges on material selection, design choices, manufacturing precision, and rigorous quality control. This guide details these key factors to ensure reliable and high-performance circuit board production.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Determines PCB Quality? Manufacturing and Design Factors Explained\" \/>\n<meta property=\"og:description\" content=\"PCB quality hinges on material selection, design choices, manufacturing precision, and rigorous quality control. This guide details these key factors to ensure reliable and high-performance circuit board production.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.topfastpcb.com\/sv\/blog\/pcb-quality-determining-factors\/\" \/>\n<meta property=\"og:site_name\" content=\"Topfastpcb\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-09T00:58:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/01\/PCB-Quality.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"499\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u6258\u666e\u6cd5\u65af\u7279\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Skriven av\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6258\u666e\u6cd5\u65af\u7279\" \/>\n\t<meta name=\"twitter:label2\" content=\"Ber\u00e4knad l\u00e4stid\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minuter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/pcb-quality-determining-factors\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/pcb-quality-determining-factors\/\"},\"author\":{\"name\":\"\u6258\u666e\u6cd5\u65af\u7279\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a\"},\"headline\":\"What Determines PCB Quality? 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