{"id":7414,"date":"2012-04-15T15:10:04","date_gmt":"2012-04-15T13:10:04","guid":{"rendered":"https:\/\/www.primelettronica.com\/pcb-delamination\/"},"modified":"2012-04-15T15:10:04","modified_gmt":"2012-04-15T13:10:04","slug":"pcb-delamination","status":"publish","type":"post","link":"https:\/\/www.primelettronica.com\/en\/pcb-delamination\/","title":{"rendered":"PCB Delamination"},"content":{"rendered":"

This article is part of a series of documents aimed at providing education and information to all Prime customers and anyone who uses printed circuit boards.
\nWe want to provide some guidance on how to reduce the phenomenon of \u201c\u201dDelamination in printed circuit boards \u201c\u201d.<\/em><\/p>\n

First of all, it \u201cis important to know that Printed Circuit Boards are manufactured using composite material (FR4 and its variants). This is a highly HYGROSCOPIC material<\/em>, which means\u201d it is \u201cparticularly sensitive to\u201d environmental humidity \u201c, regardless of the packaging\u201d method.
\nAny \u201cmoisture\u201d that is not eliminated will \u201ctransform into vapor during the soldering phases, causing cracks, blistering, delamination, blowholes, and microcavities\u201d in the most \u201csensitive areas of the\u201d assembly.
\nTo prevent this phenomenon, it \u201cis helpful to have appropriate methods for\u201d packaging, storage, and potential drying of the printed circuit board before entering production.<\/p>\n

It \u201cis good practice to consider the printed circuit board as a\u201d\u201cperishable\u201d\u201cmaterial; Prime suggests not to exceed storage beyond eight months (unless there are different indications on the\u201d packaging provided by the PCB manufacturer), even if the circuits are vacuum-packed. (Usually, suppliers pack the circuits in airtight packages with Nitrogen).
\nThe various PCB manufacturers we work with suggest that storage should take place in suitable enclosed environments appropriate for the intended use, maintained at an ambient temperature of 20 degrees C +\/- 5 degrees C with \u201cmaximum relative humidity\u201d (RH) of 70%.<\/p>\n

It is important that after 8-10 weeks from the production date (shown on the package and\/or on the circuit itself), the boards should always undergo conditioning treatment (Baking).
\nThis treatment allows for the complete elimination of \u201cmoisture\u201d\u201c\u201d absorbed \u201c\u201d by the printed circuit board.<\/em><\/p>\n

Depending on the circuit finish (HAL, Chemical Gold etc.), Prime has established different reconditioning methods. If interested, don’t hesitate to contact our technical office tecnico@primelettronica.com<\/a><\/em><\/strong>.<\/p>\n

Reconditioning is performed using a static oven, preferably with air circulation, stacking the circuits in piles of no more than \u201c10 boards on top of each other\u201d. (MIL-55110)<\/em>
\nBe aware that prolonged and uncontrolled oven exposure can \u201cseriously compromise the solderability\u201d of the board and trigger a process of \u201c\u201d premature aging \u201c\u201d.<\/p>\n

We hope this information has been useful. Any feedback from you is valuable and appreciated – we would be pleased to receive it at qualita@primelettronica.com<\/a>.<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

This article is part of a series of documents aimed at providing education and information to all Prime customers and anyone who uses printed circuit boards. We want to provide some guidance on how to reduce the phenomenon of \u201c\u201dDelamination in printed circuit boards \u201c\u201d. First of all, it \u201cis important to know that Printed […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[58],"tags":[],"class_list":["post-7414","post","type-post","status-publish","format-standard","hentry","category-technical-documentation"],"acf":[],"yoast_head":"\nPCB Delamination<\/title>\n<meta name=\"description\" content=\"A critical issue concerning printed circuit boards: PCB delamination.\" \/>\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.primelettronica.com\/en\/pcb-delamination\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PCB Delamination\" \/>\n<meta property=\"og:description\" content=\"A critical issue concerning printed circuit boards: PCB delamination.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.primelettronica.com\/en\/pcb-delamination\/\" \/>\n<meta property=\"og:site_name\" content=\"Prime Elettronica\" \/>\n<meta property=\"article:published_time\" content=\"2012-04-15T13:10:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.primelettronica.com\/wp-content\/uploads\/2023\/10\/PRIME-60-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Webelett\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Webelett\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/\"},\"author\":{\"name\":\"Webelett\",\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/#\\\/schema\\\/person\\\/edcd36ef07307660dabd671600fe0662\"},\"headline\":\"PCB Delamination\",\"datePublished\":\"2012-04-15T13:10:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/\"},\"wordCount\":381,\"publisher\":{\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/#organization\"},\"articleSection\":[\"Technical documentation\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/\",\"url\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/\",\"name\":\"PCB Delamination\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/#website\"},\"datePublished\":\"2012-04-15T13:10:04+00:00\",\"description\":\"A critical issue concerning printed circuit boards: PCB delamination.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/pcb-delamination\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/home\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"PCB Delamination\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/\",\"name\":\"Prime Elettronica\",\"description\":\"Assemblaggio schede elettroniche\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.primelettronica.com\\\/en\\\/#organization\",\"name\":\"Prime Elettronica - 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