{"id":445,"date":"2018-01-22T09:09:19","date_gmt":"2018-01-22T09:09:19","guid":{"rendered":"http:\/\/www.rigiflex.com\/blog\/?p=445"},"modified":"2025-06-05T11:55:13","modified_gmt":"2025-06-05T11:55:13","slug":"why-use-fr-4-for-fabricating-high-tg-pcbs","status":"publish","type":"post","link":"https:\/\/www.rigiflex.com\/blog\/why-use-fr-4-for-fabricating-high-tg-pcbs\/","title":{"rendered":"Why Use FR-4 for Fabricating High-Tg PCBs?"},"content":{"rendered":"<p align=\"justify\">Several applications require PCBs that withstand relatively high temperatures ranging from 200 \u00b0C, or more. To perform reliably in high-temperature applications, we need specialized PCBs that are fabricated using performance-driven materials. This blog aims to familiarize you with one such specialized PCBs namely, High-Tg. These PCBs can handle extreme PCB glass transition-temperature, whilst offering the following;<\/p>\n<div align=\"justify\">\n<ul>\n<li>Improved impedance control<\/li>\n<li>Better thermal management<\/li>\n<li>Low moisture absorption<\/li>\n<li>Consistent performance<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1266 size-full\" src=\"https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86.png\" alt=\"FR4 Fabricating high TG PCBs\" width=\"1200\" height=\"400\" srcset=\"https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86.png 1200w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86-300x100.png 300w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86-768x256.png 768w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86-1024x341.png 1024w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2018\/01\/86-1140x380.png 1140w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<\/div>\n<p align=\"justify\"><strong>FR-4 \u2013 The Material of Choice for High-Tg PCBs<\/strong><\/p>\n<p align=\"justify\">For applications in extreme temperature range, high-Tg PCBs are manufactured using FR-4 substrate. FR-4 is a flame-retardant fiberglass reinforced epoxy material that resists multiple lamination cycles, complicated PCB processing, and allows lead-free soldering. The commonly used FR-4 substrates include pure PTFE, ceramic filled PTFE and thermoset hydrocarbon substrates.<\/p>\n<p align=\"justify\">Following are the peculiar properties of FR-4 substrate, which make them an ideal choice for PCBs intended for demanding applications.<\/p>\n<div align=\"justify\">\n<ul>\n<li>Outstanding electrical performance.<\/li>\n<li>Ability to withstand special drilling and plated through hole (pth) preparations.<\/li>\n<li>Good plated through hole reliability.<\/li>\n<li>Relatively low cost.<\/li>\n<li>Stable dissipation factor (Df) compared to other standard PCB materials.<\/li>\n<li>Exceptional chemical resistance<\/li>\n<li>Suitable for PCB designs requiring much tighter impedance control.<\/li>\n<li>Vibration, shock and flame resistant.<\/li>\n<\/ul>\n<\/div>\n<p align=\"justify\">Considering its peculiar properties in terms of thermal management, FR-4 High-Tg PCBs are largely chosen for applications in Computing, Storage &amp; Peripherals, Consumer Electronics, Networking &amp; Communication Systems, Aerospace &amp; Defense, Medical, Industrial &amp; Instrumentation, and Automotive &amp; Transportation industries.<\/p>\n<p align=\"justify\"><strong>Choose the Right Material to Achieve the Desired Results<\/strong><\/p>\n<p align=\"justify\">Amongst the types of FR-4 materials available, it is important to choose the right one as per the application requirements as it determines the stability, and optimum performance of the final assembly. Factors such a dielectric constant, loss factor, thermal conductivity, transition temperature, coefficient of thermal expansion (CTE), electrical performance should be considered before choosing <a href=\"https:\/\/rigiflex.com\/blog\/fr-4-pcbs-the-rising-trend-in-the-electronics-industry\/\">FR-4 substrate for your applications<\/a>. If you are confused making a decision about the type of FR-4 material to choose, consider partnering with a PCB fabricator who is experienced in supplying High-Tg PCBs to various industries. RigiFlex technologies is one of the prominent PCB manufacturers in the market who possesses hands-on experience in delivering High-Tg PCBs of various configurations. Due their years&#8217; of business experience and innovative technologies, RigiFlex is capable of handling different laminate materials and substrate materials that best suit the customers\u2019 application requirements.<\/p>\n<p align=\"justify\"><a href=\" https:\/\/www.rigiflex.com\/pcb-quote\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-781 size-full\" src=\" https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2023\/04\/PCB-Online-Quote.png\" alt=\"PCB Online Quote\" width=\"247\" height=\"50\" \/> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Several applications require PCBs that withstand relatively high temperatures ranging from 200 \u00b0C, or more. To perform reliably in high-temperature applications, we need specialized PCBs that are fabricated using performance-driven materials. This blog aims to familiarize you with one such specialized PCBs namely, High-Tg. These PCBs can handle extreme PCB glass transition-temperature, whilst offering the<\/p>\n<p class=\"more-link\"><a href=\"https:\/\/www.rigiflex.com\/blog\/why-use-fr-4-for-fabricating-high-tg-pcbs\/\" class=\"themebutton\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[92,96],"class_list":["post-445","post","type-post","status-publish","format-standard","hentry","category-manufacturing","tag-fr-4-pcbs","tag-high-tg-pcbs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why Use FR-4 for Fabricating High-Tg PCBs? - Rigiflex Technology Inc. Blog<\/title>\n<meta name=\"description\" content=\"Why choose FR-4 for High-Tg PCBs? 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