{"id":437,"date":"2017-10-23T06:49:55","date_gmt":"2017-10-23T06:49:55","guid":{"rendered":"http:\/\/www.rigiflex.com\/blog\/?p=437"},"modified":"2025-06-16T13:50:50","modified_gmt":"2025-06-16T13:50:50","slug":"fr-4-pcbs-the-rising-trend-in-the-electronics-industry","status":"publish","type":"post","link":"https:\/\/www.rigiflex.com\/blog\/fr-4-pcbs-the-rising-trend-in-the-electronics-industry\/","title":{"rendered":"FR-4 PCBs \u2013 The Rising Trend in the Electronics Industry"},"content":{"rendered":"<p align=\"justify\">There are a number of steps involved in the manufacturing of a printed circuit board (PCB). Out these several steps, selection of material for the PCB goes a long way in deciding its performance, as well as its scope application. The base material of a PCB, is therefore very important. Different types of base materials are used based on the application requirements of the PCBs. Based on the flammability characteristics of a circuit board material, they can be of different types, which include CEM 1 (single-sided fiberglass board), CEM 3 (double-sided half-glass board), 94V0 (flame retardant cardboard), 94HB (non- fireproof cardboard), 22F (single-sided fiberglass board), and FR4 (double-sided fiberglass board). In this post, we will discuss in detail about the FR-4 material used in the printed circuit board. Why is this material used? What are its properties? Please read the following post to know.<\/p>\n<p align=\"justify\"><a href=\"https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1269 size-full\" src=\"https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88.png\" alt=\"FR-4 PCBS\" width=\"1200\" height=\"400\" srcset=\"https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88.png 1200w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88-300x100.png 300w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88-768x256.png 768w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88-1024x341.png 1024w, https:\/\/www.rigiflex.com\/blog\/wp-content\/uploads\/2017\/10\/88-1140x380.png 1140w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<p align=\"justify\"><strong>What is an FR-4 Material?<\/strong><\/p>\n<p align=\"justify\">FR for in FR-4 material stands for fire retardant, which means that the material is self-extinguishing. It is basically a glass fiber epoxy laminate, which is most widely used in manufacturing printed circuit boards. This material conforms to the UL94V-0 standards, and is an international grade material, which has been accepted widely for fiberglass reinforced epoxy laminates. The material consists of bromine, which is the main factor that makes it a fire retardant. The FR-4 material is most commonly used in prototypes. In the prototyping stage, the circuit boards are pushed to their extremes for testing purpose. Thus, the FR-4 material is highly suited for prototype circuit boards.<\/p>\n<p align=\"justify\">When each side of this material is added with a copper layer, it is referred to as a Copper Clad Laminate (CCL). Now, this is a non-conductive core material, and can be used for normal printed circuit boards. However, those PCBs, which use FR-4 material are referred to as FR-4 printed circuit boards.<\/p>\n<p align=\"justify\"><strong>What Properties of FR-4 Material Make it so Special?<\/strong><\/p>\n<p align=\"justify\">Here are some properties of the FR-4 material, which make it one of the most preferred materials for manufacturing printed circuit boards:<\/p>\n<div align=\"justify\">\n<ul>\n<li>Flexural Strength \u2013 100,000 lbf\/in2 (lengthwise); 75,000 lbf\/in2 (crosswise)<\/li>\n<li>Glass Transition Temperature \u2013 135 \u00b0C<\/li>\n<li>Dissipation Factor @1MHz \u2013 0.014<\/li>\n<li>Glass Transition Temperature (Tg) \u2013 150Tg or 170Tg<\/li>\n<li>Dielectric Constant @1 GHz &#8211; 4.25-4.55<\/li>\n<li>Compatibility \u2013 Standard and Lead-free Assembly<\/li>\n<\/ul>\n<\/div>\n<p align=\"justify\"><strong>What are the Various Types of PCBs Designed Using FR-4?<\/strong><\/p>\n<p align=\"justify\">When you select FR-4 as a material for your printed circuit board, you can design various types of PCBs, such as:<\/p>\n<div align=\"justify\">\n<ul>\n<li>Single Sided (S\/S), or Single layer<\/li>\n<li>Double Sided (D\/S), or double layer, 2Layers, 2L<\/li>\n<li>Four Layers (4L), Six Layers (6L), Eight Layers (8L), Ten Layers (10L)<\/li>\n<li>Board with more than 10 layers (10L)<\/li>\n<\/ul>\n<\/div>\n<p align=\"justify\">These all were the features that explain the reasons behind the increasing popularity of this material for manufacturing printed circuit boards. The <a href=\"http:\/\/www.rigiflex.com\/blog\/fr-4-optimal-material-for-fabrication-of-printed-circuit-boards\/\">FR-4 PCBs<\/a> are among the widely used printed circuit boards in a wide range of applications. There are a lot of manufacturers who provide these PCBs. There are very few manufacturers of FR-4 PCBs, such as Rigiflex, who have the required skill set and experienced staff, who can take care of your requirements efficiently.<\/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>There are a number of steps involved in the manufacturing of a printed circuit board (PCB). Out these several steps, selection of material for the PCB goes a long way in deciding its performance, as well as its scope application. The base material of a PCB, is therefore very important. Different types of base materials<\/p>\n<p class=\"more-link\"><a href=\"https:\/\/www.rigiflex.com\/blog\/fr-4-pcbs-the-rising-trend-in-the-electronics-industry\/\" 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":[4],"tags":[93,92],"class_list":["post-437","post","type-post","status-publish","format-standard","hentry","category-industrial","tag-fr-4","tag-fr-4-pcbs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FR-4 PCBs \u2013 The Rising Trend in the Electronics Industry - Rigiflex Technology Inc. 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