{"id":5893,"date":"2026-07-05T08:36:00","date_gmt":"2026-07-05T00:36:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=5893"},"modified":"2026-06-24T16:50:40","modified_gmt":"2026-06-24T08:50:40","slug":"high-tg-fr4-pcb","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/","title":{"rendered":"Vejledning til FR4-printplademateriale med h\u00f8jt TG-indhold"},"content":{"rendered":"<p>FR4 med h\u00f8j TG henviser til en klasse af epoxyglasfiberlaminater med en forh\u00f8jet glasovergangstemperatur. I praksis <a href=\"https:\/\/www.topfastpcb.com\/da\/pcb-manufacturing\/\">PCB-fremstilling<\/a>, TG er en af de vigtigste parametre, der bestemmer, hvordan et printkort opf\u00f8rer sig under varmebelastning, is\u00e6r ved blyfri lodning og langvarig drift ved h\u00f8je temperaturer.<\/p><p>Sammenlignet med standard FR4 tilbyder materialer med h\u00f8j TG bedre strukturel stabilitet og anvendes i vid udstr\u00e6kning i applikationer, hvor termisk p\u00e5lidelighed er af afg\u00f8rende betydning.<\/p><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\/2026\/06\/High-TG-FR4-PCB-Material.jpg\" alt=\"FR4-printplademateriale med h\u00f8j TG-v\u00e6rdi\" class=\"wp-image-5894\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-18x12.jpg 18w\" 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\">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\/high-tg-fr4-pcb\/#What_TG_Means_in_PCB_Materials\" >Hvad TG betyder i forbindelse med printpladematerialer<\/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\/da\/blog\/high-tg-fr4-pcb\/#Standard_TG_vs_High_TG_FR4\" >FR4 med standard TG kontra FR4 med h\u00f8j TG<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Standard_TG_FR4\" >Standard TG FR4<\/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\/high-tg-fr4-pcb\/#Mid_TG_FR4\" >Mid TG FR4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#High_TG_FR4\" >FR4 med h\u00f8jt TG<\/a><\/li><\/ul><\/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\/da\/blog\/high-tg-fr4-pcb\/#Why_High_TG_FR4_Matters_in_PCB_Manufacturing\" >Hvorfor FR4 med h\u00f8jt TG-indhold er vigtigt i fremstillingen af printkort<\/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\/da\/blog\/high-tg-fr4-pcb\/#Electrical_and_Mechanical_Properties\" >Elektriske og mekaniske egenskaber<\/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\/da\/blog\/high-tg-fr4-pcb\/#Where_High_TG_FR4_Is_Used\" >Hvor FR4 med h\u00f8jt TG anvendes<\/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\/high-tg-fr4-pcb\/#Automotive_Electronics\" >Elektronik til biler<\/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\/high-tg-fr4-pcb\/#Power_Electronics\" >Effektelektronik<\/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\/high-tg-fr4-pcb\/#Communication_Systems\" >Kommunikationssystemer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Server_and_Data_Systems\" >Server- og datasystemer<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Manufacturing_Considerations\" >Overvejelser vedr\u00f8rende fremstilling<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Drilling_and_Via_Reliability\" >Boring og via-p\u00e5lidelighed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Lamination_Process\" >Lamineringsproces<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Reflow_Resistance\" >Reflow-modstand<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#High_TG_FR4_vs_Standard_FR4\" >FR4 med h\u00f8jt TG-indhold sammenlignet med standard FR4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Limitations_of_High_TG_FR4\" >Begr\u00e6nsninger ved FR4 med h\u00f8jt TG-indhold<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Material_Selection_Strategy\" >Strategi for materialevalg<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#Common_High_TG_FR4_Suppliers\" >G\u00e6ngse leverand\u00f8rer af FR4 med h\u00f8jt TG-indhold<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.topfastpcb.com\/da\/blog\/high-tg-fr4-pcb\/#FAQ\" >OFTE STILLEDE SP\u00d8RGSM\u00c5L<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_TG_Means_in_PCB_Materials\"><\/span>Hvad TG betyder i forbindelse med printpladematerialer<span class=\"ez-toc-section-end\"><\/span><\/h2><p>TG (glasovergangstemperatur) er det punkt, hvor epoxyharpiksen begynder at skifte fra en stiv, glasagtig tilstand til en bl\u00f8dere, gummiagtig tilstand.<\/p><p>Under TG forbliver materialet stabilt og mekanisk st\u00e6rkt. Over TG begynder materialet at udvide sig hurtigere og mister sin stivhed.<\/p><p>I forbindelse med PCB-design har dette direkte indflydelse p\u00e5:<\/p><ul class=\"wp-block-list\"><li>Dimensionsstabilitet<\/li>\n\n<li>Via p\u00e5lidelighed<\/li>\n\n<li>Justering af lag<\/li>\n\n<li>Mekanisk holdbarhed p\u00e5 lang sigt<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Standard_TG_vs_High_TG_FR4\"><\/span>FR4 med standard TG kontra FR4 med h\u00f8j TG<span class=\"ez-toc-section-end\"><\/span><\/h2><p>FR4-materialer inddeles generelt i tre kategorier:<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Standard_TG_FR4\"><\/span>Standard TG FR4<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li>TG omkring 130 \u00b0C\u2013140 \u00b0C<\/li>\n\n<li>Egnet til almindelig elektronik<\/li>\n\n<li>Almindeligt forekommende i billige forbrugerprodukter<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mid_TG_FR4\"><\/span>Mid TG FR4<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li>TG omkring 150 \u00b0C\u2013160 \u00b0C<\/li>\n\n<li>En god balance mellem ydeevne og pris<\/li>\n\n<li>Anvendes inden for industriel elektronik<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"High_TG_FR4\"><\/span>FR4 med h\u00f8jt TG<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li>TG \u2265 170 \u00b0C<\/li>\n\n<li>Udviklet til milj\u00f8er med h\u00f8je termiske belastninger<\/li>\n\n<li>Almindeligt anvendt i applikationer, der kr\u00e6ver h\u00f8j p\u00e5lidelighed<\/li><\/ul><p>Materialer med h\u00f8j TG-v\u00e6rdi bevarer deres strukturelle integritet gennem flere reflow-cyklusser, hvilket g\u00f8r dem velegnede til moderne SMT-processer.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_High_TG_FR4_Matters_in_PCB_Manufacturing\"><\/span>Hvorfor FR4 med h\u00f8jt TG-indhold er vigtigt i fremstillingen af printkort<span class=\"ez-toc-section-end\"><\/span><\/h2><p>I takt med at printkortkonstruktioner bliver mere komplekse, er den termiske belastning under produktion og drift steget markant.<\/p><p>Materialer med h\u00f8jt TG-indhold bidrager til at reducere:<\/p><ul class=\"wp-block-list\"><li>Nedbrydning af harpiks under lodning<\/li>\n\n<li>Risiko for delaminering<\/li>\n\n<li>Via revner<\/li>\n\n<li>Vridning i flerlagsstrukturer<\/li><\/ul><p>De forbedrer desuden p\u00e5lideligheden p\u00e5 lang sigt i barske milj\u00f8er.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Electrical_and_Mechanical_Properties\"><\/span>Elektriske og mekaniske egenskaber<span class=\"ez-toc-section-end\"><\/span><\/h2><p>FR4 med h\u00f8jt TG har generelt de samme elektriske egenskaber som standard FR4, men med forbedret termisk adf\u00e6rd.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Ejendom<\/th><th>Typisk r\u00e6kkevidde<\/th><\/tr><tr><td>TG<\/td><td>\u2265170 \u00b0C<\/td><\/tr><tr><td>Dielektricitetskonstant (Dk)<\/td><td>4,2\u20134,7<\/td><\/tr><tr><td>Dissipationsfaktor (Df)<\/td><td>0,015\u20130,020<\/td><\/tr><tr><td>Termisk udvidelse (Z-aksen)<\/td><td>Lavere end standard FR4<\/td><\/tr><tr><td>Nedbrydningstemperatur<\/td><td>~300 \u00b0C<\/td><\/tr><\/tbody><\/table><\/figure><p>Den vigtigste forbedring er den reducerede udvidelse langs Z-aksen, hvilket har direkte indflydelse p\u00e5 p\u00e5lideligheden.<\/p><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\/2026\/06\/High-TG-FR4-PCB-Material-1.jpg\" alt=\"FR4-printplademateriale med h\u00f8j TG-v\u00e6rdi\" class=\"wp-image-5895\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_High_TG_FR4_Is_Used\"><\/span>Hvor FR4 med h\u00f8jt TG anvendes<span class=\"ez-toc-section-end\"><\/span><\/h2><p>FR4 med h\u00f8j TG er ikke n\u00f8dvendigt for alle produkter, men det bliver afg\u00f8rende, n\u00e5r p\u00e5lideligheden skal \u00f8ges, eller temperaturen stiger.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Automotive_Electronics\"><\/span>Elektronik til biler<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Moderne k\u00f8ret\u00f8jer er i h\u00f8j grad afh\u00e6ngige af elektroniske styresystemer, der uds\u00e6ttes for h\u00f8je temperaturer under motorhjelmen.<\/p><p>Applikationerne omfatter:<\/p><ul class=\"wp-block-list\"><li>Motorstyringsenheder (ECU)<\/li>\n\n<li>Servostyringssystemer<\/li>\n\n<li>Batteristyringssystemer (BMS)<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Power_Electronics\"><\/span>Effektelektronik<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Materialer med h\u00f8jt TG-indhold anvendes i vid udstr\u00e6kning inden for:<\/p><ul class=\"wp-block-list\"><li>Switchede str\u00f8mforsyninger<\/li>\n\n<li>Omformere<\/li>\n\n<li>Industrielle str\u00f8mmoduler<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Communication_Systems\"><\/span>Kommunikationssystemer<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Anvendes i:<\/p><ul class=\"wp-block-list\"><li>Basestationskort<\/li>\n\n<li>Udstyr til netv\u00e6rksinfrastruktur<\/li>\n\n<li>Optiske moduler<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Server_and_Data_Systems\"><\/span>Server- og datasystemer<span class=\"ez-toc-section-end\"><\/span><\/h3><p>FR4 med h\u00f8jt TG-indhold findes typisk i:<\/p><ul class=\"wp-block-list\"><li>Server-bundkort<\/li>\n\n<li>Opbevaringssystemer<\/li>\n\n<li>Computerkort med h\u00f8j t\u00e6thed<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Manufacturing_Considerations\"><\/span>Overvejelser vedr\u00f8rende fremstilling<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Anvendelsen af materialer med h\u00f8j TG p\u00e5virker fremstillingen af printkort p\u00e5 flere m\u00e5der.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Drilling_and_Via_Reliability\"><\/span>Boring og via-p\u00e5lidelighed<span class=\"ez-toc-section-end\"><\/span><\/h3><p>En mindre udvidelse af Z-aksen forbedrer p\u00e5lideligheden af spr\u00f8jtestaven under termiske cyklusser.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lamination_Process\"><\/span>Lamineringsproces<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Materialer med h\u00f8jt TG-v\u00e6rdi kr\u00e6ver ofte:<\/p><ul class=\"wp-block-list\"><li>H\u00f8jere lamineringstryk<\/li>\n\n<li>Styrede opvarmningsprofiler<\/li>\n\n<li>Streng styring af harpiksgennemstr\u00f8mningen<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Reflow_Resistance\"><\/span>Reflow-modstand<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Kredsl\u00f8bskortene skal kunne modst\u00e5 flere SMT-reflow-cyklusser uden delaminering eller bl\u00e6redannelse.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"High_TG_FR4_vs_Standard_FR4\"><\/span>FR4 med h\u00f8jt TG-indhold sammenlignet med standard FR4<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Funktion<\/td><td>Standard FR4<\/td><td>FR4 med h\u00f8jt TG<\/td><\/tr><tr><td>TG-v\u00e6rdi<\/td><td>130\u2013140 \u00b0C<\/td><td>\u2265170 \u00b0C<\/td><\/tr><tr><td>Termisk stabilitet<\/td><td>Moderat<\/td><td>H\u00f8j<\/td><\/tr><tr><td>Omkostninger<\/td><td>Lavere<\/td><td>Lidt h\u00f8jere<\/td><\/tr><tr><td>P\u00e5lidelighed<\/td><td>Generel anvendelse<\/td><td>H\u00f8j p\u00e5lidelighed<\/td><\/tr><tr><td>Egnethed til SMT<\/td><td>Grundl\u00e6ggende<\/td><td>Avanceret multi-reflow<\/td><\/tr><\/tbody><\/table><\/figure><p>Omkostningsforskellen er forholdsvis lille i forhold til den \u00f8gede p\u00e5lidelighed.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Limitations_of_High_TG_FR4\"><\/span>Begr\u00e6nsninger ved FR4 med h\u00f8jt TG-indhold<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Selvom et h\u00f8jt TG-indhold forbedrer den termiske ydeevne, er det stadig baseret p\u00e5 epoxyharpikssystemer.<\/p><p>Begr\u00e6nsningerne omfatter:<\/p><ul class=\"wp-block-list\"><li>St\u00f8rre dielektrisk tab ved h\u00f8je frekvenser<\/li>\n\n<li>Ikke egnet til mikrob\u00f8lgeovnsdesign<\/li>\n\n<li>Begr\u00e6nset ydeevne ved frekvenser over flere GHz<\/li>\n\n<li>Varmeledningsevnen er stadig forholdsvis lav<\/li><\/ul><p>Til RF- eller ultrahurtige anvendelser foretr\u00e6kkes materialer med lavt tab, s\u00e5som Rogers eller Megtron.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Material_Selection_Strategy\"><\/span>Strategi for materialevalg<span class=\"ez-toc-section-end\"><\/span><\/h2><p>I praksis inden for printkortudvikling er FR4 med h\u00f8j TG ofte en \u00bbmellemvej\u00ab-l\u00f8sning.<\/p><p>En typisk udv\u00e6lgelseslogik er:<\/p><ul class=\"wp-block-list\"><li>Prisvenlig elektronik \u2192 Standard FR4<\/li>\n\n<li>Industri \/ bilindustri \u2192 FR4 med h\u00f8j TG<\/li>\n\n<li>H\u00f8jhastighed \/ RF \u2192 Rogers eller PTFE<\/li>\n\n<li>Ultrahurtige backplanes \u2192 Megtron eller Isolas h\u00f8jhastighedsserier<\/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\/2026\/06\/High-TG-FR4-PCB-Material-2.jpg\" alt=\"FR4-printplademateriale med h\u00f8j TG-v\u00e6rdi\" class=\"wp-image-5896\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/06\/High-TG-FR4-PCB-Material-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_High_TG_FR4_Suppliers\"><\/span>G\u00e6ngse leverand\u00f8rer af FR4 med h\u00f8jt TG-indhold<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Flere producenter af laminat leverer materialer med h\u00f8j TG, der er meget udbredt:<\/p><ul class=\"wp-block-list\"><li>Shengyi<\/li>\n\n<li>Kingboard<\/li>\n\n<li>ITEQ<\/li>\n\n<li>Isola<\/li>\n\n<li>Ventec<\/li><\/ul><p>Hver leverand\u00f8r tilbyder flere TG-kvaliteter, der im\u00f8dekommer forskellige krav til ydeevne og pris.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>OFTE STILLEDE SP\u00d8RGSM\u00c5L<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-1782283350742\"><strong class=\"schema-faq-question\">Sp\u00f8rgsm\u00e5l: Er FR4 med h\u00f8jt TG-indhold altid bedre end standard FR4?<\/strong> <p class=\"schema-faq-answer\">A: Ikke altid. Et h\u00f8jt TG-tal er kun n\u00f8dvendigt, n\u00e5r printkortet uds\u00e6ttes for st\u00f8rre termisk belastning eller flere reflow-cyklusser.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782283361368\"><strong class=\"schema-faq-question\">Sp\u00f8rgsm\u00e5l: Forbedrer FR4 med h\u00f8jt TG-indhold signalegenskaberne?<\/strong> <p class=\"schema-faq-answer\">A: Ikke i n\u00e6vnev\u00e6rdig grad. Det forbedrer hovedsageligt den termiske og mekaniske p\u00e5lidelighed snarere end h\u00f8jfrekvensydelsen.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782283520743\"><strong class=\"schema-faq-question\">Sp\u00f8rgsm\u00e5l: Hvilken TG-v\u00e6rdi betragtes som h\u00f8j TG?<\/strong> <p class=\"schema-faq-answer\">A: Normalt klassificeres materialer med en TG p\u00e5 \u2265 170 \u00b0C som FR4 med h\u00f8j TG.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782283531090\"><strong class=\"schema-faq-question\">Sp\u00f8rgsm\u00e5l: Er FR4 med h\u00f8jt TG-indhold dyrere?<\/strong> <p class=\"schema-faq-answer\">A: Ja, men prisforskellen er som regel ikke s\u00e6rlig stor i forhold til standard FR4.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782283586027\"><strong class=\"schema-faq-question\">Sp\u00f8rgsm\u00e5l: Kan FR4 med h\u00f8jt TG-indhold anvendes i design af h\u00f8jhastigheds-printkort?<\/strong> <p class=\"schema-faq-answer\">A: Det kan anvendes til applikationer med moderat h\u00f8j hastighed, men til RF-signaler eller signaler med meget h\u00f8j hastighed foretr\u00e6kkes laminater med lavt tab.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>FR4 med h\u00f8j TG er udviklet til printkortanvendelser, der kr\u00e6ver forbedret termisk stabilitet og p\u00e5lidelighed. Det mindsker vridning, forbedrer via-ydelsen og anvendes i vid udstr\u00e6kning inden for bilindustrien, effektelektronik og serversystemer. Til RF- og h\u00f8jhastighedsdesign er der dog stadig behov for materialer med lavt tab.<\/p>","protected":false},"author":1,"featured_media":5897,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[483,484],"class_list":["post-5893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-fr4-pcb","tag-pcb-material"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>High TG FR4 PCB Material Guide<\/title>\n<meta name=\"description\" content=\"Understand High TG FR4 PCB material, including glass transition temperature, thermal reliability, applications, and differences from standard FR4 in PCB manufacturing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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Is high TG FR4 always better than standard FR4?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A: Not always. High TG is only necessary when the PCB is exposed to higher thermal stress or multiple reflow cycles.","inLanguage":"da-DK"},"inLanguage":"da-DK"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283361368","position":2,"url":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283361368","name":"Q: Does high TG FR4 improve signal performance?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A: Not significantly. It mainly improves thermal and mechanical reliability rather than high-frequency performance.","inLanguage":"da-DK"},"inLanguage":"da-DK"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283520743","position":3,"url":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283520743","name":"Q: What TG value is considered high TG?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A: Typically, materials with TG \u2265 170\u00b0C are classified as high TG FR4.","inLanguage":"da-DK"},"inLanguage":"da-DK"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283531090","position":4,"url":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283531090","name":"Q: Is high TG FR4 more expensive?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A: Yes, but the cost difference is usually moderate compared to standard FR4.","inLanguage":"da-DK"},"inLanguage":"da-DK"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283586027","position":5,"url":"https:\/\/www.topfastpcb.com\/blog\/high-tg-fr4-pcb\/#faq-question-1782283586027","name":"Q: Can high TG FR4 be used in high-speed PCB design?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A: It can be used for moderate high-speed applications, but for RF or very high-speed signals, low-loss laminates are preferred.","inLanguage":"da-DK"},"inLanguage":"da-DK"}]}},"_links":{"self":[{"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/posts\/5893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/comments?post=5893"}],"version-history":[{"count":1,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/posts\/5893\/revisions"}],"predecessor-version":[{"id":5898,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/posts\/5893\/revisions\/5898"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/media\/5897"}],"wp:attachment":[{"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/media?parent=5893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/categories?post=5893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/da\/wp-json\/wp\/v2\/tags?post=5893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}