{"id":29557,"date":"2026-07-03T18:31:25","date_gmt":"2026-07-03T10:31:25","guid":{"rendered":"https:\/\/www.bestpcbs.com\/blog\/?p=29557"},"modified":"2026-07-03T18:31:27","modified_gmt":"2026-07-03T10:31:27","slug":"megtron-6","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/","title":{"rendered":"Panasonic MEGTRON 6 Ultra-Low Loss High-Speed \u200b\u200bCopper-Clad Laminate"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Is_MEGTRON_6_PCB_Material\" >What Is MEGTRON 6 PCB Material?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#Why_Is_Panasonic_MEGTRON_6_Used_for_High-Speed_PCB_Design\" >Why Is Panasonic MEGTRON 6 Used for High-Speed PCB Design?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#MEGTRON_6_Material_Properties_Datasheet_Overview\" >MEGTRON 6 Material Properties &amp; Datasheet Overview<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Are_the_Dk_and_Df_Values_of_MEGTRON_6\" >What Are the Dk and Df Values of MEGTRON 6?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Are_the_Thermal_Conductivity_Tg_and_CTE_of_MEGTRON_6\" >What Are the Thermal Conductivity, Tg and CTE of MEGTRON 6?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#How_Should_a_MEGTRON_6_PCB_Stackup_Be_Designed\" >How Should a MEGTRON 6 PCB Stackup Be Designed?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Design_Factors_Affect_MEGTRON_6_PCB_Performance\" >What Design Factors Affect MEGTRON 6 PCB Performance?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Applications_Commonly_Use_MEGTRON_6_PCB\" >What Applications Commonly Use MEGTRON 6 PCB?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#MEGTRON_6_vs_FR4_What_Is_the_Difference\" >MEGTRON 6 vs FR4: What Is the Difference?<\/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.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#MEGTRON_4_vs_MEGTRON_6_Which_Material_Should_You_Choose\" >MEGTRON 4 vs MEGTRON 6: Which Material Should You Choose?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#MEGTRON_6_vs_MEGTRON_7_vs_MEGTRON_8_How_Are_They_Different\" >MEGTRON 6 vs MEGTRON 7 vs MEGTRON 8: How Are They Different?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Are_the_Alternative_Materials_to_MEGTRON_6\" >What Are the Alternative Materials to MEGTRON 6?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#What_Affects_MEGTRON_6_PCB_Cost\" >What Affects MEGTRON 6 PCB Cost?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#Why_Choose_EBest_as_Your_MEGTRON_6_PCB_Manufacturer\" >Why Choose EBest as Your MEGTRON 6 PCB Manufacturer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/#FAQs_About_MEGTRON_6_PCB_Material\" >FAQs About MEGTRON 6 PCB Material<\/a><\/li><\/ul><\/nav><\/div>\n<div class=\"yzp-no-index\"><\/div>\n<p><strong><a href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/\" title=\"\">MEGTRON 6 <\/a><\/strong>is a Panasonic copper-clad laminate and prepreg system for low-loss, high-speed multilayer PCB projects. It is used when standard FR4 cannot control insertion loss, impedance stability or reflow reliability well enough. This guide explains material properties, Dk\/Df values, thermal data, stackup design, applications, material comparisons, cost factors and China source-factory manufacturing support.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6.png\"><img loading=\"lazy\" decoding=\"async\" width=\"793\" height=\"486\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6.png\" alt=\"MEGTRON 6, https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/\" class=\"wp-image-29570\" style=\"aspect-ratio:3\/2;object-fit:cover;width:800px\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6.png 793w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-300x184.png 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-768x471.png 768w\" sizes=\"auto, (max-width: 793px) 100vw, 793px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_MEGTRON_6_PCB_Material\"><\/span>What Is MEGTRON 6 PCB Material?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong><a href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/\" title=\"\">MEGTRON 6 <\/a>is a Panasonic low-loss PCB material for dense multilayer PCB designs.<\/strong> It is designed for stable signal transmission, strong heat resistance and reliable lamination performance.<\/p>\n\n\n\n<p>Common material references include laminate R-5775 and prepreg R-5670. In PCB production, it is often used for controlled impedance boards, long differential pairs, high-layer-count structures and BGA routing.<\/p>\n\n\n\n<p><strong>MEGTRON 6 is not a general FR4 replacement for every product.<\/strong> It is selected when the project has clear requirements for low dielectric loss, stable Dk and better high-speed PCB reliability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Is_Panasonic_MEGTRON_6_Used_for_High-Speed_PCB_Design\"><\/span>Why Is Panasonic MEGTRON 6 Used for High-Speed PCB Design?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Panasonic MEGTRON 6 is used to reduce signal loss and improve multilayer PCB stability.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lower dielectric loss:<\/strong> Df is lower than many standard FR4 materials, so long signal paths can keep cleaner data transmission.<\/li>\n\n\n\n<li><strong>Stable impedance support:<\/strong> Stable Dk helps trace width, spacing and dielectric thickness work together more predictably.<\/li>\n\n\n\n<li><strong>Better insertion loss control:<\/strong> It supports routers, switches, servers, backplanes and communication boards with long differential pairs.<\/li>\n\n\n\n<li><strong>HDI compatibility:<\/strong> It fits dense BGA escape routing, blind vias, buried vias and high-layer-count PCB structures.<\/li>\n\n\n\n<li><strong>Heat resistance:<\/strong> High Tg, strong T288 performance and controlled CTE help reduce lamination and reflow reliability risk.<\/li>\n\n\n\n<li><strong>Smoother copper support:<\/strong> H-VLP copper can reduce conductor loss when the channel loss budget is tight.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"MEGTRON_6_Material_Properties_Datasheet_Overview\"><\/span>MEGTRON 6 Material Properties &amp; Datasheet Overview<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>The Panasonic datasheet should be checked before stackup approval because values can vary by glass style, copper foil and material version.<\/strong> The main review items are Dk, Df, Tg, CTE, Td, T288, peel strength and thermal conductivity.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Parameter<\/th><th>Typical Value<\/th><th>Notes<\/th><\/tr><\/thead><tbody><tr><td>Dk @ 13GHz<\/td><td>3.34 \/ 3.62<\/td><td>Low Dk glass \/ normal glass<\/td><\/tr><tr><td>Df @ 13GHz<\/td><td>0.0037 \/ 0.0046<\/td><td>Low Dk glass \/ normal glass<\/td><\/tr><tr><td>Tg DSC<\/td><td>185\u00b0C<\/td><td>Typical value<\/td><\/tr><tr><td>Tg DMA<\/td><td>210\u00b0C<\/td><td>R-5775(N) model data<\/td><\/tr><tr><td>Td<\/td><td>410\u00b0C<\/td><td>R-5775(N) model data<\/td><\/tr><tr><td>T288 With Copper<\/td><td>&gt;120 min<\/td><td>Typical value<\/td><\/tr><tr><td>CTE Z \u03b11<\/td><td>45 ppm\/\u00b0C<\/td><td>Below Tg<\/td><\/tr><tr><td>CTE Z \u03b12<\/td><td>260 ppm\/\u00b0C<\/td><td>Above Tg<\/td><\/tr><tr><td>Thermal Conductivity<\/td><td>0.42 W\/m\u00b7K<\/td><td>R-5775(N) model data<\/td><\/tr><tr><td>Water Absorption<\/td><td>0.14%<\/td><td>R-5775(N) model data<\/td><\/tr><tr><td>Peel Strength<\/td><td>0.8 kN\/m<\/td><td>1 oz H-VLP copper<\/td><\/tr><tr><td>Flammability<\/td><td>UL 94V-0<\/td><td>R-5775(N) model data<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>For quoting and production, confirm the exact Panasonic MEGTRON 6 datasheet, material code, copper type, thickness range and stackup before releasing the PCB files.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-c51b122f-9c22-477b-96e3-308e20dcb4a2\" href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/Panasonic-MEGTRON6-Datasheet-EBest-Circuit.pdf\">Panasonic MEGTRON6 Datasheet-EBest Circuit<\/a><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/Panasonic-MEGTRON6-Datasheet-EBest-Circuit.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-c51b122f-9c22-477b-96e3-308e20dcb4a2\">Download<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_the_Dk_and_Df_Values_of_MEGTRON_6\"><\/span>What Are the Dk and Df Values of MEGTRON 6?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>The MEGTRON 6 dielectric constant is about 3.34 to 3.62 at 13GHz, and the Df value is about 0.0037 to 0.0046 at 13GHz.<\/strong> The exact value depends on glass style and material version.<\/p>\n\n\n\n<p>Dk affects impedance and signal speed. Df affects dielectric loss and channel attenuation. Therefore, both values should be used in stackup simulation before routing.<\/p>\n\n\n\n<p><strong>For production, do not copy a generic value into the design without checking the actual laminate and prepreg combination.<\/strong> A small Dk change can affect trace width, spacing, impedance and timing on controlled impedance PCB projects.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_the_Thermal_Conductivity_Tg_and_CTE_of_MEGTRON_6\"><\/span>What Are the Thermal Conductivity, Tg and CTE of MEGTRON 6?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Thermal conductivity is typically about 0.42 W\/m\u00b7K, Tg is commonly listed around 185\u00b0C by DSC, and Z-axis CTE is about 45 ppm\/\u00b0C before Tg.<\/strong> These values support reliable multilayer PCB fabrication.<\/p>\n\n\n\n<p>Thermal conductivity helps heat spread through the laminate, although copper planes still carry most heat in many PCB designs. Tg and CTE matter during lamination, reflow and thermal cycling.<\/p>\n\n\n\n<p><strong>High Tg and controlled CTE reduce delamination, barrel cracking and resin stress risk.<\/strong> For thick boards, backplanes and high-layer-count PCB, these values should be reviewed together with copper balance, hole structure and assembly temperature.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Should_a_MEGTRON_6_PCB_Stackup_Be_Designed\"><\/span>How Should a MEGTRON 6 PCB Stackup Be Designed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>The PCB stackup should be built around impedance, insertion loss, layer count and manufacturable dielectric thickness.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Confirm the signal target first:<\/strong> Define single-ended impedance, differential impedance, frequency range, loss limit and longest trace path.<\/li>\n\n\n\n<li><strong>Select routing structure:<\/strong> Use microstrip for outer layers, stripline for better shielding and dual stripline only when spacing and loss are acceptable.<\/li>\n\n\n\n<li><strong>Set dielectric thickness:<\/strong> Match core and prepreg thickness with available Panasonic material instead of using theoretical values only.<\/li>\n\n\n\n<li><strong>Control copper weight:<\/strong> Keep copper thickness practical for etching accuracy, impedance tolerance and current carrying requirements.<\/li>\n\n\n\n<li><strong>Keep reference planes continuous:<\/strong> Avoid split-plane crossings under high-speed traces because broken return paths create noise and impedance jumps.<\/li>\n\n\n\n<li><strong>Balance the copper layout:<\/strong> Keep copper distribution symmetrical across the stackup to reduce bow, twist and lamination stress.<\/li>\n\n\n\n<li><strong>Plan via structures early:<\/strong> Use through vias, blind vias, buried vias or back drilling based on BGA escape routing and loss budget.<\/li>\n\n\n\n<li><strong>Add impedance coupons:<\/strong> Place coupons on the production panel so the finished PCB can be measured against the approved stackup.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Design_Factors_Affect_MEGTRON_6_PCB_Performance\"><\/span>What Design Factors Affect MEGTRON 6 PCB Performance?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Final PCB performance depends on material selection, layout discipline, copper treatment, via transition and production control.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Copper roughness:<\/strong> Smoother copper helps reduce conductor loss, especially in long high-speed channels.<\/li>\n\n\n\n<li><strong>Trace geometry:<\/strong> Trace width, spacing and copper thickness directly affect impedance and insertion loss.<\/li>\n\n\n\n<li><strong>Via stub length:<\/strong> Long unused via barrels can create resonance and loss, so back drilling may be required.<\/li>\n\n\n\n<li><strong>Return path quality:<\/strong> A continuous ground reference keeps signal current stable and reduces crosstalk.<\/li>\n\n\n\n<li><strong>BGA escape routing:<\/strong> Dense fanout can force narrow traces and layer changes, so it should be reviewed before fabrication.<\/li>\n\n\n\n<li><strong>Solder mask influence:<\/strong> Outer-layer impedance can shift when solder mask thickness and coverage are ignored.<\/li>\n\n\n\n<li><strong>Glass weave effect:<\/strong> High-speed differential pairs may be affected by glass\/resin distribution, so routing angle and spread glass can matter.<\/li>\n\n\n\n<li><strong>Manufacturing tolerance:<\/strong> Etching, plating, lamination thickness and registration control determine whether the final PCB matches the design.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Applications_Commonly_Use_MEGTRON_6_PCB\"><\/span>What Applications Commonly Use MEGTRON 6 PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>This PCB material is commonly used in electronics that require low loss, stable impedance and reliable multilayer construction.<\/strong> These projects usually include fast signals, dense routing or long transmission paths.<\/p>\n\n\n\n<p>Common applications include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Network switches and routers.<\/strong><\/li>\n\n\n\n<li><strong>Communication backplanes and line cards.<\/strong><\/li>\n\n\n\n<li><strong>Servers, storage systems and computing hardware.<\/strong><\/li>\n\n\n\n<li><strong>Wireless base station equipment.<\/strong><\/li>\n\n\n\n<li><strong>High-speed connector boards.<\/strong><\/li>\n\n\n\n<li><strong>Industrial control and automation PCB.<\/strong><\/li>\n\n\n\n<li><strong>Test and measurement instruments.<\/strong><\/li>\n\n\n\n<li><strong>Medical diagnostic electronics.<\/strong><\/li>\n\n\n\n<li><strong>Aerospace and defense electronics.<\/strong><\/li>\n\n\n\n<li><strong>HDI PCB and high-density BGA PCB.<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>These applications usually choose this laminate when FR4 creates too much signal loss or reliability risk.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"MEGTRON_6_vs_FR4_What_Is_the_Difference\"><\/span>MEGTRON 6 vs FR4: What Is the Difference?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>This laminate has lower loss and better high-speed stability than standard FR4, while FR4 has lower cost and wider availability.<\/strong> The choice depends on signal speed, loss budget and product reliability target.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Item<\/th><th>MEGTRON 6<\/th><th>FR4<\/th><\/tr><\/thead><tbody><tr><td>Loss Level<\/td><td>Low<\/td><td>Higher<\/td><\/tr><tr><td>Dk Stability<\/td><td>Better<\/td><td>Material-dependent<\/td><\/tr><tr><td>High-Speed Use<\/td><td>Strong<\/td><td>Limited<\/td><\/tr><tr><td>Cost<\/td><td>Higher<\/td><td>Lower<\/td><\/tr><tr><td>Availability<\/td><td>Confirm before production<\/td><td>Very common<\/td><\/tr><tr><td>Best Fit<\/td><td>Servers, routers, backplanes<\/td><td>General electronics<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>FR4 is suitable for many ordinary PCB projects.<\/strong> However, when the design includes long differential pairs, strict insertion loss limits or high-layer-count construction, this laminate is often the safer selection.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-vs-FR4.png\"><img loading=\"lazy\" decoding=\"async\" width=\"815\" height=\"623\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-vs-FR4.png\" alt=\"MEGTRON 6 vs FR4, https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/\" class=\"wp-image-29582\" style=\"aspect-ratio:3\/2;object-fit:contain;width:800px\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-vs-FR4.png 815w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-vs-FR4-300x229.png 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-vs-FR4-768x587.png 768w\" sizes=\"auto, (max-width: 815px) 100vw, 815px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"MEGTRON_4_vs_MEGTRON_6_Which_Material_Should_You_Choose\"><\/span>MEGTRON 4 vs MEGTRON 6: Which Material Should You Choose?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Choose MEGTRON 4 for moderate loss control and this laminate for stricter signal integrity and higher-speed multilayer PCB projects.<\/strong> The decision should be based on channel loss, layer count and budget.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Item<\/th><th>MEGTRON 4<\/th><th>MEGTRON 6<\/th><\/tr><\/thead><tbody><tr><td>Loss Level<\/td><td>Medium-low<\/td><td>Low<\/td><\/tr><tr><td>Cost<\/td><td>Lower<\/td><td>Higher<\/td><\/tr><tr><td>Typical Use<\/td><td>Improved PCB designs<\/td><td>Demanding high-speed PCB<\/td><\/tr><tr><td>Stackup Demand<\/td><td>Medium<\/td><td>Higher<\/td><\/tr><tr><td>Suitable Boards<\/td><td>Moderate-speed multilayer PCB<\/td><td>Backplanes, routers, servers<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>If the signal path is short and the product cost target is tight, MEGTRON 4 may be enough.<\/strong> If the project has long channels, dense BGA routing or strict loss limits, this grade is usually a better fit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"MEGTRON_6_vs_MEGTRON_7_vs_MEGTRON_8_How_Are_They_Different\"><\/span>MEGTRON 6 vs MEGTRON 7 vs MEGTRON 8: How Are They Different?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>This grade is a low-loss laminate, while MEGTRON 7 and MEGTRON 8 are aimed at more demanding data-rate and next-generation communication designs.<\/strong> Each grade should be selected by real channel requirements.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Item<\/th><th>MEGTRON 6<\/th><th>MEGTRON 7<\/th><th>MEGTRON 8<\/th><\/tr><\/thead><tbody><tr><td>Loss Level<\/td><td>Low<\/td><td>Very low<\/td><td>Advanced low loss<\/td><\/tr><tr><td>Cost Level<\/td><td>High<\/td><td>Higher<\/td><td>Highest<\/td><\/tr><tr><td>Use Range<\/td><td>Servers, routers, backplanes<\/td><td>5G, large data systems<\/td><td>Advanced communication hardware<\/td><\/tr><tr><td>Selection Logic<\/td><td>Balanced performance and cost<\/td><td>Lower loss demand<\/td><td>Future-facing designs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Many projects do not require the highest-grade material.<\/strong> A practical review should compare insertion loss target, material lead time, board yield and total project cost before selection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_the_Alternative_Materials_to_MEGTRON_6\"><\/span>What Are the Alternative Materials to MEGTRON 6?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Alternative materials should be evaluated by Dk, Df, availability, price, approved vendor list and fabrication yield.<\/strong> They are not automatic replacements unless the customer approves the material change.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Alternative Material<\/th><th>Main Use<\/th><th>Notes<\/th><\/tr><\/thead><tbody><tr><td>Isola I-Tera MT40<\/td><td>Low-loss multilayer PCB<\/td><td>Common comparison material<\/td><\/tr><tr><td>Isola Tachyon 100G<\/td><td>High-speed digital PCB<\/td><td>Strong loss performance<\/td><\/tr><tr><td>Rogers RO4000 Series<\/td><td>RF and mixed signal PCB<\/td><td>More RF-focused<\/td><\/tr><tr><td>Nelco N4000-13 Series<\/td><td>High-speed multilayer PCB<\/td><td>Used in telecom and networking<\/td><\/tr><tr><td>Shengyi Low-Loss Materials<\/td><td>Cost-sensitive projects<\/td><td>Datasheet review required<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Before switching materials, compare dielectric constant, dissipation factor, copper type, Tg, CTE, thickness availability and lamination behavior.<\/strong> For approved products, get written approval before replacing the original Panasonic material.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Affects_MEGTRON_6_PCB_Cost\"><\/span>What Affects MEGTRON 6 PCB Cost?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>This PCB cost is affected by the material system, board structure, process difficulty, testing level and delivery plan.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Material grade:<\/strong> R-5775(N), R-5775(K), R-5775(G) and other versions can differ in availability and price.<\/li>\n\n\n\n<li><strong>Board size:<\/strong> Larger panels consume more laminate and increase risk of warpage, especially in thick multilayer PCB.<\/li>\n\n\n\n<li><strong>Layer count:<\/strong> More layers increase lamination time, registration control difficulty and inspection work.<\/li>\n\n\n\n<li><strong>Copper thickness:<\/strong> Heavy copper or mixed copper weights raise etching and lamination difficulty.<\/li>\n\n\n\n<li><strong>Via structure:<\/strong> Blind vias, buried vias, stacked vias and back drilling add process steps and inspection cost.<\/li>\n\n\n\n<li><strong>Impedance tolerance:<\/strong> Tighter tolerance requires more careful stackup control and coupon testing.<\/li>\n\n\n\n<li><strong>Surface finish:<\/strong> ENIG, ENEPIG and immersion silver have different cost and reliability profiles.<\/li>\n\n\n\n<li><strong>Testing demand:<\/strong> AOI, X-ray, microsection, impedance test, electrical test and thermal stress test affect the final quote.<\/li>\n\n\n\n<li><strong>Prototype vs batch order:<\/strong> Small quantities have higher unit cost because setup and material preparation are shared by fewer boards.<\/li>\n\n\n\n<li><strong>Material lead time:<\/strong> Special thickness, copper type or approved material codes may extend delivery time.<\/li>\n<\/ul>\n\n\n\n<p><strong>For accurate pricing, provide Gerber files, drill files, stackup, impedance target, surface finish, quantity, inspection requirements and delivery address.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Choose_EBest_as_Your_MEGTRON_6_PCB_Manufacturer\"><\/span>Why Choose EBest as Your MEGTRON 6 PCB Manufacturer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>EBest supports this PCB material manufacturing from China with direct factory communication, stackup review and controlled production for global projects.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lower sourcing complexity:<\/strong> One source factory can handle material review, PCB fabrication, testing and export packaging.<\/li>\n\n\n\n<li><strong>Better manufacturability before production:<\/strong> DFM review helps find stackup gaps, narrow spacing, via risk, copper imbalance and impedance issues before fabrication starts.<\/li>\n\n\n\n<li><strong>Controlled impedance support:<\/strong> Stackup calculation, production coupons and impedance testing help reduce mismatch between design and finished PCB.<\/li>\n\n\n\n<li><strong>High-layer PCB experience:<\/strong> Multilayer boards, HDI PCB, BGA routing, back drilling and fine-line fabrication can be reviewed according to project requirements.<\/li>\n\n\n\n<li><strong>Quality records for shipment:<\/strong> AOI, X-ray, microsection, electrical test and impedance reports can be arranged when required.<\/li>\n\n\n\n<li><strong>Flexible order support:<\/strong> Prototype, small-batch and mass production projects can be quoted according to files, quantity and material availability.<\/li>\n\n\n\n<li><strong>Global delivery from China:<\/strong> EBest supports export packaging and international shipment without claiming overseas factories, overseas warehouses or false local branches.<\/li>\n\n\n\n<li><strong>Clear quotation support:<\/strong> Complete files receive a clearer price, lead time and process review, reducing repeated communication before order release.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-PCB.png\"><img loading=\"lazy\" decoding=\"async\" width=\"829\" height=\"543\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-PCB.png\" alt=\"MEGTRON 6 PCB, https:\/\/www.bestpcbs.com\/blog\/2026\/07\/megtron-6\/\" class=\"wp-image-29589\" style=\"aspect-ratio:3\/2;object-fit:contain;width:800px\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-PCB.png 829w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-PCB-300x197.png 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/07\/MEGTRON-6-PCB-768x503.png 768w\" sizes=\"auto, (max-width: 829px) 100vw, 829px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs_About_MEGTRON_6_PCB_Material\"><\/span>FAQs About MEGTRON 6 PCB Material<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Q1: Can this material support 112G or higher-speed channels?<\/strong><\/p>\n\n\n\n<p>A1: <strong>It can be used in many demanding digital channels, but the final result depends on trace length, copper roughness, via stubs and connector launch.<\/strong> For 112G-class designs, simulation and insertion loss testing are recommended before mass production.<\/p>\n\n\n\n<p><strong>Q2: Is this material suitable for RF PCB designs?<\/strong><\/p>\n\n\n\n<p><strong>A2: It can support some RF-related and mixed-signal PCB designs, especially communication hardware with digital and RF sections. <\/strong>However, dedicated RF laminates may perform better in microwave circuits, so the material should match the frequency range and impedance model.<\/p>\n\n\n\n<p><strong>Q3: What density value should be checked?<\/strong><\/p>\n\n\n\n<p>A3: <strong>This material density is usually less important than Dk, Df, Tg, CTE and thermal conductivity for PCB design.<\/strong> Confirm density from the exact Panasonic MEGTRON 6 datasheet, because the value may vary by grade and glass style.<\/p>\n\n\n\n<p><strong>Q4: Can this laminate be used with lead-free assembly?<\/strong><\/p>\n\n\n\n<p>A4: <strong>Yes. Its high Tg and thermal resistance make it suitable for lead-free reflow when the PCB is fabricated and stored correctly.<\/strong> Reflow profiles should still control peak temperature, dwell time and board support to reduce warpage and solder joint stress.<\/p>\n\n\n\n<p><strong>Q5: Does this material require special storage before fabrication?<\/strong><\/p>\n\n\n\n<p>A5: <strong>The laminate and prepreg should be stored under controlled temperature and humidity conditions, with sealed packaging protected from moisture.<\/strong> Moisture control is important because high-layer-count PCB materials can absorb humidity, which may increase lamination or reflow risk.<\/p>\n\n\n\n<p><strong>Q6: What copper foil works well with this material?<\/strong><\/p>\n\n\n\n<p>A6:<strong> Smooth copper foil is often preferred for lower conductor loss, especially when high-frequency signal loss is a concern. <\/strong>Copper roughness affects insertion loss, so the copper type should be included in the stackup review instead of selected after routing.<\/p>\n\n\n\n<p><strong>Q7: Can this laminate and FR4 be mixed in one PCB?<\/strong><\/p>\n\n\n\n<p>A7: <strong>Hybrid stackups are possible, but they require careful review.<\/strong> Different resin systems, Dk values, CTE behavior and lamination flow can affect impedance and reliability, so hybrid construction should be approved before fabrication starts.<\/p>\n\n\n\n<p><strong>Q8: What documents are required for a quote?<\/strong><\/p>\n\n\n\n<p>A8:<strong> A complete quote should include Gerber files, drill files, stackup, board thickness, copper weight, impedance target, surface finish, material request, quantity and test requirements. <\/strong><\/p>\n\n\n\n<p><strong>Q9: Is this material always better than FR408HR?<\/strong><\/p>\n\n\n\n<p>A9:<strong> Not always. This material usually offers stronger low-loss performance, while FR408HR may work for less demanding designs at a lower cost. <\/strong>The better material depends on signal speed, approved material list, reliability target and total project budget.<\/p>\n\n\n\n<p><strong>Q10: What causes impedance deviation on this type of PCB?<\/strong><\/p>\n\n\n\n<p>A10: <strong>Impedance deviation can come from dielectric thickness variation, copper plating thickness, etching tolerance, glass style, solder mask effect and routing changes. <\/strong>Controlled stackup review and impedance coupons help keep production boards close to design values.<\/p>\n\n\n\n<p><strong>Q11: Can this material be used for rigid-flex PCB?<\/strong><\/p>\n\n\n\n<p>A11:<strong> It is mainly used for rigid multilayer PCB. Rigid-flex projects may require different flexible materials and bonding systems.<\/strong> If a project has rigid-flex sections, the material match, bending area and lamination plan must be reviewed separately.<\/p>\n\n\n\n<p><strong>Q12: How can companies avoid wrong material substitution?<\/strong><\/p>\n\n\n\n<p>A12: <strong>Material risk can be reduced by requesting material confirmation, stackup approval, production records and quality reports when required.<\/strong> The purchase order should clearly state Panasonic MEGTRON 6, exact laminate\/prepreg requirements and approved substitutions.<\/p>\n\n\n\n<p><strong>This laminate is a strong material choice when a multilayer PCB must control signal loss, impedance stability and thermal reliability better than standard FR4.<\/strong> The best result comes from a clear stackup, verified Panasonic material, controlled copper selection, reliable via design and proper testing before shipment.<\/p>\n\n\n\n<p>If your project requires low-loss PCB fabrication, <strong><a href=\"https:\/\/www.bestpcbs.com\/products\/high-speed-pcb.htm\" title=\"\">high speed PCB<\/a><\/strong> or high-layer-count production, <strong><a href=\"https:\/\/www.bestpcbs.com\/\" title=\"\">EBest<\/a><\/strong> can review your files and provide a practical manufacturing quote. <strong>Send Gerber files, stackup, quantity and test requirements to <a href=\"mailto:sales@bestpcbs.com\">sales@bestpcbs.com<\/a> for a PCB quotation.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MEGTRON 6 is a Panasonic copper-clad laminate and prepreg system for low-loss, high-speed multilayer PCB projects. It is used when standard FR4 cannot control insertion loss, impedance stability or reflow reliability well enough. This guide explains material properties, Dk\/Df values, thermal data, stackup design, applications, material comparisons, cost factors and China source-factory manufacturing support. What [&hellip;]<\/p>\n","protected":false},"author":33247,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[175,174,5309],"tags":[6564,6563,6565,6567,6566],"class_list":["post-29557","post","type-post","status-publish","format-standard","hentry","category-best-pcb","category-bestpcb","category-pcb-material","tag-megtron-6-datasheet","tag-megtron-6-dielectric-constant","tag-megtron-6-pcb-material","tag-megtron-6-vs-fr4","tag-megtron-6-vs-megtron-7"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/29557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/users\/33247"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/comments?post=29557"}],"version-history":[{"count":10,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/29557\/revisions"}],"predecessor-version":[{"id":29590,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/29557\/revisions\/29590"}],"wp:attachment":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/media?parent=29557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/categories?post=29557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/tags?post=29557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}