{"id":6,"date":"2026-08-31T18:01:58","date_gmt":"2026-08-31T10:01:58","guid":{"rendered":"http:\/\/wh-nu7wehbv22kcbyp04h6.my3w.com\/?post_type=eb_product&p=6"},"modified":"2026-09-04T09:53:02","modified_gmt":"2026-09-04T01:53:02","slug":"pcb-fr4-multilayer","status":"publish","type":"page","link":"https:\/\/www.ebestpcba.com\/index.php\/pcb-fr4-multilayer\/","title":{"rendered":"FR4 & Multilayer PCB Manufacturer"},"content":{"rendered":"\n
\r\n
\r\n
\r\n
\r\n
Home<\/a> \/ Capabilities<\/a> \/ FR4 & Multilayer PCB<\/div>\r\n
FR4 PCB manufacturing<\/div>\r\n

FR4 & Multilayer PCB Manufacturing<\/h1>\r\n

Send your PCB files for review. EBest PCBA checks the stack-up, laminate, copper weight, impedance, panelization, and inspection requirements before quotation and production.<\/p>\r\n

Send Gerber & Stack-Up for Review<\/a>Request NDA First<\/a><\/div>\r\n

First response within 12 hours \u00b7 Final capability, lead time, and required inspection records confirmed after file review<\/p>\r\n<\/div>\r\n

\r\n\"Representative\r\n
Multilayer PCB sample showing completed board construction.<\/figcaption>\r\n<\/figure>\r\n<\/div>\r\n<\/section>\r\n
\r\n
\r\n
Routine production<\/em>1-10 layers<\/b>Standard FR4 production range<\/span><\/div>\r\n
Special review<\/em>10-32 layers<\/b>Layer count and stack-up confirmed after file review<\/span><\/div>\r\n
Routine copper<\/em>0.5-3 oz<\/b>Inner-layer range; outer-layer routine range 1-4 oz<\/span><\/div>\r\n
Special review<\/em>5-10 oz<\/b>Heavy copper requires stack-up and manufacturability review.<\/span><\/div>\r\n<\/div>\r\n<\/section>\r\n
\r\n
\r\n
Manufacturing capability<\/div>\r\n

FR4 & Multilayer PCB Manufacturing Capability Window<\/h2>\r\n

<\/p>\r\n

\r\n
\r\n\r\n\r\n
Capability<\/th>Standard Range<\/th>Special Review<\/th><\/tr><\/thead>\r\n
FR4 material family<\/td>Standard Tg 130-140, mid-Tg 150 and high-Tg 170-180 options<\/td>Halogen-free, Tg above 180 and project-specific specialty families<\/td><\/tr>\r\n
Layer count<\/td>1-10 layers<\/td>10\u201332 layers; stack-up and manufacturability confirmed from project files<\/td><\/tr>\r\n
Inner-layer copper<\/td>0.5-3 oz<\/td>5-10 oz, subject to geometry and reliability review<\/td><\/tr>\r\n
Outer-layer copper<\/td>1-4 oz<\/td>5-10 oz, subject to line width, spacing and plating balance<\/td><\/tr>\r\n
Finished board thickness<\/td>Common production window approximately 0.4-3.5 mm<\/td>Thinner or thicker constructions reviewed with stack-up and finish<\/td><\/tr>\r\n
Minimum finished hole<\/td>0.20 mm<\/td>0.15 mm after drill, plating and aspect-ratio review<\/td><\/tr>\r\n
Aspect ratio<\/td>Up to 8:1<\/td>Up to 10:1 after construction review<\/td><\/tr>\r\n
Line \/ space at 1 oz<\/td>4 \/ 4 mil reference at 1 oz copper<\/td>3 \/ 3 mil after copper and yield evaluation<\/td><\/tr>\r\n
Surface finish<\/td>OSP, lead-free HASL, ENIG and other established routes<\/td>Immersion silver or tin, ENEPIG, gold fingers and combined requirements<\/td><\/tr>\r\n
Controlled impedance<\/td>Engineering review with confirmed stack-up and trace dimensions<\/td>Tighter tolerances or unusual structures require coupon and process review<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

Capability note:<\/b> final manufacturability depends on the complete combination of material, copper weight, drill, stack-up, surface finish, tolerances, and inspection requirements.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n

\r\n
\r\n
\r\n
Materials and stack-up<\/div>\r\n

Material and Stack-Up Selection Before Fabrication<\/h2>\r\n

Material selection is reviewed together with copper weight, finished board thickness, assembly temperatures, electrical requirements, and documentation needs.<\/p>\r\n

\r\n
Standard and mid-Tg FR4<\/b>

Suitable for many commercial and industrial products where cost, availability, and standard assembly requirements are the main considerations.<\/p><\/article>\r\n

High-Tg FR4<\/b>

Used for lead-free assembly, higher thermal requirements, and multilayer constructions that need better dimensional stability.<\/p><\/article>\r\n

Halogen-free options<\/b>

Selected when halogen-free compliance is required, subject to laminate availability and electrical requirements.<\/p><\/article>\r\n

Project-specific families<\/b>

Special dielectric, high-frequency, or reliability requirements are reviewed before material approval.<\/p><\/article>\r\n<\/div>\r\n<\/div>\r\n

\"FR4
FR4 copper-clad laminate prepared for multilayer PCB production.<\/figcaption><\/figure>\r\n<\/div>\r\n<\/section>\r\n
\r\n
\r\n
\r\n
Impedance and stack-up engineering<\/div>\r\n

Controlled Impedance Review for FR4 Multilayer PCBs<\/h2>\r\n

<\/p>\r\n