A Complete Guide to FR-4 Substrate Selection for Global PCB Industry
FR-4 is the most mainstream rigid PCB substrate worldwide, composed of E-glass fiber and flame-retardant epoxy resin. It is widely adopted in global electronics for balanced thermal stability, electrical insulation, mechanical performance and cost advantage.
Key Core Properties
1.Tg Glass Transition Temperature
Standard Tg: 130–140°C for consumer electronics;Mid Tg: 150–170°C for industrial & automotive electronics;High Tg: ≥180°C for 5G, server and high-reliability products.
3.Electrical Performance
UL94 V-0 flame retardant, RoHS & Halogen-free compliant for global market access.
Globally Recognized FR-4 Manufacturers
Kingboard (KB)：Global top capacity, stable quality, best for consumer and mass production.
Shengyi：Premium high-Tg & halogen-free grade, widely used in automotive, industrial and communication products.
Nan Ya：Excellent dimensional stability, preferred for power supply, medical and halogen-free required projects.
ITEQ / TUC：Professional for high-speed, low-loss FR-4, ideal for server, network and 5G base station PCB.
Isola / Panasonic / Ventec：High-end grade for European, American and Japan industrial, medical and automotive premium projects.
Double-sided FR-4 PCB-------CHNPCB
Selection Principle
Match Tg and dielectric parameters with product working temperature and signal demand; choose halogen-free version for EU and global mainstream markets; adopt famous qualified suppliers to ensure stability and customer approval.
CHNPCB:
Choose CHNPCB. We will select the optimal PCB raw materials, including FR-4 substrates, based on your specific requirements, ensuring the best performance and cost-effectiveness for your projects.
Welcome to send your GERBER files and detailed technical requirements to our official email: PCB@CHNPCB.COM. We will customize and select the most suitable FR-4 substrate and PCB solution according to your project demands.