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FR-4 glass epoxy is a thermoset composite material engineered for electrical insulation and structural performance in demanding environments. It is manufactured using woven fiberglass cloth laminated with epoxy resin, resulting in a material with strong mechanical integrity and consistent dimensional stability. This composition enables reliable performance across electrical and industrial applications. FR-4 glass epoxy offers excellent dielectric strength, low moisture absorption, and flame-retardant properties, making it suitable for environments requiring both electrical reliability and fire safety. It performs effectively at temperatures up to 130°C (266°F) while maintaining structural integrity. This material is a dependable choice for applications that require consistent electrical insulation, mechanical durability, and flame resistance across a wide range of operating conditions.

FR4

Key Characteristics of FR4

How FR4 is Used

What Is FR4?

Technical Specifications

Technical Data Sheet

Find FR4 Materials

Brand

Color

Shape

Thickness

Width

Length

Material Type

FR4 | Sheet | Natural

FR4 | Sheet | Black