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FR4 epoxy fiberglass laminate

FR-4 glass epoxy is a laminate sheet made from a woven fiberglass substrate and a flame-retardant epoxy resin.

FR4

INSULATION BOARD

≥ 340 MPa

Flexural strength
perpendicular to laminations

≥ 33 KJ/m²

Charpy impact
strength parallel to laminations

≥ 35 Kv

Electric strength perpendicular to
laminations(at 90℃ in 25# transformer oil)

≥ 5*(10²*10²) MΩ

Insulation resistance
after immersion in water

UL94-V0  Level

Combustibility

30 mg

Water absorption

130 ℃

TG

High mechanical strength at medium temperature and good electrical performance stability at a high temperature of 130 ℃. 

High mechanical and dielectric properties Good insulation performance, heat resistance and moisture resistance, stable electrical insulation performance.