Epoxy Glass Fabric Laminate FR4 has high mechanical properties and dielectric properties, good heat resistance and mechanical processing, and low water absorption not easy deformation. Flame-retardant grades of up to UL94V0 level.
Mainly used as electrical insulating structures, PCB drilling bottom backup plate, etc.
Color: Shallow green, yellow
Specifications: 40 " 48", thickness and tolerances according to customer requirements. Thickness range: 0.08-100mmNO.Test ItemsUnitStandard Data
TEST Result
1 Outside-< 70< 702ThicknessMILCLASS M58.52 -59.543Volume resistanceMΩ . cm≥ 10 65.3*10 64Surface electric strengthMΩ≥ 10 44.3*10 55Dielectric loss tangent-≤ 5.44.66Well injectivity%≤ 0.80.247Tg Value (DSC)& deg; CTg≥ 130
Δ Tg≤ 5Tg 1 = 134.40
Δ Tg = 1.408Heat Stress-
288 C put in tin 20' sNo bubble,
No delamination