China Epoxy Resin Fiberglass Fr4 Copper Clad Laminate Insulation Material, Find details about China Fr4, Copper Clad Laminate from Epoxy Resin Fiberglass Fr4 Copper Clad Laminate Insulation Material
Item | Unit | Value | Typical Value | |
Copper foil peel strength | 125ºC | N/mm | ≥0.7 | 1.5 |
Float 288ºC/10Sec | ≥1.05 | 1.65 | ||
Thermal Stress(Float 288ºC/unetched) | sec | ≥10 | 120 | |
Warpage(without treatment) | % | ≤1.0 | 0.2 | |
Flammability(UL94) | / | V-0 | V-0 | |
Vitrification transition temperature | ºC | ≥130 | 138 | |
Dielectric constant(1MHz) | / | ≤5.5 | 5 | |
Dielectric loss factor(1MHz) | / | ≤0.035 | 0.025 | |
Arc resistance | sec | ≥60 | 110 | |
Moisture absorption | % | ≤0.8 | 0.3 | |
Comparative tracking index | V | ≥150 | 175 | |
Dimensional stability | Warp | ppm | ±300 | -200 |
Fill | -180 |