... size of FR4 sheet 1.Description : Grade B FR-4 Insulation Plates are electrical alkali-free glass woven fabric base ... 130°C). 3.Color: yellow, green,red, back, lighe green 4. Applications: With high mechanical strength, Insulation, heat resistance, electrical properties ... 65Insulation resistance afterimpregnated in waterAΩ1.5*10131.5*1013B1.7*10131.7*10136Dissipation factor/3.3*10-23.3*10-27Dielectric ...