HI-FLOW 225F-AC .004 4"X4" SHEET; Insulator Body Material:-; Thermal Conductivity:1W/m.K; Breakdown Voltage Vbr:-; Thickness:0.102mm; Volume Resistivity:-; Thermal Impedance:-; Dielectric Strength:-; Product Range:-; SVHC:No SVHC (07-Jul-2017); Length:4"; Overall Width:101.6mm; Packages Cooled:TO-220