THERMAL INSULATORS THERMO PAD TO-3; Insulator Body Material:Fibreglass Silicone Elastomer; Thermal Conductivity:0.9W/m.K; Breakdown Voltage Vbr:4.5kV; Thickness:0.229mm; Volume Resistivity:10ohm-m; Thermal Impedance:1.45 C/W ;RoHS Compliant: Yes