Catalog > Electro-Mechanical Components > Fasteners Hardware > Electronic Hardware > Heatsink Insulators and Bushes Kapton Insulator Washer Kapton / Insulator Washer for TO248 TO218 TO247 Kapton Insulator Washer for TO248 TO218 TO247 Part No: KAP218 18.40 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications for Semiconductor-design : TO 218, TO 247, TO 248, 24 x 21 mm For transistor TO 248 TO 218 TO 247 Material : Polyimide-carrier foil with silicone-free phase changing thermal conductive layer completely coated on both sides Phase Change Temperature : 52°C Thermal Resistance : 0.15 K/w [At 1 Inch2; = 6.45 Cm2; = To 3 (Kap 3)] Thermal Conductivity : 0.45 W/m·K (substrate) Temperature Range : -40°C ~ +150°C Insulation Resistance : 1014 Ω Material Thickness : 0.077mm (substrate 0.05mm) Extensibility : 30 % Dielectric Strength : 7.8 kV Class of Flammibility : UL 94 V-0 Type of Delivery : Cut