Catalog > Electro-Mechanical Components > Heatsinks > U-Shaped Heatsink Black Anodised for Black Anodised Heatsink FK230SAL1 Heatsink Black Anodised 21K/W for TO220 20.29 ZAR inc for 1 Each 22 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Material : Aluminium For Transistor : TO 220 Width : 20.5 mm Height : 19.5 mm Length : 19 mm Thermal Resistance : 21 K/W Surface : Black Anodised Version : Without Solder Lug