Catalog > Electro-Mechanical Components > Heatsinks > U-Shaped Heatsink Black Anodised for Black Anodised Heatsink Heatsink Black Anodised 21K/W for TO220 Part No: FK230SAL1 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 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