Catalog > Electro-Mechanical Components > Heatsinks > U-Shaped Heatsink 9K/W for TO-220 for 9K/W for TO-220 Heatsink Heatsink 9K/W for TO-220 Part No: SK09-37,5SA220/1 37.09 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 Thermal Resistance : 15.7 - 6.8K/W Length : 37.5mm Surface : Black Anodized Hole Pattern : TO 220 Height : 11.5mm Width : 29mm Bottom Thickness : 2.5mm