Catalog > Electro-Mechanical Components > Heatsinks > Extruded Standard Extruded Heatsinks for Standard / for Extruded Heatsink 3K/W Standard Extruded Heatsinks Part No: SK48-37,5AL 57.50 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: 3.5 - 2 K/W Length: 37.5 mm Surface: raw degreased aluminium (by the metre raw aluminium) Height: 20 mm Width: 65 mm Plate Thickness: 4 mm