Catalog > Electro-Mechanical Components > Heatsinks > Extruded Extruded Heatsink for PCB Mounting for TO-220 Heatsink SK525-25ST Extruded Heatsink for PCB Mounting for TO-220 • Rth= 9 K/W • Length : 25mm • Black Anodised surface 165.30 ZAR inc for 1 Each 6 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Way of Fixation: Transistor Clip Mounting For Transistor: TO 220 Width: 19.4 mm Height: 28 mm Length: 25 mm Thermal Resistance: 9 K/W Version: with 2 solder pins Surface: Black Anodised