Aluminium heatsink clip on to 220 black anodised with retaining clip fischer elektronik sk104 25 4 thf104 a clip on heat sink that has solder pins for the secure vertical mounting of electronic components having a to 220 sot 32 to 3 p type package the heatsink is manufactured from 1 5mm thick alloy with a black anodised finish that increases radiative cooling fischer elektronik sk10425 4 thf104 heatsink sk 104 25 4 stc 220 thf 104