Fischer elektronik heat sinks for to 3to 55sot 9sot 32to 220 fischer elektronik fk 202 sa cb the fischer elektronik 127mm 8 heat sink is a finger shaped heatsink with combi punching designed to a high standard and ideal for power semiconductors fischer elektronik fk 202 sa cb 8cw heat sink to3 to55 sot 9 sot 32 to220