Fischer-Elektronik-15-U-Extruded-Heat-Sink-fischer-elektronik-ICK-35-SA-220-The-Fischer-Elektronik-15-U-Extruded-Heat-Sink-has-been-specially-developed-for-transistor-design-TO-220-The-effective-heat-dissipation-make-it-ideal-for-a-wide-range-of-applications-Fischer-Elektronik-ICK-35-SA-220-15-C-W-Heat-Sink-for-SOT32-TO220