To220 heat sink clip or screw mounting trusemi bk t220 0052 02 to220 heatsink aluminium material black anodized finish 78cw thermal resistance clip on 51mm long 41mm wide 185mm high a black anodised heat sink which can be mounted to the to220 package either by screw or clip tags on the base of the heatsink can be soldered to board for added stability trusemi bk t220 0052 02 heatsink to 220 clip mounting 78cw