PCB Star Heat Sinks – TruOpto OSMCPCB8060A, This heat sink, for use with surface mount power LEDs, consists of a 1.5mm thickness aluminium base with a copper-clad laminate PCB. Designed for 3W LEDs this heat sinks provides very effective thermal management. TruOpto OSMCPCB8060A PCB Star Heat Sink for 3W Power LEDs