PCB Star Heat Sinks – TruOpto OSMCPCB8060B, 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 1W LEDs this heat sinks provides very effective thermal management. TruOpto OSMCPCB8060B PCB Star Heat Sink for 1W Power LEDs