LED lights typically burn several times
longer than incandescent or compact fluorescent lighting and require less than half the energy,
but they need some form of passive heatsink keep the high power light emitting
diodes from overheating.
Spread on thermal
employee spreads thermal compound around the inner ledge
of this extruded aluminum passive LED light heatsink. The LED circuit board,
which is made from 1.6-2mm thick aluminum, will conduct the heat from
the dozen or so LED elements to the metal heatsink frame and thus keep
temperatures in check.
LED board assembly with power wires attached. The board
assembly is built on a 1.6-2mm thick aluminum backed
Aluminum backed PCBs are sometimes called 'metal core printed circuit boards,' and
though made of a conductive material the white coating is electrically
Assembly with lens
Here a larger aluminum PCB is being screwed in place within the heatsink
which forms the lower half of the LED light bulb.
The small power supply converts 120/240V AC mains power to a lower
voltage (12V or 24V), it fits in the cavity behind the aluminum PCB (clearly