I need to do an array of eight Luxeons and I have been considering just
doing the LEDs and driver circuit on one big thermal conductive PCB instead
of doing individual star boards and a separate driver board.  Can anyone
recommend a PCB house that does these boards and would have good prices on
smallish quantities like about 100 of them.

I also wonder about the best way to then attach this big board to the heat
sink when it is done.  It will be about 2" X 5".  Thermal adhesive would
work good, but makes it near impossible to change an LED later since you are
soldering to essentially a big heat sink.  I am thinking that slathering the
back with heat sink compound and having about a dozen screws through the
board to hold it to the heat sink would be best.

Also, I need to run the LEDs pretty hard on minimum heat sink so I am
looking for good performing PCB material although I am not sure that there
is big difference between them?

Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com


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