Hi:

If a Luxeon K2 LED is mounted on the top side of a PCB what's the best 
strategy to get the heat to the bottom side?
For example is it better to use as many through holes as possible and 
fill them with solder, or use a larger hole and solder in a copper wire?
Or maybe make a custom copper plug and solder a number of them?

The K2 has a higher operating temperature than the standard emitters 
that run on 350 ma and can be run at anywhere between 350 and 1000 ma 
allowing a trade off in heat sinking and output.  The LM3404 is rated to 
1 Amp.

Have Fun,

Brooke Clarke

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