K7ITM wrote:

One way I've considered doing those heat pads on homebrew boards is to
drill a large hole there, say to just clear a 10AWG wire, tin the heat
pad, solder the part down, and finally slip a very short (e.g. 0.09")
length of tinned #10 into the hole, heating it to reflow to the part,
and solder around the the wire to the ground plane. Should work, but
haven't tried it (yet). Such a short, fat wire is pretty low thermal
resistance. You can also add some heat sinking on the back to pull
heat away from the wire stub. Toughest part might be cutting the wire
cleanly perpendicular to its axis. A reasonably clean cut followed by
a bit of filing would do it, and I can imagine better ways if I were
making several.

Cheers,
Tom

Sounds like you're thinking single-sided board. I was just going to pop
for a quick turn house that delivers two-sided, plated-through holes.
The price is not too bad, all things considered.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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