Well, I did find some mongo heat sinks that would be at ~5degC/Watt, which
would bring it into the range you are talking about - I'll have to look into
those more.

-Tony
>
> Hi Tony, your calculations sound ok but your
> design philosophy might need revising. ;o)
> Any soldered component run over about 50'C
> (that's about 25'C over ambient) REALLY reduces
> reliability. The PCB will darken, the solder
> will be exposed to expansion and heat stresses
> and it will soon get dry joints (disaster on
> a voltage regulator!)
> -Roman
>

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