[Elecraft] KPA-100 Heat Sink Compound

[Vic K2VCO]

Jim Wiley wrote:

> When assembling the KPA-100, is it permissible to use standard 
> zinc-oxide filled heat sink grease and mica insulating washers in place 
> of the supplied silicon-rubber washers?  It seems to me that the grease 
> option wouldn't require re-torquing because any "flow" would happen 
> immediately when the transistors are snugged down to the heat sink. 

First of all, the transistors don't need to be insulated from the heat 
sink, so you wouldn't need the mica washers. Second, Elecraft has said 
that they do not recommend using heat sink compound because the plastic 
sheets that they use do a better job of ensuring heat transfer.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco