[Amps] LDMOS HEAT SPREADERS

[John Lyles]

I wonder if a high power transistor could mount on a chill block sold 
for puck type very high power devices. For instance,

http://catalog.chtechnology.com/viewitems/extruded-bonded-fin-heat-sinks/liquid-chill-block?&plpver=10&forward=1


Of course, getting the RF into and out off the device with this cooler 
in the way is tricky.
John
K5PRO



> Date: Mon, 22 Aug 2016 07:44:16 +0100
> From: Steve Thompson <g8gsq72 at gmail.com>
>
> With water cooling, why not sit the transistor over a pocket and
> run the coolant directly against the flange? That's a method I saw
> in production test at the Philips (as it was) factory.
>
> NEC had an ill fated TV broadcast tx which cooled the transistors
> with compressed air blown directly onto the flange. In terms of
> cooling I was told it worked just fine, the problem came when the
> nozzles blocked with dust.
>
> Steve