I remember reading that the use of Heat Sink Compound between
the device (LDMOS) and the Cu Heat Sink was NOT recommended.
They require an extremely flat surface on the Heat Sink. The temp's
at that junction can be quite high.
It's use between the Cu and Al Heat Sinks though is another matter.
73, Dick, W1KSZ
On Wed, Dec 11, 2013 at 6:31 PM, Gary K9GS <garyk9gs@wi.rr.com> wrote:
> Here is some good information:
>
> http://en.wikipedia.org/wiki/Thermal_grease
>
> There is a product called Arctic Silver that is very popular with
> gamers/computer users. I don't know much about it but it's widely
> available from computer parts dealers like newegg.com. Search under
> "thermal grease" or "thermal compound".
>
> For recommendations I'd look at manufacturer's website for the device
> you're using. They may have an app note.
>
> I do know that you want to apply a uniform THIN coat. More is NOT better.
> At work we use small rubber rollers to apply. Almost like a paint roller.
>
>
>
> On 12/11/2013 10:15 AM, Col. Paul E. Cater wrote:
>
>> Greeting all,
>>
>> I'm getting around to my 2 meter kilowatt SSPA. My question is which of
>> the multitude of heatsink compounds do you recommend? I have read some of
>> the comparisons mostly dealing with CPU cooling. But, would like some
>> input from piratical experience. The silver formulations seem to do a bit
>> better.
>>
>> In addition, I am assuming that I want a layer of the stuff between the
>> copper heat spreader and the heatsink?
>>
>> Paul
>> WD8OSU
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>>
>>
> --
>
>
> 73,
>
> Gary K9GS
>
> Greater Milwaukee DX Association: http://www.gmdxa.org
> Society of Midwest Contesters: http://www.w9smc.com
> CW Ops #1032 http://www.cwops.org
>
> ************************************************
>
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>
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