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Re: Tek 603 - question on transistor heatsinking material


 

On 2020-07-02 1:29 a.m., John Gord via groups.io wrote:
Toby,
It looks like the part number is 342-0082-00, described as an insulator plate, 0.52" x 0.52" x 0.015", material: alumina (aluminum oxide).
It is likely used with thermal compound added,
Unless Walter at Sphere has the alumina, I might have to go with mica --
Digikey has some reasonably compatible rectangular pieces.



Thanks a lot, John. It was lazy of me not to consult the parts list
before posting...

--Toby


--John Gord

On Wed, Jul 1, 2020 at 08:52 PM, <toby@...> wrote:


Hi,

In preparation for testing/replacing components on the HV & regulator
board, I removed it, and seem to have accidentally broken one of the
heatsink pads under a bottom transistor (see pic).

What is this material?
/g/TekScopes/photo/249616/0?p=Created,,,20,2,0,0

Should it be used with thermal paste or not?

Thanks
--Toby

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