[sdiy] expo pair "heat shield?"

René Schmitz synth at schmitzbits.de
Tue Oct 11 15:08:55 CEST 2022


Hey Neil and all,

In principle it's not a bad idea especially if the mass and hence 
thermal inertia of your device is small.

E.g. a SMD dual transistor.


I would vote against using regular silicone, the usual RTV stuff 
evaporates Acetic Acid, aka Vinegar.  Viva la corrosión!


Hot glue or Epoxy seem good options to me. I've used both in with THT 
parts.

Mainly to mechanically couple tempco resistors to the dual transistor.

I've also used heatshrink, and a dab of thermal paste to isolate the 
KTY-81 in my VCO3s to the 2SC1583s.


Best,

  René


Am 11.10.2022 um 07:23 schrieb Neil Harper via Synth-diy:
> hey all,
>
> just wondering if anybody thinks it's worth encasing an exponential pair
> for stability. while this is in my modular case, there must be some heat
> currents moving around from the other stuff that share the same space.
>
> Maybe a dab of hot-glue-gun (hot snot), or a silicone or something?
>
> I'd hate for it to bite me in the arse in the future, maybe corroding
> the copper traces or the tin legs or becoming impossible to remove. What
> do the pros use?
>
>
> -- 
> /// Neil Harper
> /// Every Wave is New Until it Breaks
>
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