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Dielectric Goop - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

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wtbap22
 Post subject: Dielectric Goop
Posted: Thu Dec 24, 2009 10:50 am 
 
Lieutenant

Joined: Thu Dec 24, 2009 10:34 am
Posts: 1
I have been quite happy using RTV (as a dielectric) to tune and align filters/circuits for some time now. My company has informed me that I can no longer use this substance because it has undesirable side-effects when used in a hybrid construction environment (this is due to the silicone content).

Does anyone know of an alternate high dielectric substance that is Silicone free?

Thank you in advance-
wtbap22


 
   
 
nubbage
 Post subject: Re: Dielectric Goop
Posted: Thu Jan 21, 2010 5:52 am 
 
General
User avatar

Joined: Fri Feb 17, 2006 12:07 pm
Posts: 218
Location: London UK
Hi
there are some fluid cement goop type products that are high in polystyrene. These are sold for example to model-making freaks like Kirt and me.
The plastic blob when set should have a low loss permittivity around 2.2

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