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Dielectric Goop - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 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


 
   
 
 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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