[sdiy] Replacing an obsolete FKC Capacitor

[ChristianH]

Hi,

if it's the frequency determining cap, you can't go wrong with a
styroflex. Pretty stable.
If it's some other cap within the oscillator, it most probably won't
matter which type it is.

Tight tolerance is nice to have, but you will have to tune the VCO
anyway. Stability is more important than an exact absolute capacitance
value.

Chris

P.S.: if you never used styroflexes - quick soldering is recommended,
and never touch the cap *body* with the soldering iron, it melts pretty
fast.



On Tue, 11 Mar 2008 17:20:50 -0700 (PDT) Stavros Gregoriou
<stavrosgrigoriou at yahoo.com> wrote:

> Hello, Your Help Please,
> 
> Is a "glimmer capacitor" (2% tolerance) a good
> replacement for an obsolete FKC (WIMA)capacitor (5%
> tolerance) used in a VCO module?. 
> The value I am looking for is 820pF. 
> Another capacitor I have found available in this value
> is a styroflex. 
> Is there another alernative?
> Which one would you recomend as a best choise? 
> 
> Many thanks in advance for your help.
> 
> Stavros G