[sdiy] cap question

[David G. Dixon]

NP0/C0G ceramics typically go up to 2.2nF, which is plenty big for most
filter stuff.

What about polypropylene in place of polystyrene for S/H applications?  Here
is a very interesting link comparing the leakage properties of the two:

http://electronicdesign.com/Articles/ArticleID/15116/15116.html



> NPO/COG caps are very good but they are hard to get in larger
> values. That is where the polystyrenes are better.
> 
> I'm not sure about S/H performance... but you usually need
> larger values anyway.