[Scott Dorsey]

Arny Krueger wrote:

Jim, there's something about the cap test you recommended being irrelevant
to your changed story. If the question is polystyrene sounds compared to
DMD, why did you say compare to ceramic?

I don't know Jim's application, but on a microphone input stage, your
choices are polystyrene, ceramic, or glass. DMD and the like have WAY
too much leakage in a 10G circuit.

I'll claim that glass beats either polystyrene or COG ceramics, and there IS
some possibility of there being surface mount glass from AVX soon. Not yet,
though.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Arny Krueger]

"Scott Dorsey" wrote in message
...
Arny Krueger wrote:

Jim, there's something about the cap test you recommended being irrelevant
to your changed story. If the question is polystyrene sounds compared to
DMD, why did you say compare to ceramic?

I don't know Jim's application,

And Jim didn't specify which one. My presumption is that the caps in
question would be in buffer amp.

but on a microphone input stage, your
choices are polystyrene, ceramic, or glass. DMD and the like have WAY
too much leakage in a 10G circuit.

That's a tiny minority of all of the caps in a mic. Often there are no caps
at all in that end of things, other than the mic capsule itself.

I'll claim that glass beats either polystyrene or COG ceramics, and there
IS
some possibility of there being surface mount glass from AVX soon. Not
yet,
though.

Good when it happens!