[sdiy] Newbie capacitor questions 2 - Return of the Cap.

[harrybissell]

NPO caps are most common in small values... but they CAN be found be found
in LARGE(r) values.   I have some reels of a .039uF NPO.  Physical size is very
large (as ceramics go).

These were 'liberated' on their way to a landfill.  The use was in an engine
control
module for under hood applications.  The other cap choices would possibly have
been
less mechanically stable, and would not have sufficient temperature extreme
rating

H^) harry

Ian Fritz wrote:

> At 04:24 PM 1/8/2005, Paul Perry wrote:
>
> >But.. why not use ceramic NPO caps? they are actually guaranteed to have low
> >temp
> >coefficient (that is what the NPO means) plus, they are cheap & available.
>
> Ceramic has a significant soakage effect, as someone pointed out here
> previously.  They seem to work pretty well, anyway, though.