Small glass capacitors polarized?

[Paul Koning]

> On Sep 28, 2015, at 1:36 PM, Shoppa, Tim <tshoppa at wmata.com> wrote:
> ...
> There are real glass capacitors used where zero leakage and zero soakage are uber-concerns.

There's no such thing as zero leakage, since all insulators have finite resistance.  Glass is a pretty good insulator, but in fact not the best -- fused quartz or amber are traditional better options where very low leakage is required, and a table in Wikipedia indicates that teflon is better still. 

	paul