ULTEM cap dielectric

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Original poster: "Harold Weiss by way of Terry Fritz <twftesla-at-qwest-dot-net>" <hweiss-at-new.rr-dot-com>

Hello all,

In the Handbook of Chemistry and Physics, I found a chart on breakdown 
voltages for various materials.  Ultem had a breakdown voltage of 
400-500KV/mm, second place went to Kapton at about 375-450KV/mm. This is 
from memory, so the ranges may be a little off, but they were in the 
vicinity that I list.  Ultem is a GE plastic.  GE does make a film listed 
as ULTEM 1000.  I do not have all the details yet on this material.  If 
this material has low RF losses, this stuff could make excellent high 
voltage pulse caps.

David E Weiss