Film capacitor for high temperature applications
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United States of America Patent
Stats
-
Feb 3, 2004
Grant Date -
Mar 20, 2003
app pub date -
Sep 9, 2002
filing date -
Sep 7, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for extending the operating temperature limit of a polypropylene film capacitor to greater than 105.degree. C., by use of a post assembly curing process of placing the capacitor in a 10 Torr or less pressure environment, preferably less than 1 Torr, and slowing heating it at a rate of less than an average rate of 5.degree. C./hour to a peak temperature of about 10 to 20 degrees higher than the intended operating temperature, the peak temperature being not more than preferably 180.degree. C.
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