Solid electrolyte capacitor
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United States of America Patent
Stats
-
Apr 18, 2000
Grant Date -
N/A
app pub date -
Apr 14, 1998
filing date -
Apr 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solid electrolyte capacitor has a metal case 3 housing a capacitor element 1 and closed by a hermetic seal structure. More specifically, the case 3 has an opening closed with a seal plate 4 of nickel alloy. The capacitor element 1 has a pair of lead wires 15, 15 which are joined at their outer end faces respectively to lower end faces of a pair of lead pins 2, 2 by resistance welding. The lead pins 2, 2 are inserted through holes 41, 41 in the seal plate 4, with an insulating glass seal 5 filled in a clearance in each of the holes 41, 41 around the lead pin 2. The opening-defining edge of the case 3 and the outer peripheral edge of the seal plate 4 are joined to each other by resistance welding. Consequently, the capacitor retains high reliability over a prolonged period of time.
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