Solid electrolytic capacitor

Details Solid electrolytic capacitor Solid electrolytic capacitor

1989-12-06

1991-04-02

Griffin, Donald A.

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

H01G 900

Patent

active

050051075

ABSTRACT:
A solid electrolytic capacitor of this invention comprises an electrode provided with an anode lead; a dielectric oxide film, a solid electrolyte layer, a carbon layer, and a cathode layer, which are successively formed on the surface of the electrode; a positive terminal connected to the anode lead; and a negative terminal connected to the cathode layer by means of an electrically conductive adhesive; wherein at least one of the cathode layer and the electrically conductive adhesive comprises a polymer and an electrically conductive powder containing palladium. The capacitor displays little variation in the value of tan .delta. and slight changes in current leakage even when the capacitor is placed under conditions of high temperature and humidity. Moreover, electrical short-circuit failure of the capacitor rarely occurs.

REFERENCES:
patent: 4166286 (1979-08-01), Boissonnault
patent: 4184192 (1980-01-01), Yoshida et al.
patent: 4408257 (1983-10-01), Walters
patent: 4758929 (1988-07-01), Naitoh et al.
patent: 4763228 (1988-08-01), Su

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