Solid electrolytic capacitor and manufacturing method thereof

Details Solid electrolytic capacitor and manufacturing method thereof Solid electrolytic capacitor and manufacturing method thereof

2006-05-02

2006-05-02

Thomas, Eric W. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C361S532000

Reexamination Certificate

active

07038903

ABSTRACT:
A solid electrolytic capacitor has an anode composed of a niobium substrate and a niobium nitride layer, and a dielectric layer composed of niobium oxide is formed on the surface of the niobium nitride layer. In the solid electrolytic capacitor, the nitrogen content based on the total weight of the niobium substrate, the niobium nitride layer, and the dielectric layer is preferably not less than 0.001% by weight nor more than 0.2% by weight. In another solid electrolytic capacitor, an anode is formed by sintering thermally treated niobium powder in a nitrogen atmosphere. A dielectric layer composed of niobium oxide is formed on the surface of the anode. In the solid electrolytic capacitor, the composition ratio X of the niobium powder (NbNX) is preferably not less than 0.05 nor more than 1.0.

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patent: 6529367 (2003-03-01), Naito et al.
patent: 2005/0024810 (2005-02-01), Yuan
patent: 3-132011 (1991-06-01), None
patent: 11-329902 (1999-11-01), None
patent: WO 00/46819 (2000-08-01), None
patent: WO 02/15208 (2002-02-01), None

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