Solid electrolytic capacitor and method for manufacturing same

Details Solid electrolytic capacitor and method for manufacturing same Solid electrolytic capacitor and method for manufacturing same

2008-03-25

2008-03-25

Thomas, Eric (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C029S025030

Reexamination Certificate

active

10542303

ABSTRACT:
A solid electrolytic capacitor having less occurrence of leakage current and a fabrication method therefor. In a solid electrolytic capacitor, a dielectric layer of niobium oxide having high electrical insulation whose major component is niobium or oxygen, an electrolyte layer and a cathode are formed in the order on an anode formed of niobium or niobium alloy, the dielectric layer is composed of a first dielectric layer containing fluorine formed on the anode and a second dielectric layer containing phosphorus or sulfur formed on the first dielectric layer and fluorine concentration in the first dielectric layer is decreased from the anode side toward the second dielectric layer.

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Notification of Reasons for Refusal issued for Japanese application No. 2004-289282, with English translation.

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