US 12,744,164 B2 · Electrolytic capacitor

Abstract

An electrolytic capacitor includes; an anode body including a porous body, a dielectric layer; and a solid electrolyte layer that fills in pores of the porous body. A filling rate R of the solid electrolyte layer in the porous body decreases from an outer surface toward the center. A shortest distance D from an outer surface to the center, and a distance X50 from the outer surface of the porous body when the filling rate R is 50% satisfy a specific relationship. When CV value of the porous body is less than 100,000 μF·V/g, 0.1 D≤X50<0.7 D is satisfied. When CV value of the porous body is 100,000 μF·V/g or more and less than 150,000 μF·V/g, 0.05 D≤X50<0.3 D is satisfied. When CV value of the porous body is 150,000 μF·V/g or more, 0.03 D≤X50<0.2 D is satisfied.

Claims12

Dependent claims

An electrolytic capacitor comprising:

an anode body including a porous body containing a valve metal, and a dielectric layer that covers the porous body;
and
a solid electrolyte layer that is filled in pores of the porous body and covers the dielectric layer, wherein
a CV value of the porous body is less than 100,000 μF·V/g,
a filling rate R of the solid electrolyte layer in the porous body decreases from an outer surface toward a center of the porous body, and
a shortest distance D from the outer surface to the center of the porous body, and a distance X from the outer surface of the porous body when the filling rate R of the solid electrolyte layer is 50% satisfy a relationship of 0.1 D≤X<0.7 D.

3 more elements

Dependencies are inferred from the claim text.

Electrolytic capacitor

Life of this patent

Electrolytic capacitor

Life of this patent

Abstract

Claims12