US 2019/0103230 A1 · ELECTROLYTIC CAPACITOR AND METHOD FOR MANUFACTURING SAME

Abstract

An electrolytic capacitor includes a capacitor element; a bottomed case that houses the capacitor element; a sealing member that seals an opening of the bottomed case; a tab terminal connected to the capacitor element and penetrating through the sealing member; and a resin layer that covers at least part of a main surface of the sealing member, the main surface being disposed outside the bottomed case. The tab terminal includes a first portion containing a first metal and a second portion containing a second metal. The resin layer is in contact with the first portion and the second portion. Linear expansion coefficient α1 of the first metal, linear expansion coefficient α2 of the second metal, and linear expansion coefficient αr of the resin layer satisfy a relation of α1<αr<α2 or αr<α1<α2.

Claims5

Dependent claims

An electrolytic capacitor comprising:

a capacitor element;
a bottomed case that houses the capacitor element;
a sealing member that seals an opening of the bottomed case;
a tab terminal connected to the capacitor element and penetrating through the sealing member;
and
a resin layer that covers at least part of a main surface of the sealing member, the main surface being disposed outside the bottomed case,
wherein:
the tab terminal includes a first portion containing a first metal and a second portion containing a second metal,
the resin layer is in contact with the first portion and the second portion, and
linear expansion coefficient α1 of the first metal, linear expansion coefficient α2 of the second metal, and linear expansion coefficient αr of the resin layer satisfy a relation of α1<αr<α2 or αr<α1<α2.

7 more elements

Dependencies are inferred from the claim text.

Electrolytic capacitor and method for manufacturing same

Life of this patent

Electrolytic capacitor and method for manufacturing same

Life of this patent

Abstract

Claims5