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Patent Searching and Data


Title:
ELECTROLYTIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2021/066090
Kind Code:
A1
Abstract:
An electrolytic capacitor (1) of the present invention is provided with: a cuboidal resin mold (9) comprising a stack (30) and a sealing resin (8) sealing a periphery of the stack (30), the stack (30) comprising a capacitor element (20) including an anode (3) having a dielectric layer (5) on a surface thereof and a cathode (7) opposing the anode (3); a first external electrode (11) formed on a first end surface (9a) of the resin mold (9) and electrically connected to the anode (3), which is exposed from the first end surface (9a); and a second external electrode (13) formed on a second end surface (9b) of the resin mold (9) and electrically connected to the cathode (7), which is exposed from the second end surface (9b). The electrolytic capacitor (1) is characterized in that: at least one of the first external electrode (11) and the second external electrode (12) has a multilayer structure comprising an inner-layer plating layer (11a, 13a) formed on a surface of the anode (3) exposed from the first end surface (9a) or on a surface of the cathode (7) exposed from the second end surface (9b), and a resin electrode layer (11b, 13b) formed on a surface of the inner-layer plating layer (11a, 13a) and comprising one or more metals selected from the group consisting of Ni, Cu, and Ag and a resin component; and the total number of layers of which each of the first external electrode (11) and the second external electrode (13) is composed is not more than four.

Inventors:
ARITOMI KATSUTOMO (JP)
ONISHI WATARU (JP)
Application Number:
PCT/JP2020/037410
Publication Date:
April 08, 2021
Filing Date:
October 01, 2020
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01G4/30; H01G9/012; H01G9/048; H01G9/08; H01G9/15
Domestic Patent References:
WO2019065870A12019-04-04
WO2018105364A12018-06-14
Foreign References:
JP2014120382A2014-06-30
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
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