US 12,456,586 B2
Electrolytic capacitor
Kenta Sato, Osaka (JP); Toshifumi Kadokawa, Osaka (JP); Junichi Kurita, Osaka (JP); and Daisuke Kubo, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/259,790
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Jan. 25, 2022, PCT No. PCT/JP2022/002657
§ 371(c)(1), (2) Date Jun. 29, 2023,
PCT Pub. No. WO2022/163645, PCT Pub. Date Aug. 4, 2022.
Claims priority of application No. 2021-013408 (JP), filed on Jan. 29, 2021.
Prior Publication US 2024/0087817 A1, Mar. 14, 2024
Int. Cl. H01G 9/012 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/012 (2013.01) 20 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
a capacitor element that includes an anode part and a cathode part;
an exterior body that seals the capacitor element;
a first external electrode that is electrically connected to the anode part; and
a second external electrode that is electrically connected to the cathode part,
wherein:
at least one of an end face of the anode part or an end face of the cathode part is exposed from the exterior body to be electrically connected to a corresponding one of the first external electrode or the second external electrode,
the end face exposed from the exterior body is covered with an electroless Ni plating layer,
the electroless Ni plating layer is covered with an electroless Ag plating layer,
the electroless Ag plating layer is covered with the corresponding one of the first external electrode or the second external electrode, and
a thickness of the electroless Ag plating layer ranges from 0.1 μm to 1 μm, inclusive.