Panasonic Intellectual Property Management Co., Ltd.

Norihiko Ogata

Masayuki Hogiri

Yukiyasu Sugihara

Kazuhide Gotou

Yuma Yano

Yuki Ueda

Akinari Kurokawa

Takeshi Minamiura

Masahiro Ueda

Kazuhito Odane

An electrolytic capacitor includes a capacitor element that includes a porous anode body including an anode base body and a dielectric layer formed on a surface of the anode base body, and a solid electrolyte layer that covers at least a part of the dielectric layer. The anode body includes a plurality of principal surfaces, and at least a part of a surface layer of at least one principal surface of the plurality of principal surfaces of the anode body is denser than an inside of the anode body.

Electrolytic capacitor including an anode body having non-uniform density

An electrolytic capacitor including: a capacitor element including an anode section and a cathode section; an anode lead terminal electrically connected to the anode section; a cathode lead terminal electrically connected to the cathode section; and an outer package covering the capacitor element, wherein the anode section includes an anode body, and an anode wire extending outwardly from an implantation face of the anode body, the outer package has a first face opposing the implantation face, and a second face and a third face sharing one side with the first face and opposing each other, an area of the second face is larger than an area of the third face, an angle θformed between the first and second face is less than 90 degrees, and the first face includes a protruding portion located on an extension of the anode wire, and protruding to an outside of the outer package.

Electrolytic capacitor and method for producing the same

An electrolytic capacitor includes an anode body having a porous structure, an anode lead having a sheet shape, a cathode layer, an anode lead frame electrically connected to the anode lead, and a cathode lead frame electrically connected to the cathode layer. The anode lead includes an embedded portion embedded in the anode body and a protrusion portion protruding to an outside of the anode body. The anode lead has a first main surface facing the cathode lead frame and a second main surface opposite to the first main surface. The anode lead is located between a center of the anode body and an end face of the anode body in a first direction in which the first main surface faces the cathode lead frame. The end face of the anode body is positioned at a side close to the cathode lead frame.

Electrolytic capacitor having reduced equivalent series resistance

An electrolytic capacitor including a capacitor element that includes an anode body being porous, a dielectric layer formed on the surface of the anode body, and a solid electrolyte layer covering at least part of the dielectric layer. The anode body has a plurality of principal surfaces and a corner portion. The corner portion includes a plurality of side portions connecting between the principal surfaces, and one or more vertex portions connecting between the principal surfaces. A surface layer X of at least part of the corner portion is more compact in texture than a surface layer Y of the principal surface adjacent to the surface layer X.

Electrolytic capacitor and method for manufacturing same

An electrolytic capacitor includes an anode body having a porous structure, an anode lead partially embedded in the anode body, a dielectric layer formed on a surface of the anode body, and a cathode part that covers at least part of the dielectric layer. The anode body has a first region in which first particles sintered together and a second region in which second particles sintered together. The average particle diameter D1 of the first particles is smaller than the average particle diameter D2 of the second particles. The volume-based pore diameter distribution of the anode body with the dielectric layer has a first peak in a range of less than or equal to 0.5 &#x3bc;m in pore diameter, and a second peak in a range of more than 0.5 &#x3bc;m in pore diameter.

An electrolytic capacitor includes a capacitor element, an anode lead terminal, a cathode lead terminal, and a resin outer package. The capacitor element includes an anode part and a cathode part. The anode lead terminal is electrically connected to the anode part. The cathode lead terminal is electrically connected to the cathode part, and has a first main surface and a second main surface opposite to the first main surface. The resin outer package covers the capacitor element. The cathode lead terminal includes a joint part to be joined with the cathode part. The joint part has a recess on the first main surface. In at least one cross-section cutting the recess an being perpendicular to the first main surface, a relation D&#x3c;Dis satisfied, where Drepresents an opening width of a first opening at the first main surface of the recess, and Drepresents a maximum width of the recess inside the recess.

Electrolytic capacitor

A solid electrolytic capacitor includes a porous sintered body, a metal lead, a dielectric layer, a solid electrolyte layer, a first terminal, and a second terminal. The porous sintered body has a pair of main faces opposed to each other, a pair of side faces opposed to each other, and a pair of end faces opposed to each other. The metal lead is extended from one of the pair of main faces. The first terminal includes a first terminal mounting part extending in substantially parallel to each of the pair of side faces, and a pair of arm parts extending in substantially parallel to each of the pair of end faces. The pair of arm parts are opposed to each other. The second terminal includes a terminal connecting part electrically connected to the solid electrolyte layer. The metal lead is electrically connected to each of the pair of arm parts.

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Saga, Japan

Norihiko Ogata