Panasonic Intellectual Property Management Co., Ltd.

Masamichi Inoue

Makoto Nagashima

Katsuhisa Ishizaki

Hitoshi Fukui

Daisuke Usa

Syusaku Koie

Hiromi Ozawa

A solid electrolytic capacitordisclosed herein includes: a plurality of capacitor elementsstacked on top of each other, each capacitor element having an anode portionand a cathode portion; an anode lead terminalelectrically connected to at least one of the anode portions; and three or more joining portionsjoining and electrically connecting the stacked anode portionstogether. The stacked anode portionshave a first surfaceand a second surfacethat are located outermost on one side and the other side, respectively, in the stacking direction. The three or more joining portionsinclude a first joining portionhaving a first area on the first surfaceand a second joining portionhaving a second area smaller than the first area on the first surface. Thus, variation in ESR can be reduced.

Solid electrolytic capacitor capable of reducing ESR variation and method for manufacturing the same

A capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, a cathode lead-out layer covering at least a part of the solid electrolyte layer, and an insulating member disposed from an outermost surface of the cathode lead-out layer to a depth of more than or equal to 0.001 μm.

Capacitor element, electrolytic capacitor, insulating material, and method for manufacturing mounting substrate

A capacitor element includes an anode body including a porous region located at a surface of the anode body, a dielectric layer that covers at least a part of the anode body, and a cathode layer that covers at least a part of the dielectric layer. The anode body includes an anode part and a cathode formation part on which the cathode layer is disposed, the cathode formation part being adjacent to the anode part. At least a part of the porous region of the anode part includes a thin-thickness region that is thinner than the porous region in the cathode formation part, and a metal substrate is stacked on at least a part of the thin-thickness region. The metal substrate is denser than the porous region in the cathode formation part.

Capacitor element, electrolytic capacitor, and methods for manufacturing same

An electrolytic capacitor includes a capacitor element having: an anode; a dielectric layer covering at least a part of the anode body; a solid electrolyte layer covering at least a part of the dielectric layer; and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The cathode lead-out layer includes a carbon layer covering at least a part of the solid electrolyte layer, a first metal layer covering at least a part of the carbon layer, and a second metal layer covering at least a part of the first metal layer. The first metal layer contains first metal particle, and the second metal layer contains second metal particles and a second binder resin. The first metal layer contains no binder resin, or contains a first binder resin in a volume ratio smaller than a volume ratio of the second binder resin contained in the second metal layer.

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Osaka, Japan

Masamichi Inoue