Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Kazuo Kawahito

Junichi Kurita

Takashi Iwakiri

Tsuyoshi Yoshino

Kenji Kuranuki

Masatoshi Tasei

Masato Ozawa

Emiko Igaki

Chiharu Hayashi

Hiroshi Higashitani

Katsuhisa Ishizaki

Katsuyuki Nakamura

Hisataka Kato

Yoshiki Hashimoto

Kazuaki Aoyama

Hideto Yamaguchi

Minoru Omori

Yasunobu Tsuji

Hiroshi Shimada

Youichi Aoshima

Hiroshi Serikawa

Yoshiro Maruhashi

Mitsuo Terada

Minoru Oomori

Takahiro Jodoi

Hirotoshi Toji

An electrolytic capacitor includes a multilayered-capacitor-elements unit, a pair of positive electrode terminals, a negative electrode terminal, and an outer-package resin. The multilayered-capacitor-elements unit includes multiple capacitor elements of which positive electrodes are oriented oppositely to each other. The positive electrodes are connected to the positive electrode terminals, respectively, and negative electrodes of the capacitor elements are connected to the negative electrode terminal. Each of the positive electrode terminals includes a bottom section and a double-back section on which the positive electrodes of the capacitor element is disposed. The double-back section is formed by doubling over an end section extending toward the negative electrode.

Electrolytic capacitor

A solid electrolytic capacitor includes a capacitor element including a cathode portion and an anode portion, a cathode terminal bonded to the cathode portion, an anode terminal bonded to the anode portion, and an enclosure resin covering the capacitor element. The cathode terminal includes a cathode lower surface portion, a cathode connection portion, and a cathode support portion. The cathode connection portion is connected to an end portion of the cathode lower surface portion on an anode side and bonded to the cathode portion through a conductive adhesive. The cathode support portion is connected to a side portion of the cathode lower surface and brought into contact with a lower surface of the cathode portion on an end portion side of the cathode portion without involving the conductive adhesive therebetween.

Solid electrolytic capacitor

A capacitor inspection device includes a substrate made of an insulating material, a first conductor unit and a second conductor unit arranged on the substrate, a signal input unit and a signal output unit attached to the substrate, a network analyzer and a pressurizing unit. The network analyzer has an input port connected to the signal input unit and an output port connected to the signal output unit. The first and second conductor units make contact with an anode and a cathode of a capacitor, respectively. The pressurizing unit presses the anode of capacitor onto the first conductor unit and the cathode onto the second conductor unit.

Solid electrolytic capacitor inspection device and inspection method

Cathode electrode partof flat plate-like elementis joined with cathode com terminalwith a conductive adhesive or the like. Element mounting partof anode terminalis provided with a pair of joint partsfor wrapping anode electrode partfrom both sides. The tips of joint partsand anode electrode partare joined by laser welding such that the ratio (w/d) of the width (w) of each tip of joint partsand the diameter (d) of the welding trace to be welded is 0.5 to 1.5, and more preferably, 0.5 to 1.25 for providing low ESR means for concentrating the quantity of heat at the time of welding on welding partswithout escape. Therefore, a stable welded state is obtained, so that the ESR is improved for achieving low ESR of the solid capacitor.

A solid electrolytic capacitor includes a negative terminal, first to fourth capacitor elements coupled to the negative terminal, first and second positive terminals connected to the first to fourth capacitor elements, and a package resin covering the first to fourth capacitor elements. Each of the first to fourth capacitor elements has a first end and a second end opposite to the first end, and each of the first to fourth capacitor elements includes a negative electrode provided at the first end and a positive electrode provided at the second end. The first to fourth capacitor elements are stacked in this order. The positive electrodes of the first and fourth capacitor elements extend in a first direction from the respective negative electrodes of the first and fourth capacitor elements. The positive electrodes of the second and third capacitor elements extend in a second direction, opposite to the first direction, from the respective negative electrodes of the second and third capacitor elements. This solid electrolytic capacitor has a small leakage current.

A solid electrolytic capacitor includes a capacitor element, an anode terminal, a cathode terminal, and an outer casing resin. The anode and cathode terminals constitute parts of the mounting surface, and are drawn immediately below the capacitor element. The anode terminal and the cathode terminal are electrically coupled with an anode leader of the capacitor element and a cathode layer, respectively. The outer casing resin covers the capacitor element, and exposes the anode and cathode terminals on the mounting surface. At least one recess is provided on a mounting surface side of at least one of the anode and cathode terminals having a larger area projected onto the mounting surface.

Solid electrolytic capacitor with an improved mounting property, and manufacturing method of the same

A solid electrolytic capacitor includes a planar solid electrolytic capacitor element having anode and cathode portions; anode and cathode terminals; and insulating coating resin. The anode terminal is electrically connected at the top surface thereof to the anode portion. The cathode terminal is electrically connected at the top surface side thereof to the cathode portion. The coating resin integrally coats the capacitor element so as to expose the bottom surfaces of the anode and cathode terminals. The anode and cathode terminals are disposed as close to each other as not more than 3 mm. The anode and cathode terminals have stair steps on both sides thereof and are connected to the anode and cathode portions at joint faces, respectively. The anode joint faces and the cathode joint faces are coated with coating resin. The solid electrolytic capacitor is provided with the anode joint faces and/or the cathode joint faces.

Solid-electrolyte capacitor, manufacturing method thereof, and digital signal processing substrate using the solid-electrolyte capacitor

A device measures an impedance of an electronic component with using an impedance measuring apparatus. The impedance measuring device includes first and second probes to be connected to measuring terminals of the impedance measuring apparatus, an anisotropic conductive sheet, and a pressing member for pressing the electronic component toward the first and second probes. The first probe has a first contact surface. The second probe has a second contact surface flush with the first contact surface. The anisotropic conductive sheet has a first surface contacting the first and second contact surface, and a second surface opposite to the first surface. The pressing member causes first and second external terminals of the electronic component to contact the anisotropic conductive sheet. The conductive sheet includes an insulating elastic sheet and plural conductive wires penetrating the elastic sheet to expose from the first surface and the second surface. The conductive wires electrically connect the first and second external terminals to the first and second contact surfaces, respectively.

Device for measuring impedance of electronic component

A solid electrolytic capacitor includes an anode element made of a valve action metal, a dielectric oxide film formed on a surface of the anode element, a solid electrolytic layer formed on a surface of the dielectric oxide film, and a cathode layer formed on a surface of the solid electrolytic layer. The solid electrolytic layer has an iron concentration not greater than 100 ppm. Alternatively or in combination therewith, a weight fraction of residues in the solid electrolytic layer is smaller than 5 wt %. The polymerization residue is an oxidizing agent and a monomer that is produced when such solid electrolytic layer is formed.

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Osaka, Japan

Kazuo Kawahito