Matsushita Electric Industrial Co., Ltd.

Morihiro Fukuda

Terumi Fujiyama

Yoshio Hashimoto

Kazuo Fukunaga

Yoshiaki Kuwada

Hiromasa Mori

Tsuyoshi Yoshino

Toshiyuki Hata

Kazuya Kawahara

Yoshiki Hashimoto

Mitsuo Tadokoro

Ichirou Yamashita

Yoshihito Suizu

Ryuji Nakamura

Sunao Matsunaga

Takeshi Shoji

Yasushi Kurasaki

A sheet capacitor of the invention has a contact portion formed in a through-hole requiring electrical connection with an IC connection pin among the through-holes in which the IC connection pins are inserted, and a capacitor element connected to the contact portion. Another sheet capacitor of the invention includes an insulating board and a capacitor element mounted on the insulating board. The insulating board has a connection land with an IC at the upper side, and a connection land with a printed wiring board at the lower side. The capacitor element and connection lands at the upper and lower side of the insulating board are connected with each other electrically. In any one of these configurations, a capacitor element of large capacity and low ESL is connected closely to the IC, and the mounting area of the peripheral circuits of the IC can be increased.

Sheet capacitor, IC socket using the same, and manufacturing method of sheet capacitor

Disclosed is an aluminum electrolytic capacitor, wherein each of anode and cathode foils is joined to a corresponding portion of a leader line through at least two caulked joint sections formed at each of the opposite ends of the flat portion, and a plurality of pressure-welded joint sections formed between the respective caulked joint sections at the opposite ends. The chaulked joint sections formed at each of the opposite ends of the portion provide a high joint strength. Further, the pressure-welded joint sections formed between the respective caulked-join sections at the opposite ends of the portion allow an electrical connection between the foil and the leader line to be stably obtained at a low resistance. This joint structure can, therefore, be applied to small-size capacitors which have not been able to be obtained by using only caulked joint, to achieve an aluminum electrolytic capacitor having a sufficient joint strength and a highly reliable electrical connection.

Capacitor

An aluminum electrolytic chip capacitor having excellent resistance against vibrations is disclosed. The capacitor is free from breakage of soldered portions or lead wires due to the vibrations upon being mounted on a board. The capacitor includes a metal case accommodating a capacitor element and having its open end sealed with a sealing member, and an insulated terminal plate mounted on the case. The case is provided with an annular shrink portion at the sealing of the open end. The terminal plate includes wall portions disposed at positions other than on a line of the lead wire bending direction of the periphery of the terminal plate. The wall portions cover at least the shrink portion. Inner surfaces of the wall portions abut the periphery of the case, thereby holding the case.

Chip capacitor

A method for producing aluminum electrolytic capacitors by inserting a pair of lead wires extended from an end surface of a capacitor body into through holes provided in an insulation board, by bending the pair of lead wires to fit uniformly in the grooves formed on the bottom surface of the insulation board, and by cutting projected portions of the pair of lead wires projecting from the brim face of the insulation board.

Method for producing aluminum electrolytic capacitor

Growing community of inventors

Yamaguchi, Japan

Morihiro Fukuda