The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1981
Filed:
Feb. 12, 1979
Masahiro Yamane, Itami, JP;
Toshimi Watanabe, Itami, JP;
Keiji Itoga, Itami, JP;
Kiyoshi Ishibashi, Itami, JP;
Yutaka Morita, Itami, JP;
Isamu Yamamoto, Itami, JP;
Kiyoji Imanaka, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a plastic encapsulated semiconductor device which comprises a connected metal plate having a plurality of semiconductor element holding parts which are connected in series in one direction with at least two connecting arms, said connecting arms having sectional area smaller than that of said semiconductor element holding part and being disposed inside of the side surface of said semiconductor element holding parts in the connecting direction. The invention provides a method of preparing semiconductor devices having relatively large current capacity of about 5 to 50 amperes used as diodes for automobiles and having high quality in the mass production.