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:
Jul. 20, 2004
Filed:
Mar. 05, 2003
Toshiaki Shinohara, Fukuoka, JP;
Takanobu Yoshida, Fukuoka, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A discrete semiconductor device is vertically sandwiched between an upper wall of a case body and a case bottom plate to be fixed inside a case. The discrete semiconductor device is fitted in the case to be positioned on a predetermined portion inside the case with high accuracy. A space defined by a side surface of the discrete semiconductor device and an inner wall of the case forms a duct for a coolant used for cooling the discrete semiconductor device. The discrete semiconductor device, except main electrodes and signal terminals, is immersed in the coolant. With this structure provided is a power semiconductor device which allows an increase in radiating efficiency of a power semiconductor element and reduction in manufacturing cost.