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:
May. 25, 2004
Filed:
Mar. 08, 2002
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Since the exposed collector part of one semiconductor switching element is attached to the heat radiating fin by coating and filling a thermal conducting filler therebetween via spacers and and the exposed collector part of another semiconductor switching element is directly attached to the same heat radiating fin by coating the thermal conducting filler thereto without any spacer, heat resulting from switching losses can be effectively transmitted to the heat radiating fin and can be radiated therefrom. To effectively transmit heat, which results from switching losses, to a heat radiating fin and to radiate the same even if two semiconductor switching elements are connected in series, a collector part is exposed on the rear side thereof, and the two semiconductor switching elements are attached to a single heat radiating fin.