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:
Mar. 28, 2006
Filed:
Aug. 09, 2001
Yoshiyuki Nagatomo, Gotenba, JP;
Toshiyuki Nagase, Gotenba, JP;
Shoichi Shimamura, Gotenba, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
The present invention relates to a power module in which an insulated circuit board is fixed to one main surface of a heat discharge plate. It is an object thereof to provide a power module in which the heat discharge characteristics are improved without any marked warping being generated, and that has an extended heat cycle longevity. In the power moduleof the present invention, a square insulated circuit boardis fixed to one main surface of a heat discharge plate. The heat discharge plateis formed of an Al based alloy plate having a thickness A of 3 to 10 mm, and the insulated circuit boardhaving a side B of 30 mm or less in length is brazed directly onto the heat discharge plate. It is-preferable that the brazing material used is one or two or more brazing materials selected from Al—Si, Al—Ge, Al—Cu, Al—Mg, and Al—Mn based brazing materials. It is also preferable that the insulated circuit boardis formed by a ceramic substrateand Al platesandthat are bonded to both surfaces thereof, and that the Al platehas a purity of 99.98 or greater percent by weight.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile