US Patent 7964492 Semiconductor device and automotive AC generator

Patent 7964492 was granted and assigned to Hitachi on June, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Hitachi

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7964492

Date of Patent

June 21, 2011

Patent Application Number

12232676

Date Filed

September 22, 2008

Patent Primary Examiner

‌

Nitin Parekh

Patent abstract

A semiconductor device includes a semiconductor element, a support member bonded to a first surface of the semiconductor element with a first bonding material and a lead electrode bonded to a second surface of the semiconductor element supported on the support member with a second bonding material, and further including a method of producing the semiconductor device. Respective connecting parts of the support member and the lead electrode are Ni-plated and each of the first and the second bonding material is a Sn solder having a Cu6Sn5 content greater than a eutectic content.