US Patent 7583486 Semiconductor device having protection diode

Patent 7583486 was granted and assigned to Denso on September, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Denso

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75834860

Date of Patent

September 1, 2009

Patent Application Number

118022790

Date Filed

May 22, 2007

Patent Primary Examiner

‌

Danny Nguyen

Patent abstract

A semiconductor device includes: a semiconductor element; a protection diode for protecting the semiconductor element from a first reverse voltage applied to the semiconductor element; and a capacitor. The protection diode is coupled in parallel to the semiconductor element. The protection diode has a forward direction, which is equal to a first applying direction of the first reverse voltage. The capacitor is coupled in parallel to the protection diode. The capacitor is capable of absorbing a second reverse voltage applied to the protection diode. The second reverse voltage is larger than a breakdown voltage of the protection diode, and has a second applying direction opposite to the first applying direction.