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. 20, 2001
Filed:
Jul. 15, 1997
Peter R. Ewer, Surrey, GB;
Arthur Woodworth, Surrey, GB;
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A surface mount semiconductor package includes washing grooves disposed on a bottom surface of a plastic housing. The package also employs locking elements for locking the plastic housing to a metal pad on which a semiconductor device is mounted, where the locking elements include a cross bar between terminals, slots disposed on the metal pad which include barbs and dove-tail grooves disposed on the metal pad. The metal pad includes a waffled surface for improved coupling to a substrate. The package includes terminals having offset portions for providing spaces for the plastic housing material to fill for improved encapsulation of the terminals. The metal pad extends beyond the lateral edges of the plastic housing for improved heat dissipation and for providing a surface to couple to a heatsink.