(19)

(11)

EP 1 690 286 A2

(12)

(43) Date of publication: 16.08.2006 Bulletin 2006/33 (21) Application number: 04817951.9 (22) Date of filing: 06.12.2004

(51) International Patent Classification (IPC):  H01L 21/00(2006.01) (86) International application number: PCT/US2004/040599 (87) International publication number: WO 2005/057623 (23.06.2005 Gazette 2005/25)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR LV MK YU (30) Priority: 05.12.2003 US 527631 P (71) Applicant: INTERNATIONAL RECTIFIER CORPORATION El Segundo, CA 90245 (US)	(72) Inventor: BEACH, Robert Altadena, California 91001 (US) (74) Representative: Kopf, Korbinian Paul  Maiwald Patentanwalts GmbH Elisenhof Elisenstrasse 3 D-80335 München D-80335 München (DE)