EXHIBIT 21




Significant Subsidiaries




The Company is including in the following list legal entities and divisional, branch office or significant office locations including, among them, all significant subsidiaries. The jurisdiction of incorporation is indicated next to each such legal entity.




World Headquarters




International Rectifier Corporation (Delaware, USA)


101 N. Sepulveda Blvd.


El Segundo, California 90245


Phone: (310) 726-8000


Fax: (310) 322-3332


Internet: www.irf.com




North American Operations




International Rectifier Corporation (Delaware, USA)


41915 Business Park Drive


Temecula, California 92590


Phone: (909) 676-7500


Fax: (909) 676-9154




Rectificadores Internacionales, S.A. de C.V. (Mexico)


Prolongacion Ave. Los Cabos No. 9234


Parque Industrial Pacifico II


C.P. 22709


Tijuana, Baja California, Mexico


Phone: (++) 52 66 26 08 04


Fax: (++) 52 66 26 01 02




International Rectifier HiRel Products LLC (Delaware, USA)


205 Crawford Street


Leominster, Massachusetts 01453


Phone: (978) 534-5776


Fax: (978) 537-4246




International Rectifier, HiRel Products, Inc.


(Delaware, USA)


2520 Junction Avenue,


San Jose, California 95134


Phone: (408) 434-5000


Fax: (408) 434-5230




IR Epi Services, Inc. (Delaware, USA)


550 West Juanita


Mesa, Arizona 85210


Phone: (480) 668-4000


Fax: (480) 464-7421







European Operations




International Rectifier Company (Great Britain) Ltd.


Omnibus Building


Reigate, Surrey,


RH2 72P, United Kingdom


Phone: (++) 44 (0) 1737227200


Fax: (++) 44 (0) `737227201




IR Newport Limited (England and Wales)


Cardiff Road


Newport, Wales


NP10 8YJ, United Kingdom


Phone: (++) 49 1633 810 121


Fax: (++) 49 1633 810 820




Branch Office—Finland


Mikkelankallio 3 FIN-02770 ESPOO


Phone: (++) 358 9 8599 155


Fax: (++) 358 9 8599 1560




Branch Office—France


Immeuble Zeta B 3 Avenue de Canada B LP8177


91974 Courtaboeuf Cedex, France


Phone: (++) 33 1 64 86 49 50


Fax: (++) 33 1 64 86 49 70




IR Denmark ApS (Denmark)


Literbuen 10 C


2740 Skovlunde, Denmark


Phone: (++) 45 45 28 06 96


Fax: (++) 45 45 28 19 96




International Rectifier GmbH (Germany)


Frankfurter Strasse 227


D-63263 Neu-Isenburg Germany


Phone: (++) 49 6102 884 400


Fax: (++) 49 6102 884 433




IR International Holdings, Inc. (Delaware, USA)


Branch Office—Moscow, Russia


Room 325 Semenovsky per. 15


Moscow, 105023, Russia


Phone: (++) 7 095 360 5735


Fax: (++) 7 095 964 9560




IR Pavia, LLC


Via Trieste 25


Pavia, 27100 Italy


Southern Zone Phone:  (++) 33 16 486 4650


Southern Zone Fax: (++)33 16 486 4970











Asian Operations





International Rectifier Japan Company, Ltd. (Japan)


Sunshine 60 Building, 51st Floor


3-1-1, Higashi-Ikebukuro


Toshima-Ku, Tokyo, 170-6051 Japan


Phone: (++) 81 3 3983 0641


Fax: (++) 81 3 3983 5956




Branch Office—Osaka, Japan


Kazu IT Bldg., 4th Floor


2-10-27 Minami-Semba


Chuo-Ku, Osaka-Shi, Osaka 542-0081


Phone: (++) 81 6 6258 7560


Fax: (++) 81 6 6258 7561




Branch Office—Nagoya, Japan


Meitetsu Kanayama Daiichi Bldg. 5F


25-1 Namiyose-cho Atsuta-ku


Nagoya-shi, Aichi 456-0003


Tel: (++)81 52 871 0570


Fax: (++)81 52 871 0576





Shanghai International Rectifier Trading, Ltd. (China)


231 Fu Te Road North


Waigaoqiao Free Trade Zone


Pudong, Shanghai, 200231, P.R. China


Phone: (++) 86 21 5866 6060


Fax: (++) 86 21 5866 1654




Shanghai International Rectifier Trading Ltd. - Xi’an Branch (China)


Building B #106,


38 GaoXin Road Hi-tech Industrial Development Zone,


Xi’an 71075, China


Tel: ++86 29 6890 2929


Fax: ++86 29 6890 2929





IR International Holdings, Inc. (Delaware, USA)


Beijing Representative Office


Canway Building, Suite 710


66 Nan Li Shi Road, Xi Cheng District


Beijing, 100045, P.R. China


Phone: (++) 86 10 6803 8195


Fax: (++) 86 10 6803 8194




IR International Holdings, Inc. (Delaware, USA)


Shenzhen Representative Office


Unit 02-04, 15/F Modern International Building


No. 3038 Jintian Rd., Futian District


Shenzhen, 518048, China


Phone: (++) 86 755 8368 3686


Fax: (++) 86 755 8368 3690







IR International Holdings, Inc. (Delaware, USA)


Shanghai Representative Office


Unit A-B, 10th Floor, Xinmei Union Square


999 Pudong South Road


Shanghai, 200120, China


Phone: (++) 86 21 6887 7600


Fax: (++) 86 21 5877 3880




IR International Holdings, Inc. (Delaware, USA)


Taiwan Representative Office


22F, Suite A, 105, Section 2, Tun Hwa South Road,


Taipei, 10682, Taiwan


Phone: (++) 886 2 2709 8356


Fax: (++) 886 2 2709 8150




International Rectifier Southeast Asia Pte Ltd


International Rectifier- Phils


Unit 2008, 20F Strata 100 Bldg


F. Ortigas Jr Road


Ortigas Center, Pasig City 1605


Tel: 632 633 7882


Fax: 632 631 6661





Xi’an IR-PERI Power Co. Ltd. (China)


#94 Zhu Que Street


Xian, Shaanxi Province, 710061, P.R. China


Phone: (++) 86 29 521 5895


Fax: (++) 86 29 521 5896




International Rectifier Korea (Korea)


9F Dukmyung Bldg.


170-9 Samsung-Dong, Kangnam-Gu,


Seoul, 135-741 Korea


Phone: (++) 82 2 557 7613


Fax: (++) 82 2 557 7617




International Rectifier Southeast Asia Pte. Ltd. (Singapore)


23 Serangoon North Avenue 5


#03-00 BTH Centre Singapore 554530


Phone: (++) 65 6506 2000


Fax: (++) 65 6506 2099




International Rectifier Hong Kong, Ltd. (Hong Kong)


Unit 308, New East Ocean Centre


No. 9 Science Museum Road


Tsimshatsui East, Kowloon


Hong Kong


Phone: (++) 852 2803 7380


Fax: (++) 852 2540 5835









International Rectifier India


International Rectifier Corporation, India Liaison office


No. 407, Prestige Centre Point, Cunningham Rd.


Bangalore 560052, India


Tel: ++91 80 4114 2644/2645


Fax: ++91 80 4114 2643






International Rectifier India


IR International Holding Inc.


#213, Ansal Tower


#38, Nehru Place


New Delhi - 110019


Tel: ++91 11 2646 3685/3686


Fax: ++91 11 2646 3687