UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  March 11, 2011

INTERNATIONAL RECTIFIER CORPORATION

(Exact name of registrant as specified in its charter)

(310) 726-8000

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01  Regulation FD Disclosure

The securities trading policy of International Rectifier Corporation (the “Company”) permits its employees, officers and directors to engage in pre-determined plans for trades on a regular basis over a period of time of specified amounts of Company stock in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934.

As permitted by this policy, Chief Executive Officer Oleg Khaykin has entered into a sales plan for common stock arising from the exercise of a portion of the Company stock options he holds.  Mr. Khaykin will sell up to 300,000 shares over a period of about eight months. The sales plan follows the expiration of a prior sales plan previously disclosed by the Company on May 10, 2010.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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