EX-23.1 2 exh23-1.htm EX-23.1 exh23-1.htm
 
Exhibit 23.1
 
Consent of Independent Registered Public Accounting Firm
 
We consent to the incorporation by reference in the Registration Statements (Forms S-8 Nos. 33 44332 and 333 57575) pertaining to the Retirement Savings Plan of International Rectifier Corporation of our report dated June 18, 2010 with respect to the financial statements and schedules of the International Rectifier Corporation Retirement Savings Plan included in this Annual Report (Form 11-K) for the year ended December 31, 2009.
 
/s/ Ernst & Young LLP
 
Los Angeles, California
June 18, 2010