- Report of Foreign Issuer (6-K)

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934

March 17, 2009

INFINEON TECHNOLOGIES AG

Am Campeon 1-12
D-85579 Neubiberg/Munich
Federal Republic of Germany
Tel: +49-89-234-0
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F þ Form 40-F o

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- .

The Deutsche Börse has announced that, effective March 23, 2009, Infineon Technologies AG will be removed from the DAX 30 stock market index because it no longer fulfills the market capitalization requirements of the DAX 30 stock market index.

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.



	INFINEON TECHNOLOGIES AG


Date: March 17, 2009	By:	/s/ Peter Bauer
		Peter Bauer
		Member of the Management Board and Chief Executive Officer


	By:	/s/ Dr. Marco Schröter
		Dr. Marco Schröter
		Member of the Management Board and Chief Financial Officer