Infineon with Strong Second Quarter and Positive Outlook

Neubiberg, Germany – April 18, 2011 – Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) today announces that revenues and Total Segment Result for the second quarter of the 2011 fiscal year are better than expected. For the second quarter of the 2011 fiscal year, Infineon expects revenues of Euro 994 million, up from Euro 922 million in the previous quarter, and a Total Segment Result margin of 20 percent. In the outlook for the second quarter of the fiscal year 2011 that was published on February 1, 2011, Infineon expected revenues to be up slightly compared to the first quarter of the fiscal year, with Total Segment Result margin of 18 to 20 percent. For the third quarter of the 2011 fiscal year, Infineon expects revenues and Total Segment Result margin at the level of the second quarter. Infineon will go into specifics concerning the past quarter, the outlook for the current quarter and the expectations for the fiscal year 2011 when presenting the figures for the second quarter of the fiscal year 2011 on May 3, 2011.

About Infineon Infineon Technologies AG, Neubiberg, Germany, offers semiconductor and system solutions addressing three central challenges to modern society: energy efficiency, mobility, and security. In the 2010 fiscal year (ending September 30), the company reported sales of Euro 3.295 billion with approximately 26,650 employees worldwide. With a global presence, Infineon operates through its subsidiaries in the U.S. from Milpitas, CA, in the Asia-Pacific region from Singapore, and in Japan from Tokyo. Infineon is listed on the Frankfurt Stock Exchange (ticker symbol: IFX) and in the USA on the over-the-counter market OTCQX International Premier (ticker symbol: IFNNY). Further information is available at www.infineon.com. D I S C L A I M E R This press release includes forward-looking statements and assumptions about the future of Infineon’s business and the industry in which we operate. These include statements and assumptions relating to general economic conditions, future developments in the world semiconductor market, our ability to manage our costs and to achieve our savings and growth targets, the resolution of Qimonda’s insolvency proceedings and the liabilities we may face as a result of Qimonda’s insolvency, the benefits of research and development alliances and activities, our planned levels of future investment, the introduction of new technology at our facilities, our ability to continue to offer commercially viable products, and our expected or projected future results. These forward-looking statements are subject to a number of uncertainties, including broader economic developments, trends in demand and prices for semiconductors generally and for our products in particular, as well as for the end-products that incorporate our products, the success of our development efforts, both alone and with partners; the success of our efforts to introduce new production processes at our facilities, the actions of competitors; the continued availability of adequate funds, the outcome of antitrust investigations and litigation matters, and the outcome of Qimonda’s insolvency proceedings, as well as the other factors mentioned in this press release. As a result, Infineon’s actual results could differ materially from those contained in these forward-looking statements. You are cautioned not to place undue reliance on these forward-looking statements. Infineon does not undertake any obligation to publicly update or revise any forward-looking statements in light of developments which differ from those anticipated.