Infineon announces key figures for the financial first quarter 2006

Munich, Germany – January 20, 2006 – Infineon Technologies AG (FSE/NYSE:IFX) today announced key figures for the first quarter of the 2006 financial year. The company has recorded revenues of Euro 1.67 billion and an EBIT loss of Euro 122 million. The net loss was Euro 183 million with a loss per share of Euro 0.25. Within the business groups, the performance of the two logic segments was ahead of internal as well as average analyst expectations. The Automotive, Industrial and Multimarket segment posted revenues of Euro 652 million and an EBIT of Euro 51 million. The Communication segment saw revenues of Euro 334 million and a negative EBIT of Euro 21 million. Together, the two logic segments recorded sales of Euro 986 million and an overall positive EBIT of Euro 30 million prior to inclusion of Other Operating Segments and Corporate and Reconciliation. The favourable development of the two logic segments could not offset a significant deterioration of the EBIT in Memory Products, mainly due to the strong decrease in average selling prices, in particular for DDR2 memories. Revenues of the Memory Products segment were Euro 678 million with an EBIT loss of Euro 118 million. Today, Infineon will not provide further details. The company will announce complete results for the first quarter of the 2006 financial year as well as an outlook for the current quarter on January 24, 2006. The same day, Infineon will host a telephone conference with analysts and investors at 10:00 a.m. Central European Standard Time (CET), and with media at 11:30 a.m. (CET). Both conference calls will be available live and for download on Infineon‘s web site at http://www.infineon.com. D I S C L A I M E R This discussion includes forward-looking statements about our future business. These forward-looking statements include statements relating to future developments of the world semiconductor market, especially the market for memory products, Infineon’s future growth, the benefits of research and development alliances and activities, our planned levels of future investment in the expansion and modernization of our production capacity, the introduction of new technology at our facilities, the transitioning of our production processes to smaller structures, cost savings related to such transitioning and other initiatives, our successful development of technology based on industry standards, our ability to offer commercially viable products based on our technology, and our ability to achieve our cost savings and growth targets. These forward-looking statements are subject to a number of uncertainties, including trends in demand and prices for semiconductors generally and for our products in particular, the success of our development efforts, both alone and with our partners, the success of our efforts to introduce new production processes at our facilities and the actions of our competitors, the availability of funds for planned expansion efforts, the outcome of antitrust investigations and litigation matters, as well as the other factors mentioned herein. As a result, our actual results could differ materially from those contained in the forward-looking statements. Infineon, the stylized Infineon Technologies design are trademarks and servicemarks of Infineon Technologies AG. All other trademarks are the property of their respective owners.

About Infineon Infineon Technologies AG, Munich, Germany, offers semiconductor and system solutions for automotive, industrial and multimarket sectors, for applications in communication, as well as memory products. With a global presence, Infineon operates through its subsidiaries in the US from San Jose, CA, in the Asia-Pacific region from Singapore and in Japan from Tokyo. In fiscal year 2005 (ending September), the company achieved sales of Euro 6.76 billion with about 36,400 employees worldwide. Infineon is listed on the DAX index of the Frankfurt Stock Exchange and on the New York Stock Exchange (ticker symbol: IFX). Further information is available at http://www.infineon.com