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Infineon Technologies

Large semiconductor provider.


Infineon Technologies designs and manufactures a range of semiconductor products across the automotive, power electronics, industrial power control, security IC, and IoT markets.

It ranks among the ten largest semiconductor companies by market share.

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).

Infineon was founded in 1999 as a spin out of Siemens’ semiconductor operations.

Acquisitions and Divestitures

May 2023: Acquired Imagimob, provider of a platform for machine learning on edge devices.

April 2020: Acquired Cypress Semiconductor in a cash deal worth €9.0 billion (~$10 billion).

November 2018: Acquired Siltectra, which developed Cold Split technology to process crystal material efficiently and with minimal loss of material, for €124 million (~$142 million). Infineon planned to use it to split silicon carbide (SiC) wafers, thus doubling the number of chips out of one wafer.

March 2018: Sold the RF Power Business to Cree’s Wolfspeed unit for approximately €345 million (~$420 million).

February 2018: Acquired Merus Audio, a maker of energy-efficient integrated audio amplifier solutions for smart home and battery-powered speakers.

September 2017: Sold the IR Newport Ltd. subsidiary manufacturing site in Newport, U.K., to Neptune 6. It planned to operate as Newport Wafer Fab Ltd.

October 2016: Acquired Innoluce, a maker of miniature laser scanning modules that integrate silicon-based solid-state MEMS micro-mirrors for lidar systems.

July 2016: Proposed acquisition of Wolfspeed from Cree for $850 million. The deal was blocked by the U.S. Committee on Foreign Investment in February 2017. A termination fee of $12.5 million was paid to Cree.

January 2015: Acquired International Rectifier, a maker of power semiconductors, for about $3 billion.

January 2011: Sold its Wireless Solutions business, which included mobile phone and RF power transistors for cellular base stations, to Intel for $1.4 billion in cash. It operated as Intel Mobile Communications (IMC).

November 2009: Sold its Wireline Communications business to investor Golden Gate Capital for €250 million (~$370 million). The new company was named Lantiq and was later acquired by Intel in 2015 for $345 million.

April 2008: Acquired Primarion, a fabless company that designed digital power ICs for computing, graphics and communication applications.

March 2008: Sold the hard disk drive (HDD) business to LSI Corporation.

August 2007: Sold Altis Semiconductor, a joint venture with IBM, to Advanced Electronic Systems (AES). Altis was formed in 1999 and manufactured semiconductor components for communications, automotive, and security applications in 250nm to 130nm.

August 2007: Acquired the mobility products business of LSI Corporation for approximately €330 million (~$451 million) plus a contingency payment of up to €37 million (~$50.5 million).

June 2007: Acquired the DSL Customer Premises Equipment (CPE) business of Texas Instruments.

April 2007: Sold the Polymer Optical Fiber (POF) business to Avago. The unit made automotive multimedia infotainment networks and transceivers for safety systems.

May 2006: Spun out the Memory Products division as Qimonda. A DRAM manufacturer, Qimonda is now defunct. Infineon later acquired the company’s patents.

August 2005: Sold the optical communications business with bidirectional components (BiDi) for FTTx applications to EZconn Corporation, including assets and IP.

June 2005: Spun out the wearable electronics activities to the company Interactive Wear AG iG in a management buyout.

April 2005: Sold a portion of the Optical Networking business unit to Exar Corporation, including assets relating to multi-rate TDM framer products, Fiber Channel over SONET/SDH, Resilient Packet Ring (RPR), as well as certain intellectual property for Data Over SONET products.

January 2005: Sold the Fiber Optics transceiver business to Finisar Corporation.

January 2004: Acquired ADMTek, a fabless company specializing in broadband networking and communications chips for home gateways, for about €80 million (~$101 million) in cash.

May 2003: Acquired SensoNor, a provider of tire pressure and inertia sensors, for €48 million (~$54 million).

March 2003: Acquired MorphICs Technology, a developer of configurable digital baseband circuits for terminal devices and basestations for 3G wireless communications.

September 2002: Acquired Ericsson Microelectronics (MIC), Ericsson’s internal semiconductor supplier, for approximately €400 million (~$375 million). MIC was a large supplier of Bluetooth and RF components for mobile and high end power amplifiers.

April 2002: Sold the gallium arsenide semiconductor business to TriQuint.

June 2001: Sold the infrared components business to Vishay Intertechnology for approximately $120 million.

April 2001: Acquired Catamaran Communications, a maker of ICs for the 40 Gbps and 10 Gbps segments of the optical networking market, for $250 million in common stock.

October 2000: Acquired Ardent Technologies, a supplier of high-bandwidth ICs for LAN switching systems, for $42 million.

August 2000: Sold the Image and Video consumer electronics operations to Micronas Semiconductor Holding for €250 million (~$229 million).

April 2000: Acquired Savan Communications, a provider of VDSL technology for broadband data transmission for the last mile of network access and within local networks, for about $120 million.

  • Type: Company


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