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Infineon makes the tiny computer chips that go inside cars, power supplies, and industrial machines, helping things run efficiently and safely.
Infineon is a chipmaker that specializes in a kind of chip most people never see: the ones that manage power and make cars, factories, and electronics work. If you drive a modern car, there's a good chance several Infineon chips are inside it, controlling everything from the airbags to the electric windows to the battery system in an electric vehicle. The company sells to carmakers, industrial equipment manufacturers, and data center operators rather than to you directly.
The business splits into a few big chunks. Its automotive arm sells chips to car companies and their suppliers, and it's the largest part of the company. Another arm makes power chips that convert and control electricity, used in everything from phone chargers to solar inverters to electric motors. A third sells sensors and secure chips, including the little security chip inside credit cards and passports that keeps your data safe. Customers pay Infineon because these chips are hard to design and even harder to make reliably at scale, and because a faulty chip in a car can mean a recall. The chip industry is brutally cyclical, and Infineon knows this firsthand. When demand for cars and electronics is strong, its factories run flat out and profits swell; when it weakens, orders dry up fast. The company has spent heavily to build and buy capacity, including a major acquisition of Cypress Semiconductor in 2020 that expanded its automotive and connectivity business. It's also investing in new factories in Germany and Malaysia to serve the growing electric vehicle and renewable energy markets.
For most of its life, Infineon was not its own company. It was the semiconductor arm of Siemens, the giant German industrial group. In 1999, Siemens spun it off into a separate company based in Munich. The idea was simple: chips are a fast, risky business, and a big conglomerate did not want that rollercoaster inside its house.
A year later, Infineon sold shares to the public in Frankfurt and New York. In Germany it was marketed as a "second Volksaktie" — a people's share, the kind of stock ordinary citizens were encouraged to buy. It doubled in the first minute of trading and joined Germany's top index within months. For a moment, it looked like the safest bet in the country.
Then the bubble burst. Chip demand fell, memory-chip prices collapsed, and Infineon's stock crashed from its offering highs to a record low. The company lost about a billion euros in a single year. The lesson was brutal: memory chips are a commodity, and commodity prices can turn a hero into a cautionary tale overnight.
Infineon decided it had had enough of that rollercoaster. In 2006 it split off its Memory Products division into a separate company called Qimonda. On paper, this freed Infineon from the volatile memory business that had caused its huge losses.
The freedom came at a price. Qimonda, which had employed around 13,500 people at its height, filed for bankruptcy in early 2009. The memory business Infineon had pushed out the door did not survive on its own. Infineon was now a chipmaker without memory chips — and it had to figure out what it actually was.
The answer started to take shape. Infineon sold its Wireless Solutions business, including mobile phone chips and radio-frequency power transistors, to Intel for 1.4 billion dollars. That completed its exit from mobile communications. The company was now pointing itself toward cars, industrial machines and security chips — less glamorous, but steadier ground.
Infineon then went shopping for strength in power semiconductors — the chips that manage electricity. It bought International Rectifier, a power semiconductor maker, for about 3 billion dollars. Power chips became a core pillar of the new Infineon.
The biggest bet came in 2020, when Infineon closed its 9 billion euro purchase of Cypress Semiconductor. The deal pushed Infineon into the world's top ten chipmakers. The company that had once been a cast-off division of Siemens was now a heavyweight in its own right.
In 2022, Jochen Hanebeck took over as CEO and chairman of the management board. His job was to lead the company through its next growth phase, building on the automotive, industrial and security focus it had spent two decades assembling.
Infineon kept adding pieces. It bought Marvell's Automotive Ethernet business for 2.5 billion dollars, folding the Brightlane portfolio into its Automotive division. The move strengthened its position in connecting the electronics inside cars — a small but fast-growing corner of the automotive chip world.
Looking ahead, Infineon announced it would build the world's first high-volume 300 mm GaN power semiconductor fab in Villach, Austria, investing about 1.23 billion dollars. Production is slated for the end of 2027, aimed at AI data centers and energy infrastructure. The move follows TSMC's exit from GaN manufacturing, leaving Infineon positioned to lead the GaN power market.
What makes Infineon interesting is that it sits in the boring but essential layer of the electronics world. It doesn't chase the fastest, smallest chips like the ones in your phone; it makes dependable chips that have to work for a decade in harsh conditions. That's a steadier business than it sounds, but it's still a business where a downturn in car sales or a glut of inventory can hit hard. In its most recent fiscal year, revenue came in around 15 billion euros, and the company has been navigating a rough patch as automotive demand cooled from its post-pandemic highs.
Saved answer · last researched 22 Oct 2026