Infineon Technologies has completed its acquisition of C2i Semiconductors, closing a deal the German chipmaker expects to strengthen its position in wide-bandgap power devices, EE Times India reports.

The completion marks the end of a transaction that Infineon framed as a building block in its silicon-carbide (SiC) strategy. C2i Semiconductors — a specialist in SiC and gallium-nitride (GaN) wafer and epitaxy technology — brings materials expertise that sits upstream of Infineon's device manufacturing, targeting the automotive, industrial and energy markets where wide-bandgap semiconductors are displacing silicon IGBTs.

Why does the deal matter for Infineon?

Infineon is the world's largest power-semiconductor supplier, and its growth thesis rests heavily on SiC. Demand for SiC MOSFETs is rising fastest in electric-vehicle traction inverters, onboard chargers and industrial power supplies, and secure access to SiC substrates and epitaxial wafers has become a competitive bottleneck across the industry.

By absorbing C2i's wafer and epitaxy capability, Infineon gains more direct control over a critical step in the SiC supply chain. That matters because substrate quality and epi-layer defects directly set device yields and cost — the two variables that decide who wins design slots at automotive Tier 1s.

The acquisition also fits a broader industry pattern. Chipmakers across the power segment have been vertically integrating toward SiC materials to lock in capacity:

• Device makers are signing long-term substrate supply agreements or buying into wafer production
• Carmakers are striking direct offtake deals with SiC suppliers to guarantee volumes
• Materials specialists have become acquisition targets as capacity remains tight relative to projected EV demand

What does C2i bring to the table?

C2i Semiconductors specializes in wide-bandgap materials technology — the substrate and epitaxial wafer layers on which SiC and GaN devices are built. Epitaxy is among the most technically demanding steps in SiC production, and internal capability here can shorten development cycles and improve cost positions for device makers.

For Infineon, which operates SiC device fabs and has announced aggressive capacity expansion plans for wide-bandgap products, adding materials competence inside the company reduces dependence on third-party epi suppliers at a time when that market remains capacity-constrained.

EE Times India, which first reported the completion, identifies the transaction as a completed acquisition rather than a pending deal, meaning integration can now proceed.

What comes next?

The competitive stakes are high. Infineon competes in SiC against STMicroelectronics, onsemi, Rohm and Wolfspeed, all of which have moved to secure substrate and epi capacity through partnerships, investments or outright ownership. Vertical integration into materials has become the industry's default answer to yield and cost pressure in SiC.

Infineon has previously stated ambitions to hold a leading share of the SiC market as electric-vehicle production scales through the decade. Transactions like this one show the company is willing to buy, not just build, the materials capability needed to hit those targets.

With the acquisition closed, attention shifts to how quickly Infineon folds C2i's technology into its wide-bandgap production network — and whether the added materials control translates into yield and cost advantages in the fight for automotive SiC sockets.