Infineon and Wolfspeed sign 200mm SiC wafer deal as DoW backs $1.5 billion loan

On October 7, 2026, the U.S. Department of War conditionally committed up to $1.5 billion in funding to Wolfspeed, subject to due diligence, definitive agreements, and the company raising $750 million in new equity. On October 15, 2026, Infineon Technologies and Wolfspeed signed a multi‑year agreement to supply 200 mm silicon‑carbide wafers, upgrading a 20‑year supply relationship from 150 mm to 200 mm substrates. The larger wafer format adds roughly 78% more die area, cutting per‑chip substrate costs by spreading fixed production costs such as crystal growth, which occurs at about 2,700 °C (4,892 °F). Wolfspeed’s Mohawk Valley 200mm SiC fabrication plant in upstate New York is the first purpose‑built, large‑scale 200mm SiC device manufacturing facility globally, supporting domestic SiC production as a national security priority.

Silicon carbide’s wider band gap enables faster switching, higher temperatures, and lower energy losses, making it ideal for hyperscale AI infrastructure. Manufacturers use the material in EVs for traction‑motor energy conversion, battery charging, and DC‑DC converters, as well as in AI data center power supplies for GPU clusters. The U.S. Department of War’s loan is part of a national security push to ensure domestic production of SiC substrates critical for AI data centers and electric vehicles, and Wolfspeed’s Mohawk Valley plant supports domestic SiC production as a national security priority.

Wolfspeed’s AI data‐center revenue doubled over three consecutive quarters in fiscal 2026, outpacing its automotive segment even as EV demand softened. The company emerged from Chapter 11 bankruptcy on September 29, 2025, reducing debt by approximately $4.6 billion – about 70% of pre‐bankruptcy obligations – and securing a $292 million equity stake from Renesas Electronics, which holds 38.7% of post‐emergence equity. Those restructuring steps positioned Wolfspeed to attract both strategic investors and the DoW loan.

Infineon’s Kulim 3 fab in Malaysia, inaugurated on August 8, 2024, is designed to become the world’s largest 200 mm SiC power semiconductor facility, backed by a €7 billion ($8.1 billion) total investment and capacity for 4,000 jobs, and aims to capture 30% of the projected €20 billion ($23.13 billion) global SiC market by the end of the decade.

Infineon set a fiscal 2026 AI-related revenue target of €1.5 billion (~$1.73 billion). It plans to reach €2.5 billion (~$2.89 billion) by fiscal 2027. Its Power & Sensor Systems segment rose 34% to €1.44 billion in Q3 2026 with a 24.9% margin, both driven by SiC power chips for AI data centers.

Infineon’s Chief Operations Officer Alexander Gorski stated on October 15, 2026, that silicon carbide is essential for the energy transition and that securing a high-quality, resilient supply of 200 mm substrates is critical for meeting customer commitments. In Q4 2026, Wolfspeed launched a fifth-generation SiC MOSFET and advanced its 10 kV MOSFET technology, and it formed a dedicated Data Center Solutions team to focus on AI workloads and power efficiency.

Manufacturers use Infineon’s AI and automotive power semiconductors in EVs for traction‐motor energy conversion, battery charging, and DC‐DC converters, as well as in AI data center power supplies for GPU clusters. Wolfspeed reported fourth‐quarter 2026 revenue of $149.6 million and a net loss of $145.4 million, underscoring ongoing financial challenges despite strategic advances in AI data‐center markets.

Infineon’s shares traded at €54.36 on August 25, 2026, after the company posted record third‐quarter revenue of €4.172 billion (13% year‐on‐year) and lifted its full‐year 2026 revenue guidance to €16.3 billion. The U.S. Trade Representative launched a Section 301 investigation into Chinese SiC substrates, examining subsidies and pricing practices that may violate trade rules. Infineon added Chinese supplier SICC to its wafer roster in 2023 despite SICC being subject to China’s National Intelligence Law.

Infineon is set to report its Q4 2026 results on November 9, 2026. The stock’s discount to its high reflects sector volatility, though fundamentals remain strong with a 19.1% operating margin and AI-driven growth.