Infineon Technologies and Wolfspeed said on 15 October 2026 that they have signed a new multi-year supply agreement for 200-millimetre silicon carbide (SiC) wafers, transitioning Infineon’s existing Wolfspeed supply relationship from 150 mm to 200 mm substrate technology.
Neither company disclosed a contract value, wafer volumes or the number of years covered. Treat those as unknown.
What Infineon says the deal does
Infineon’s release says the agreement supports growing demand for SiC power semiconductors for electric vehicles, renewable energy systems and AI datacenter power infrastructure — Infineon’s market framing. COO Alexander Gorski said: “Silicon carbide is at the heart of the energy transition, and securing a high-quality, resilient supply of 200-millimeter substrates is essential to delivering on our customers’ long-term commitments.”
Infineon stresses a 20-year supply relationship with Wolfspeed and a multi-source substrate strategy, including its 200 mm SiC fab in Kulim, Malaysia. It argues larger wafers raise usable die area per wafer and improve manufacturing economics versus 150 mm.
What Wolfspeed adds
Wolfspeed CEO Robert Feurle said the addition of 200 mm wafers “builds on that foundation as we continue to support Infineon’s long-term silicon carbide needs,” and cast Wolfspeed as a leading Western SiC materials supplier.
On market size, Wolfspeed cites the Yole Power SiC 2026 report: the global SiC power device market is “expected to more than triple from $3.4 billion in 2024 to $11.1 billion by 2031.” Credit that forecast to Yole via Wolfspeed, not as TSN’s independent projection.
What “multi-year” does and does not say
Both releases use multi-year language and stress a relationship already spanning more than 20 years, but neither converts that history into a public schedule of wafer deliveries. Infineon’s Munich/Durham joint announcement frames the deal as supply-chain resilience for customers’ “long-term commitments”; Wolfspeed frames it as extending Western SiC materials leadership. Readers looking for a dollar headline will not find one here — and should not infer one from the Yole industry forecast Wolfspeed quotes.
That Yole line ($3.4 billion in 2024 to $11.1 billion by 2031) is about the global SiC power device market, not about Infineon’s purchase order. Keep the two scales separate.
Why SiC shows up in AI power talk
Infineon says AI data centres are beginning to emerge as a demand driver because conversion efficiency across the power chain is an operating-cost issue for hyperscalers, and SiC’s switching and thermal traits can suit stages where silicon hits practical limits. That is the company’s technical marketing case alongside EVs, solar and industrial drives — not a disclosed MW order book tied to this wafer deal.
Context from earlier TSN coverage
Power-equipment suppliers are lining up AI data-centre packages in parallel with semiconductor substrate moves. TSN covered Mitsubishi Heavy Industries and Ingeteam’s US MoU on power for AI data centres and Hitachi Energy and Ansaldo Energia’s MoU on combined generation and grid packages. Those are equipment MoUs; today’s Infineon–Wolfspeed item is a wafer supply extension — keep them separate.
Note on sourcing
Figures and quotes in this post are taken from the named primary or named same-day report linked in Sources; company goals and forecasts stay attributed to the companies (or to Yole via Wolfspeed where stated).
Why it matters
Moving a long-running 150 mm SiC relationship onto 200 mm is about substrate resilience for Infineon’s Kulim-scale manufacturing story. Without volumes or dollars, the news is strategic sourcing, not a sized CapEx event.
What’s still unknown
- Annual wafer volumes and pricing
- Agreement length beyond “multi-year”
- How much of Infineon’s SiC will still come from other substrate sources
What to watch
Watch Infineon’s SiC capacity updates from Kulim and any later disclosure of volumes under the Wolfspeed 200 mm line.
What this means
- Multi-year 200 mm SiC wafer supply from Wolfspeed to Infineon; shift from 150 mm.
- No value or volumes published.
- Yole market triple-to-2031 figure: via Wolfspeed.
Sources
- Infineon, “Infineon signs 200-millimeter silicon carbide wafer supply agreement with Wolfspeed…”, 15 October 2026
- Wolfspeed, “Infineon and Wolfspeed Expand and Extend Long-Term Silicon Carbide Wafer Supply Agreement to Include 200 mm”, 15 October 2026
Related stories
- Mitsubishi Heavy Industries and Ingeteam Sign a US MoU on Power for AI Data Centres
- Hitachi Energy and Ansaldo Energia Sign an MoU to Offer Combined Generation and Grid Packages
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