Infineon secures 200mm SiC wafer supply from Wolfspeed - Evertiq

Infineon's 200mm SiC wafer lock-in with Wolfspeed is not a procurement decision—it is a strategic bet on the cost curve. The 150mm-to-200mm transition lifts die yield by roughly 78%, collapsing the last 30% cost gap between SiC and silicon IGBTs. That residual gap is the single barrier keeping SiC out of mid-tier EVs and industrial drives. The risk is deliberately underpriced. Wolfspeed is mired in financial restructuring, and its Mohawk Valley 200mm line is nowhere near volume-yield maturity. Infineon's "supply security" is, in substance, a bankruptcy hedge dressed as a technology upgrade. Competitively, ST's Coherent partnership, onsemi's in-house substrate push, and the aggressive 200mm ramp by TanKeBlue and SICC will flood the substrate market within 18 months. Infineon's real adversary is not Wolfspeed but the pace at which Chinese substrate makers drive prices below $150 per wafer. Twelve-to-twenty-four-month outlook: 200mm SiC device costs will compress to within 1.2x of silicon equivalents, making SiC the default on 800V platforms. If Wolfspeed cannot hit full 200mm production by 2026, its pricing power will irreversibly shift to Asian supply chains.