Infineon to Supply SiC Power Modules for Siemens Semiconductor Circuit Breakers - thelec.net

Infineon Technologies announced on June 8 that it will supply 1200V silicon carbide (SiC) power modules, branded as CoolSiC MOSFETs, to Siemens for use in its SENTRON 3QD2 solid-state circuit breaker ... Read original →

Infineon’s supply of 1200V CoolSiC modules to Siemens marks the definitive shift toward microsecond-scale electrical protection. This deal pressures SiC substrate suppliers to accelerate 8-inch wafer ramp-up and forces AI data centers to overhaul power distribution architectures—legacy breakers can’t meet GPU clusters’ sub-millisecond fault tolerance. While the EU’s Net-Zero Industry Act shields Siemens from supply chain volatility, it raises compliance barriers for non-European rivals. STMicroelectronics and ROHM will likely pivot automotive-grade SiC modules toward industrial breakers to capture this high-margin segment. Within 18 months, semiconductor circuit breakers will evolve from optional to mandatory in AI infrastructure, creating a multi-billion-euro market and compelling foundries like TSMC and SMIC to reassess SiC fab prioritization.