The next frontier: GaN HEMTs for high-reliability space and defense power architectures - Military Embedded Systems

As the space and defense sectors increasingly demand high-performance computing and real-time data processing, the need for efficient, reliable, and compact power devices has become critical. Gallium ... Read original →

Infineon's strategic push into GaN HEMTs signals a pivotal shift of wide-bandgap semiconductors from consumer fast-charging into high-reliability aerospace power systems. Technically, GaN’s gate-oxide-free architecture inherently resists total ionizing dose (TID), yet single-event effects (SEE) demand co-optimized drivers, packaging, and EUV-enabled process control. Regulatory tightening under U.S. ITAR and EU export controls will compel firms to build geographically segmented, redundant supply chains—substantially inflating qualification costs. Competitors like Wolfspeed and Navitas will accelerate space-grade GaN roadmaps, while Taiwan, China-based players remain constrained by 6-inch wafer limitations and insufficient radiation-testing infrastructure. Within 18 months, as LEO mega-constellations scale, GaN will dominate onboard power modules, establishing a new triad of efficiency, SWaP-C, and radiation hardness that redefines value capture across the space electronics ecosystem.