The AI Infrastructure Stack
Overview  /  Tier V Silicon  /  Layer 12: Fabrication (Foundries)
Sub-category 12.5

Compound Semiconductor & Power Semi Fabs

SiC and GaN fabs — relevant for AI power management (Layer 9.7) and grid (Layer 17).

Players

Players: Wolfspeed WOLF, onsemi ON, Infineon IFX.DE, STMicroelectronics STM, Coherent (SiC substrates) COHR, SK Siltron CSS SK Group, Navitas (GaN) NVTS, Transphorm (GaN) Renesas

Analysis coming soon — this page is scaffolding for deeper research into compound semiconductor & power semi fabs.