Gallium-nitride power devices used for high-density power conversion in AI server racks, including 800-volt distribution designs. They sit between gallium feedstock upstream and data-center power distribution downstream. Vendor fab utilization and order books set how tight supply runs against demand.
A sustained tight read means demand for gallium-nitride power devices is running ahead of installed fab capacity, so vendors run their lines near full and buyers wait for supply. The resolving read is device-maker fab utilization, a proxy for how hard capacity is worked, not a direct count of shipped devices. Relief arrives only as announced capacity expansions qualify and ramp, over quarters rather than a single order cycle.