News Experimental transistor survives in a nuclear reactor at 125 degrees Celsius temps — GaN semiconductor can survive up to five years in a reactor

"Scientists found that the GaN transistor can survive temperatures up to 125 degrees Celcius (257F), the limits of the reactor's safety threshold, and they predict it can last for five years in the extreme conditions."

As long is it is fine for said chip to fail when the reactor becomes unsafe... imagine dealing with an overloading reactor and you lose all your temperature sensors on the inside.