MOSFETs can go way, way higher than that. There are CPUs (well, microcontrollers) that go way higher than that.

https://www.digikey.com/catalog/en/partgroup/ht83c51/40264

> Specified Over -55 to 225°C

> Typically, parts will operate up to 300°C for a year, with derated performance.

Whether 100°C is fine for a CPU is a question for the individual CPU.

Thank you. I used to design microprocessors (a LONG time ago) and TIL that there are CPUs that can operate at 225°C. Wow. And even limping along at 300°C? Wow wow. BTW, I can't stand the 8051 architecture, but that's really off topic. I guess if you need 225, you need that chip. Reminds me of the Henry Ford / Model T quote...

8051 can certainly service interrupts quickly and predictably, which is probably all you want if you are sticking a microcontroller inside a turbine engine or oil drill.

>and MOFSETs can go up to 115C

Mosfets have a maximum junction temperature of about 175C

Depends on the MOSFET, of course. Some MOSFETS will run up to 300°C, according to the manufacturers.

https://www.digikey.com/product-detail/en/HTNFET-T/342-1091-...

Used in e.g. turbine engines, instrumentation in oil wells or mining operations, and industrial process control. You can get microcontrollers that work in similar temperature ranges, “in any architecture as long as it’s an 8051”.

100%, I should have said "depends on MOSFET" instead of just moving the bar.