I don't work in this field (just adjacent to it), but I would start looking at Digi-Key, RS, Mouser, Farnell. It might be that people working in power electroni

I don't work in this field (just adjacent to it), but I would start looking at Digi-Key, RS, Mouser, Farnell. It might be that people working in power electronics have other go-to suppliers but I'm not familiar with them.