Y32NB50 mystery mosfet

[Circlotron]

Back in the late 90's a place i worked at was going to use an ST Y32NB50 mosfet in the PFC stage of a power supply they were about to manufacture. It is rated 500V 0.12 ohms, 32A IIRC. Ended up using a Y34NB50 instead which has very similar specs but a shade faster I think, I brought home about 75 unwanted samples and of course I have only used two... Nowadays you look up this part on the web and there is only a handful of references and they are pretty much all on AliBaba and with no stock anyway. No datasheets either. What's the go with these things???

[amyk]

ST datasheet availability is notoriously horrible

But this one isn't that hard --- a STY34NB50 is a 34A 500V part, so take a guess at what a STY32NB50 would be...?

It's easy to see why they would stop marketing the 32A part --- I'm almost willing to bet the 34A part is the same die which they figured out would be fine with 34A, after producing a long run of them.

[Circlotron]

Okay, but why almost no references to them? Am I the only person on earth that has some?