IRG4PC50UD Alternative

[gnif]

Hi All,

I am looking for a modern alternative to the IRG4PC50UD to repair a UPS with a pair of these that have blown.
https://cdn.datasheetspdf.com/pdf-down/G/4/P/G4PC50UD_InternationalRectifier.pdf

These parts are obsolete and the only place I can find them in on eBay and as such are quite likely fakes.

This STGWA50M65DF2 looks to me like a viable alternative but I am not sure and the lead time on getting a couple is quite long:
https://au.mouser.com/datasheet/2/389/dm00249585-1798696.pdf

Any other suggestions would be appreciated.

[capt bullshot]

If this were for production, replacing of the IGBT would call for lengthy measurements to ensure the new IGBT would meet all specs of the product. Especially thermal behaviour and short circuit robustness.

Anyway, if it's for a one off repair job, most probably any modern IGBT with same voltage rating and same (or not too much above) current rating should do the job. I'd check for total gate charge too, as this has influence on the gate driver speed and load. Should be in the same ballpark or better (lower).

Modern (higher gen #) are less robust than the older ones, as the silicon die area decreases, so there's less thermal mass available for overload situations. I don't have the figures, but a viable approach on the safe side would be to select for a similar die size at the same voltage rating (this should result in higher current rating), still check for input capacitance and total gate charge to not increase too much.