So I blew some more IRG4PC50UD's. Digikey has them for ass-all price, and Allied is out of stock, so I ordered the suspiciously cheap but similar part IRG4PC50KD.
Reading through the data sheets simultaneously, it looks like the KD is slightly worse performing, perhaps as if the UDs were selected for lower losses. Does this sound about right? Anyone have experience with this family?
-- Deep Fryer: A very philosophical monk. Website @