DigiKey's live help says this is a suitable replacement part:
http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=ZTX451-ND I gotta say, I'm pretty impressed with DigiKey -- it's noon on a Saturday where I am right now, and their live help chat answered my question with a suitable replacement part instantly.
To boot, they also ship First Class mail, so it will only cost me $2 to get these transistors. Some of the other sites started at $7 and went up from there. Since I'm only buying $6 in transistors, it seemed a bit foolish to pay more in shipping than in parts.
Thanks for the offer, SirPeale, but I think Digikey can get me what I need.
