Check in Digikey for transistors, and sort on transistors, single bjt. Scroll to the right and find the selection for NPN+diode. (and check 'in-stock').
Looks like there are a few to choose from starting at 56 cents.
Why on earth do you want one?, protection diodes need to really go across the relay, NOT across the transistor - just use a separate diode across the relay.
I have a question please, not related to BJT and relay.
I found a N-channel MOSFET that has a diode across its Drain-Source channel.
If the VGS is lower than VTO, then IDS should be zero and therefore VDS becomes VCC (assuming its source's connected to VCC).
In my case, VCC = 5V which is larger than the VF of the Drain-Source diode.
How come the diode doesnt start coduncting current and therefore increasing IDS from 0A to IF of the diode?