Thank you both.
Mariush, it's funny you should suggest that. I did 831A transistor and 831A 975 transistor, but not 975 transistor.
Anyway. Now I can give it a test and see.
bson. I kinda hope that's not the case here. I would like this part to be a MOSFET as the datasheet Mariush found would suggest and E, B, and C are not usually used for those. But who knows, it could still be the case, especially if it is just a BJT. I can't say I've ever seen it labeled on a TO-92 package before though.