Cass944

ok im making a circuit. I have a pretty good knowledge of electronics but this has got me wondering. Ive never used a transistor like this before. but dont most of them have 3 prongs?

this is the part of the diagram.
<img src="http://boards.rennlist.com/upload/transistordiagram.gif" alt=" - " />

and this is the power transistor i have that matched the numbers.
<img src="http://boards.rennlist.com/upload/transistor.jpg" alt=" - " />

obviously in the diagram there are 3 connections going to/from the transistor. but i only see 2 prongs on the actual transistor. is maybe the outer metal part the other connection? like do i just solder the wire to one of the holes in the case part? if so i have no idea which is which.

can anyone help me out. Usualy SOMEONE knows about this kinda stuff.

thanks alot!

Cass944

ohps, i founda pdf file that says the collector is the case. sorry for taking up space with another ot thread. john or someone, you can deleat this if it doesnt just fall into the vast sea of old threads before anyone sees it.