Hola Amigo,

What is the difference between the 2N3055 and the MJL21194? I know the characteristics of the other parts (the 1N914 is a fast switching diode, the 1N4007 is a high power/voltage diode, etc) but when it comes to transistors I don't know squat. What are the characteristics that we're supposed to be looking for in this part? Power rating is one, but I have no idea what the others should be.

If you don't know, maybe someone else who does can kindly interject.