The TIP36C transistor is the most powerful tranisistor used in WPC machines. It is used for flipper coils, and high power solenoids. It is typically driven by a TIP102.
This part is in the newer TO-247 all-black package. Choose this one if you don't mind that it looks a little different. It works exactly the same as the original part.
You probably need one of these if a flipper is stuck on, or a high power coil is jammed. They fail if there is a shorted coil on the playfield.
Williams part number equivalent 5191-12179-00