ترانزیستور قابلمه ای 2N3055

 Packaged in a TO-3 case style, it is a 15 amp, 60 volt , 115 watt power transistor with a β (forward current gain) of 20 to 70 at a collector current of 4 A (this may be 100 to 200 when testing using a multimeter). It often has a transition frequency of around 3.0 MHz and 6 MHz is typical for the 2N3055A