MJE3055 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 70 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 10 A
• Collector Dissipation: 90 W
• DC Current Gain (h_fe): 20 to 100
• Transition Frequency, min: 2 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-127

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the MJE3055 is the MJE2955.You can replace the MJE3055 with the 2N5990, 2N5991, MJE1661 or NTE182.