MJ8502 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 700 V
• Collector-Base Voltage, max: 1200 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 5 A
• Collector Dissipation: 150 W
• DC Current Gain (h_fe): 8
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.You can replace the MJ8502 with the BUX48C, MJ12004, MJ12005, MJ8503, MJ8504 or MJ8505.