2N6078 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 250 V
• Collector-Base Voltage, max: 275 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 7 A
• Collector Dissipation: 45 W
• DC Current Gain (h_fe): 12 to 70
• Transition Frequency, min: 7 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-66

Here is an image showing the pin diagram of this transistor.You can replace the 2N6078 with the 2N6077 or 2N6079.