2N3766 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 40 to 160
• Transition Frequency, min: 10 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 2N3766 with the 2N3767, 2SC1113 or 2SC1444.