2N4037 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -40 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 5 W
• DC Current Gain (h_fe): 50 to 250
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.You can replace the 2N4037 with the 2N5323, BC160, BC161, BC460 or BC461.