2N457A Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -30 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -20 V
• Collector Current − Continuous, max: -7 A
• Collector Dissipation: 85 W
• DC Current Gain (h_fe): 30 to 90
• Operating and Storage Junction Temperature Range: -65 to +110 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.You can replace the 2N457A with the 2N3789, 2N458A, 2N5871, 2N5875, 2N5879, 2N5883, 2N5883G, 2N6246, 2N6317, 2N6469, 2SA658A, BDW52, MJ14001, MJ14001G or MJ2940.