2SA1072 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -12 A
• Collector Dissipation: 120 W
• DC Current Gain (h_fe): 60 to 200
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SA1072 might only be marked "A1072".The complementary NPN transistor to the 2SA1072 is the 2SC2522.You can replace the 2SA1072 with the 2SA1041, 2SA1043, 2SA1072A, 2SA1073, 2SA908, 2SA909, 2SB697, 2SB697K, 2SB722 or 2SB723.