2SA1539-F Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -3 V
• Collector Current − Continuous, max: -0.3 A
• Collector Dissipation: 8 W
• DC Current Gain (h_fe): 160 to 320
• Transition Frequency, min: 400 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126F

Here is an image showing the pin diagram of this transistor.The 2SA1539-F transistor can have a current gain of 160 to 320. The gain of the 2SA1539 will be in the range from 40 to 320, for the 2SA1539-C it will be in the range from 40 to 80, for the 2SA1539-D it will be in the range from 60 to 120, for the 2SA1539-E it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SA1539-F might only be marked "A1539-F".The complementary NPN transistor to the 2SA1539-F is the 2SC3954-F.You can replace the 2SA1539-F with the 2SA1021, 2SA1021-Y, 2SA1220, 2SA1220-P, 2SA1220A, 2SA1220A-P, 2SA1248, 2SA1249, 2SA1405, 2SA1405-F, 2SA1507, 2SA795, 2SA795A, 2SB631K, 2SB631K-F, 2SB649, 2SB649-D, KSA1220, KSA1220-Y, KSA1220A, KSA1220A-Y, KTA1704 or KTA1704-GR.