2SA1020 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -50 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -2 A
• Collector Dissipation: 0.9 W
• DC Current Gain (h_fe): 70 to 240
• Transition Frequency, min: 40 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SA1020 transistor can have a current gain of 70 to 240. The gain of the 2SA1020O will be in the range from 70 to 140, for the 2SA1020Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SA1020 might only be marked "A1020".The complementary NPN transistor to the 2SA1020 is the 2SC2655.The 2DA1213 (SOT-89), 2SA1213 (SOT-89), 2SA1364 (SOT-89), BCP52 (SOT-223) and BCX52 (SOT-89) is the SMD version of the 2SA1020 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1020 with the 2SA1315 or KTA1281.