2SA1201 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.8 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 80 to 240
• Transition Frequency, min: 120 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The 2SA1201 transistor can have a current gain of 80 to 240. The gain of the 2SA1201-O will be in the range from 80 to 160, for the 2SA1201-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SA1201 might only be marked "A1201".The complementary NPN transistor to the 2SA1201 is the 2SC2881.You can replace the 2SA1201 with the KTA1661.