The 2SA966 transistor can have a current gain of 100 to 320. The gain of the 2SA966-O will be in the range from 100 to 200, for the 2SA966-Y it will be in the range from 160 to 320.

Characteristics of 2SA966 Transistor
- Type: PNP
- Collector-Emitter Voltage, max: -30 V
- Collector-Base Voltage, max: -30 V
- Emitter-Base Voltage, max: -5 V
- Collector Current − Continuous, max: -1.5 A
- Collector Dissipation: 0.9 W
- DC Current Gain (hfe): 100 to 320
- Transition Frequency, min: 120 MHz
- Operating and Storage Junction Temperature Range: -55 to +150 °C
- Package: TO-92MOD
