This post explains for the transistor 2SA1020.
The Part Number is A1020.
The function of this semiconductor is PNP Transistor.
Manufacturer: Toshiba Semiconductor
Preview images :
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Description
This is Silicon PNP Epitaxial Transistor. (PCT Process)
Applications:
1. Power Amplifier
2. Power Switching
Features
1. Low Collector saturation voltage: VCE (sat) = -0.5 V (max) (IC = -1 A)
2. High-speed switching: tstg = 1.0 µs (typ.)
3. Complementary to 2SC2655 […]
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = – 50 V
2. Collector to Emitter Voltage: Vceo = – 50 V
3. Emitter to Base Voltage: Vebo = – 5 V
4. Collector Current: Ic = – 2 A
5. Collector Dissipation : Pc = 900 mW
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C