This post explains for the transistor.
The Part Number is 2SB778, B778.
The function of this semiconductor is -120V, -10A, PNP Transistor.
Manufacturer: Wing Shing Computer
Preview images :
Description
B778 is -120V, -10A, PNP Transistor.
Characteristics:
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = – 120 V
2. Collector to Emitter Voltage: Vceo = – 120 V
3. Emitter to Base Voltage: Vebo = – 6 V
4. Collector Current: Ic = – 10 A
5. Collector Dissipation : Pc = 80 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
Applications:
1. AUDIO POWER AMPLIFIER
2. DC TO DC CONVERTER
B778 PDF Datasheet
