This post explains for the transistor.
The Part Number is C4159, 2SC4159.
The function of this semiconductor is -160V, -1.5A, NPN Transistor.
The package is TO-220ML Type
Manufacturer: Sanyo Semicon Device
Preview images :
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Description
The C4159 is -160V, -1.5A, NPN Epitaxial Planar Silicon Transistor.
Features
1. Micaless package facilitating mounting
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Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 180 V
2. Collector to Emitter Voltage: Vceo = 160 V
3. Emitter to Base Voltage: Vebo = 6 V
4. Collector Current: Ic = 1.5 A
5. Collector Dissipation : Pc = 15 W ( Tc=25°C )
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
Applications:
1. High-voltage switching, AF power amplifier, 100W output predrivers