This post explains for the transistor.
The Part Number is 2SD1886C.
The function of this semiconductor is 700V, 8A, NPN Transistor.
Manufacturer: Sanyo Semicon Device
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Description
The D1886C is NPN Triple Diffused Planar Silicon Transistor.
Features
• High speed.
• High breakdown voltage (VCBO=1500V).
• High reliability (Adoption of HVP process).
• Adoption of MBIT process.
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Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 1500 V
2. Collector to Emitter Voltage: Vceo = 700 V
3. Emitter to Base Voltage: Vebo = 5 V
4. Collector Current: Ic = 8 A
5. Collector Dissipation : Pc = 80 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C