This post explains for the transistor.
The Part Number is C2810, 2SC2810.
The function of this semiconductor is 400V, 7A, NPN transistor.
Manufacturer: SavantIC
Preview images :
Description
C2810 is Silicon NPN Power Transistor.
Features
1. With TO-220C package
2. High voltage,High speed
3. For power switching applications
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 500 V
2. Collector to Emitter Voltage: Vceo = 400 V
3. Emitter to Base Voltage: Vebo = 7 V
4. Collector Current: Ic = 7 A
5. Collector Dissipation : Pc = 50
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C