This post explains for the transistor C5353.
The Part Number is 2SC5353.
The function of this transistor is NPN Transistor.
The package is TO-220 Type
Preview images :
C5353 is TOSHIBA Transistor Silicon NPN Triple Diffused Type (PCT process).
1. Switching Regulator and High Voltage Switching
2. High-Speed DC-DC Converter Applications Unit: mm •
• Excellent switching times: tr = 0.7 μs (max), tf = 0.5 μs (max)
• High collectors breakdown voltage: VCEO = 800 V […]
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 900 V
2. Collector to Emitter Voltage: Vceo = 800 V
3. Emitter to Base Voltage: Vebo = 7 V
4. Collector Current: Ic = 3A
5. Total Dissipation : Pc = 2.0 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C