This post explains for the transistor.
The Part Number is C3679, 2SC3679.
The function of this semiconductor is 800V, 5A, NPN Transistor.
The package is TO-3P Type.
Manufacturer: Sanken electric
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Description
C3679 is 800V, 5A, Silicon NPN Triple Diffused Planar Transistor. High Voltage Switching Transistor.
Preview images :
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 = 5 A
5. Collector Dissipation : Pc = 100 W ( Tc=25°C )
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
Application:
1. Switching Regulator and General Purpose
C3679 PDF Datasheet
