2SC3148 TOSHIBA, Silicon NPN High Voltage, High speed Transistor, 
Vcbo 900V, Vceo 800V, Ic 3A, Tc 25°C 40W, 18MHz, 
Case type: TO-220, 

Marking: C3148, 
1.B
2.4.C
3.E 

High collector breakdown voltage: VCEO=800V(Min),
Excellent switching time: tr=1.0µs(Max.) tf=1.0µs Max Ic=0.8A