2SC3852A SANKEN, Silicon NPN Power Transistor, 
Vcbo 100V, Vceo 80V, Ic 3A, Tc 25°C 25W, 15MHz, hFE min.500, 
Case type: TO-220F ISOL,
Marking: C3852A,
BCE 
Driver for Solenoid and Motor, Series Regulator and General Purpose..