2SC1846 MBR, Silicon NPN Epitaxial Planar Transistor,
Vcbo 45V, Ic 1A, Tc 25°C 5W, 200MHz,
Case type: TO-126F ISOL,
Marking: C1846
ECB 
Náhrada pre 2SC1846 = BD139-16

For medium output power amplification.   
Complementary PNP 2SA0885, 2SA885,