2SD1351, KEC Korea Electronics, Silicon NPN Power Transistor,
Vcbo 60V, Vceo 60V, Ic 3A, Tc 25°C 30W, 3MHz, tF 0.65µs
Case type: TO-220,
Marking: D1351, Rank Y: hFE 100..200
BCE 

Complementary PNP 2SB988