2sd1866 2sd2212 2sd2212 2sd2143 2sd1866 2sd2397.pdf datasheet:

2SD2212 / 2SD2143 / 2SD1866 / 2SD2397TransistorsMedium Power Transistor(Motor, Relay drive) (6010V, 2A)2SD2212 / 2SD2143 / 2SD1866 / 2SD2397 Features External dimensions (Units : mm)1) Built-in zener diode between collector and base.2) Strong protection against reverse surges due to "L"4.02SD22121.0 2.5 0.5loads.(1)3) Built-in resistor between base and emitter.(2)4) Built-in damper diode.(3)(1) Base(Gate)ROHM : MPT3(2) Collector(Drain)EIAJ : SC-62(3) Emitter(Source) Absolute maximum ratings (Ta = 25C)Parameter Symbol Limits UnitCollector-base voltage VCBO 6010 V5.5 1.5Collector-emitter voltage VCES 6010 V2SD2143Emitter-base voltage VEBO 6 V2 A(DC)0.9Collector current IC3 A(Pulse)*1C0.5W2SD2212 2*2Collector power 2SD2143 10 W(Tc=25C)PC0.8Min.dissipation 1 W 1.52SD1866*3(1) Base(Gate)2.5