View 2sd2571 datasheet:

2SD2571 TOSHIBA Transistor Silicon NPN Triple Diffused Type (Darlington power transistor) 2SD2571 High Power Switching Applications Unit: mm Hammer Drive, Pulse Motor Drive Applications • High DC current gain: hFE = 2000 (min) (V = 2 V, I = 1 A) CE C • Low saturation voltage: V = 1.5 V (max) (I = 1 A) CE (sat) C Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Collector-base voltage VCBO 100 ± 10 V Collector-emitter voltage VCEO 100 ± 10 V Emitter-base voltage VEBO 8 V DC IC 2 Collector current A Pulse ICP 3 Base current IB 0.5 A Ta = 25°C 2.0 Collector power JEDEC ? PC W dissipation Tc = 25°C 25 JEITA SC-67 Junction temperature Tj 150 °C TOSHIBA 2-10R1A Storage temperature range Tstg -55 to 150 °C Weight: 1.7 g (typ.) Equi