SEM (Shindengen Electric Manufacturing) 2SD1023-4100 Mfr Package Description: TO-220, 3 PIN Package Shape: RECTANGULAR Package Style: FLANGE MOUNT Terminal Form: THROUGH-HOLE Terminal Position: SINGLE Number of Terminals: 3 Package Body Material: PLASTIC/EPOXY Configuration: DARLINGTON Case Connection: COLLECTOR Number of Elements: 1 Transistor Element Material: SILICON Transistor Polarity: NPN Transistor Type: GENERAL PURPOSE POWER DC Current Gain-Min (hFE): 1500 Collector Current-Max (IC): 5 A Collector-emitter Voltage-Max: 200 V Transition Frequency-Nom (fT): 20 MHz