mje3440.pdf datasheet:

MJE3440SILICON NPN TRANSISTOR SGS-THOMSON PREFERRED SALESTYPE NPN TRANSISTORDESCRIPTIONThe MJE3440 is a NPN silicon epitaxial planartransistors in SOT-32 plastic package. It isdesigned for use in consumer and industrialline-operated applications.123SOT-32INTERNAL SCHEMATIC DIAGRAMABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitVCBO 350 VCollector-Base Voltage (I = 0)EVCEO 250 VCollector-Emitter Voltage (I = 0)BV Emitter-Base Voltage (IC = 0) 5VEBOIC Collector Current 0.3 AI Base Current 0.15 ABP Total Power Dissipation at Tcase 25 oC 15 WtotoT -65 to +150 Cstg Storage TemperatureoTj 150 CMax. Operating Junction Temperature1/5June 1997MJE3440THERMAL DATAoRthj-case Thermal Resistance Junction-case Max8.33 C/WoELECTRICAL CHARACTERISTICS (Tcase =25 C unless otherwise specified)Symbol Parameter