View 2n3903re datasheet:

MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by 2N3903/D General Purpose Transistors 2N3903 NPN Silicon * 2N3904 *Motorola Preferred Device COLLECTOR 3 2 BASE 1 EMITTER 1 2 3 MAXIMUM RATINGS CASE 29–04, STYLE 1 Rating Symbol Value Unit TO–92 (TO–226AA) Collector–Emitter Voltage VCEO 40 Vdc Collector–Base Voltage VCBO 60 Vdc Emitter–Base Voltage VEBO 6.0 Vdc Collector Current — Continuous IC 200 mAdc Total Device Dissipation @ TA = 25°C PD 625 mW Derate above 25°C 5.0 mW/°C Total Device Dissipation @ TC = 25°C PD 1.5 Watts Derate above 25°C 12 mW/°C Operating and Storage Junction TJ, Tstg –55 to +150 °C Temperature Range THERMAL CHARACTERISTICS* Characteristic Symbol Max Unit Thermal Resistance, Junction to Ambient RqJA 200 °C/W Thermal Resis