View smbta05 datasheet:

NPN Silicon AF Transistors SMBTA 05 SMBTA 06 High breakdown voltage Low collector-emitter saturation voltage Complementary types: SMBTA 55 SMBTA 56 (PNP) Type Marking Ordering Code Pin Configuration Package1) (tape and reel) 1 2 3 SMBTA 05 s1H Q68000-A3430 B E C SOT-23 SMBTA 06 s1G Q68000-A3428 Maximum Ratings Parameter Symbol Values Unit SMBTA 05 SMBTA 06 Collector-emitter voltage VCE0 60 80 V Collector-base voltage VCB0 60 80 Emitter-base voltage VEB0 4 Collector current IC 500 mA Peak collector current ICM 1 A Base current IB 100 mA Peak base current IBM 200 Total power dissipation, TS = 79 ?C Ptot 330 mW Junction temperature Tj 150 ?C Storage temperature range Tstg – 65 … + 150 Thermal Resistance Junction - ambient2) Rth JA ? 285 K/W Junction - soldering poi