View bc857b datasheet:

BC857B ® SMALL SIGNAL PNP TRANSISTOR PRELIMINARY DATA Type Marking BC857B 3F SILICON EPITAXIAL PLANAR PNP TRANSISTOR MINIATURE SOT-23 PLASTIC PACKAGE FOR SURFACE MOUNTING CIRCUITS TAPE AND REEL PACKING THE NPN COMPLEMENTARY TYPE IS BC847B APPLICATIONS SOT-23 WELL SUITABLE FOR PORTABLE EQUIPMENT SMALL LOAD SWITCH TRANSISTOR WITH HIGH GAIN AND LOW SATURATION VOLTAGE INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCBO Collector-Base Voltage (IE = 0) -50 V V Collector-Emitter Voltage (I = 0) -45 V CEO B VEBO Emitter-Base Voltage (IC = 0) -5 V IC Collector Current -100 mA ICM Collector Peak Current -200 mA Ptot Total Dissipation at TC = 25 oC 250 mW o T Storage Temperature -65 to 150 C stg o Tj Max. Operating Junction Tem