bc546 bc547 bc548.pdf datasheet:

BC546/BC547/BC548(NPN)TO-92 Bipolar TransistorsTO-92 1. COLLECTOR 2. BASE 3. EMITTERFeaturesHigh Voltage Complement to BC556,BC557,BC558 MAXIMUM RATINGS (TA=25 unless otherwise noted) Parameter Symbol Value UnitsCollector-Base Voltage BC546 80 BC547 50 VCBO V BC548 30 Collector-Emitter Voltage BC546 65 VCEO BC547 45 V BC548 30 6 VEBO Emitter-Base Voltage V Dimensions in inches and (millimeters)Collector Current -Continuous 100 IC mA Total Device Dissipation 625 PD mW Junction Temperature 150 TJ Storage Temperature -55-150Tstg ELECTRICAL CHARACTERISTICS (Tamb=25 unless otherwise specified) Parameter Symbol Test conditions MIN MAX UNITCollector-base breakdown voltage BC546 80 BC547 VCBO IC= 100A , IE=0 50 V BC548 30 Collector-emitter breakdown voltage BC546 65 BC547 VCEO IC= 1mA , IB=0 45