Collector-Base Voltage
BC547/550 50
Collector-Emitter Voltage
BC547/550 45
Emitter-Base Voltage
BC546/547 5
Collector Current (DC)
100 mA
Collector Power Dissipation
500 mW
DC Current Gain
VCE=5V, IC=2mA 110-800
http://media.nkcelectronics.com/datasheet/s8050.pdf
Collector-Base Voltage V
30
Collector-Emitter Voltage
20
Emitter-Base Voltage
5
Collector Dissipation(Ta=25°)
1 W
Collector Current
Ic 700 mA
DC Current Gain(note)
hFE 110-400
The BC547 is categorized as "designed for use as general purpose amplifiers and switches requiring collector currents to 300 mA."
The S8050 is categorized as "a low voltage high current small signal NPN transistor, designed for Class B push-pull audio amplifier and general purpose applications."