The BC547B from Fairchild is a through hole, NPN epitaxial silicon transistor in TO-92 package. This device is designed for switching and amplification.
Collector to emitter breakdown voltage of 45V
Collector to emitter saturation voltage of 250mV
Power dissipation of 500mW
DC collector current of 100mA
DC current gain of 110 at Ic=2mA
Operating junction temperature range from -65°C to 150°C