View source for BC547B Transistor

[[File:BC547B.jpg|225px|right]]
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=====Description=====

The [https://en.wikipedia.org/wiki/BC548 '''BC547B'''] Collector is connected to the positive (+ve) supply via the load. NB If the load is inductive i.e. has coil windings such as a relay, solenoid or motor, then it is usual to connect a diode across it to prevent the Back EMF from damaging the transistor. (Cathode to supply). The input is connected to the Base via a limiting resistor (typically 1K). The Emitter is connected to the negative (-ve) supply (0V).


=====Description and Applications=====

'''Uses:''' As small signal and current amplifiers, for example, LED Drive Amplifiers, Oscillators, Audio Amplifiers, Relay Drive Amplifiers.


'''Data:''' Voltage between Collector and Emitter 3 - 45 Volts max.
* Power handling capacity 500 mWatts max.
* Current handling capacity 100 mAmps max.
* Amplification (gain) greater than 125.


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[[Category:Secondary]]
[[Category:Electronics Components]]