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BC547B Transistor: Difference between revisions

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[[File:BC547B.jpg|225px|right]]
[[File:BC547B.jpg|225px|right]]
__TOC__
=====Description=====
A  '''BC547B''' Transistor is an '''NPN''' ''(Negative-Positive-Negative)'' [https://en.wikipedia.org/wiki/Bipolar_junction_transistor#NPN '''Bipolar Transistor''']: the most commonly used transistor configuration
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).
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.
'''Uses:''' As small signal and current amplifiers, for example, LED Drive Amplifiers, Oscillators, Audio Amplifiers, Relay Drive Amplifiers.
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* Current handling capacity 100 mAmps max.
* Current handling capacity 100 mAmps max.
* Amplification (gain) greater than 125.
* Amplification (gain) greater than 125.
{{Transistor & IC Buyers Guide}}




[[Category:Secondary]]
[[Category:Secondary]]
[[Category:Electronics and Control]]
[[Category:Electronics Components]]
[[Category:Materials and Components]]

Latest revision as of 09:28, 27 January 2017

BC547B.jpg


Description

A BC547B Transistor is an NPN (Negative-Positive-Negative) Bipolar Transistor: the most commonly used transistor configuration


The 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.


DT Online Buyers' Guide
Transistor selection NPN and PNP BC108 Transistor BC547B Transistor BFY51 Transistor Darlington Transistors 555 IC Timer 741 Operational Amplifier Quad 2-input NOR Gate 14 Pin Logic IC Quad 2-input NAND Gate 14-DIP Logic IC
Transistor selection NPN and PNP BC108 Transistor BC547B Transistor BFY51 Transistor Darlington Transistors 555 IC Timer 741 Operational Amplifier Quad 2-input NOR Gate 14 Pin Logic IC Quad 2-input NAND Gate 14-DIP Logic IC