NPN Transistor BC547 B (pack of 5) – Online India

BC547 B NPN general-purpose transistors, especially suited for use in driver stages of audio amplifiers, HI-FI amplifiers, signal processing circuits of television receivers.

Here you can buy the BC547B NPN general-purpose transistors (pack of 5) module in India. Order multiple products and save per-item shipping cost in India. Local Pickup is also available in Delhi-NCR.

SAVE MORE! By buying the combination instead, see below for this offer.



Circuit Uncle has in its stock just for you to buy online in India, the NPN BC547 B bipolar transistor. This transistor consists of three pins and is breadboard friendly. These are commonly used for building amplifiers.

  • Operating and Storage Junction Temperature Range: −55 to +150 °C
  • Max.Collector Current−Continuous : 100mA
  • Max.Collector-Emitter Voltage, V_CEO: 45V DC
  • Max.Emitter – Base Voltage, V_EBO: 6V DC
  • DC Collector Current: 100mA
  • DC Current Gain h_FE: 110
  • To-92 Package

Pin Configuration of BC547 NPN transistor

Pin Number Pin Name Description


Collector Current flows in through collector


Base Controls the biasing of transistor


Emitter Current Drains out through emitter


BC547 is an NPN transistor and when the base pin is supplied ground voltage the collector and emitter are in reverse bias and whereas they are Forward biased when a positive signal is provided to base. A maximum of 100mA of current can flow through the collector of this transistor (saturation current), and this mode of operation is also known as saturation mode.  This BC547 NPN transistor is easy to use and inexpensive, making them popular among students and educators in India and worldwide. This transistor is also included in the curriculum of almost all electronics technical curriculum of institutes.

BC547 NPN transistors generally used as an Amplifier for which it is operated in the Active Region. It can amplify power, voltage, and current using different configurations as:

  1. Common emitter
  2. Common collector
  3. Common base

*As an amplifier BC547 is mostly used in a common emitter configuration.


  • Driver Modules e.g., Relay and LED Driver
  • Amplifier modules like Audio amplifiers
  • Used to build Darlington pair

Substitutes for BC547 NPN Transistor are: 2N2222, 2N3904, PN100, 2N4401, BC337.

It’s PNP complement is BC557.

For Datasheet click here.

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Additional information

Weight 300 g
Dimensions 180 × 70 × 1 cm


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