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BC548 NPN Transistor (Pack of 5)

BC548 NPN Transistor (Pack of 5)

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  • BC548 is a semiconductor device used to amplify or switch electronic signals and electrical power.
  • It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.
  • A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals.

BC548 NPN Transistor (Pack of 5)

A BC548 transistor is a negative-positive-negative (NPN) transistor that is used for many purposes. Together with other electronic components, such as resistors, coils, and capacitors, it can be used as the active component for switches and amplifiers. Like all other NPN transistors, this type has an emitter terminal, a base or control terminal, and a collector terminal.

In a typical configuration, the current flowing from the base to the emitter controls the collector current. A short vertical line, which is the base, can indicate the transistor schematic for an NPN transistor, and the emitter, which is a diagonal line connecting to the base, is an arrowhead pointing away from the base.

read our blog explaining the bc 547 transistor pinout, which provides comprehensive information about the BC547 transistor, covering its basic knowledge, pin configuration, features, working states, circuit diagrams, and applications.

Package Includes:

  • 5 x BC548 NPN Transistor


Transistor Polarity NPN
Collector-Base Voltage (VCBO) 30VDC
Emitter-Base Voltage (VEBO) 6VDC
Continuous Collector Current (IC) 100mA
Output Capacitance (Cobo) 4.5pF
Transition Frequency (fT) 300MHz
Power Dissipation (PD) 625mW
Dimensions  5 x 4 x 3cms 
Weight  5 grams

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1. What is transistor BC548?

  • BC548 transistor is a NPN bipolar junction transistor in which the collector and emitter are open when the base pin is at ground and will get closed when a signal is provided to base pin.

2. What is the difference between BC547 and BC548?

  • Bc547 transistor have Collector-Emitter Voltage of 50V while BC548 has 30V. BC547 have 100mA Collector Current rating whereas BC548 has 100mA. The DC Current Gain of BC548 and BC548 ranges from 110 To 800 hFE. 

3. Is NPN a BC548?

  • A BC548 transistor is a multipurpose negative-positive-negative (NPN) transistor.

4. How do I use BC548 as a switch?

  • High value current can be given at the base of the transistor, which will makes a path for the collector current to go through the base towards the emitter. Transistor can be used as a switch if driven into the saturation region with enough base current.