BC548 NPN Transistor

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15.00Br

Highlights

  • BC548 is a NPN transistor
  • Bi-Polar NPN Transistor
  • DC Current Gain (hFE) is 800 maximum
  • Continuous Collector current (IC) is 500mA
  • Emitter Base Voltage (VBE) is 5V
  • Base Current(IB) is 5mA maximum

Description

  • BC548 is a NPN transistor so the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin. BC548 has a gain value of 110 to 800, this value determines the amplification capacity of the transistor. The maximum amount of current that could flow through the Collector pin is 500mA, hence we cannot connect loads that consume more than 500mA using this transistor. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to 5mA.
  • When this transistor is fully biased, it can allow a maximum of 500mA to flow across the collector and emitter. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (V­CE) or Base-Emitter (VBE) could be 200 and 900 mV respectively. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around 660 mV.

BC548 Equivalent Transistors

Applications

  • Driver Modules like Relay Driver, LED driver etc..
  • Amplifier modules like Audio amplifiers, signal Amplifier etc..
  • Darlington pair
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