BC547 BC548 BC557 NPN 30V 0.1A Transistor in Pakistan


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BC548 is an 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 500 mA using this transistor. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to 5mA.

Applications Of BC 548 Transistor

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

Features Of BC548 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

Additional information


BC547, BC548, BC557


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