BC556 Transistor

  • Fast Shipping

    Receive products in amazing time
  • Easy Returns

    Return policy that lets you shop at ease
  • Always Authentic

    We only sell 100% authentic products
  • Secure Shopping

    Your data is always protected



  • BC556 PNP General Purpose Transistor is designed for general-purpose switching and amplification.
  • Maximum Collector Current -100mA
  • Maximum Base-Emitter Voltage -5V
  • Maximum Collector-Emitter Voltage -65V
  • Maximum Collector-Base Voltage -85V
  • Complement to BC546, BC547, BC548, BC549
  • Low current (max. 100 mA)
  • The BC556 is a PNP Transistor, hence we need to provide zero volts to the base of the transistor to turn it on. This transistor comes with many different versions, if you are using this transistor as an amplifier make sure you check the gain of the transistor from the datasheet that can be found down below, because of different versions the gain value differs which can completely ruin your calculations. The maximum collector current of this transistor is rated at -100mA with a peak current of -200mA, this transistor has an emitter-base voltage of -5V. This transistor has a collector-emitter voltage of -65V and a collector base voltage of -80V. This transistor can operate with 150*C.
  • When this transistor is in biased condition, then it can allow a maximum current of 100mA across CE(Collector-Emitter) Junction, this state of the transistor is called the saturation state, and driving a load that consumes more current than 100mA may damage the device in this condition. As you already may know a transistor is a current-controlled device so when the base current is removed the transistor becomes fully off, in this stage the transistor is working in its Cut-off Region and the Base Emitter voltage could be around 660 mV.
  • BC556 Transistor has a gain of 125 to 450 which determines the amplification capacity of the transistor, the peak current that can be flown through this transistor is 200maA, which combines with the gain value makes this transistor a perfect choice for a preamplifier for audio amplifier.


  • PNP transistor is made up of a doped N-Type material that is sanduzied in between two P-Type materials. In a PNP transistor holes are the majority charge carrier that means the holes are emitted by the collector and collected by the emitter, the main difference between the NPN and PNP transistor is the flow of electrons runs from collector to emitter but in a PNP transistor the electrons run from emitter to collector, as a result, a PNP transistor turns on when there is a low or 0V on the base of the transistor. Where an NPN transistor is on when a positive or high signal is applied.

BC556 Equivalent Transistor


  • BC556 can be employed in H- Bridge cirucits.
  • BC556 can also be employed in current mirror circuits.
  • BC556 finds applications in linear amplifiers.
  • BC556 is also used for impedance buffering.
  • BC556 can be deployed for switching applications.
  • BC556 can be used for designing Bistable multivibrators.
  • BC556 can be employed for Astable vibrator.
  • BC556 finds application in oscillator circuits.
  • BC556 transistor is also used in comparator circuits.
  • Build simple audio circuits
  • General-purpose amplifier
  • Driver Modules like Relay Driver, LED driver, etc..
  • Amplifier modules like Audio amplifiers, signal Amplifiers, etc..
  • Darlington pair
0 reviews

There are no reviews yet.

Be the first to review “BC556 Transistor”

You may also like…