BC556 Transistor pinout specification

BC556 Transistor pinout

BC556 transistor is a general-purpose (BJT) bipolar junction NPN three pin device. It is also commonly used in electronic circuits for amplification or switching purposes same like BC547 BC548 BC549 and etc. It is designed for low power applications and switchings. In this articles we are going to explain  specifications, pinout, uses alternate of BC556 and compliment:

BC556 Transistor pinout

BC556 Transistor Pinout Configuration

Pinout Configuration of BC547  is given below in the table.

Pin Number Pin Name Description
1 Collector Electrons Emitted from Emitter Collected by the Collector
2 Base Controls the biasing of the transistor
3 Emitter Electrons emitted from the emitter into the first PN junction

Specificaiton of Transistor BC556

Some important specifications of transistor BC556 are given below in the list. These specifications can vary slightly depending on the manufacturer and specific part number (e.g., BC556A, BC556B, BC556C). It is important to see the datasheet provided by the manufacturer.

  • Type: PNP BJT
  • Package Type: TO-92
  • Max Collector-Emitter Voltage (VCEO): -65V
  • Max Collector-Base Voltage (VCBO): -80V
  • Max Emitter-Base Voltage (VEBO): -5V
  • Collector Current (IC): -100mA
  • Power Dissipation (PD): 500mW
  • DC Current Gain (hFE): 110 to 800
  • Transition Frequency (fT): 150MHz
  • Operating Temperature: -55°C to +150°C

BC556 Equivalent Transistor

The Equivalent of BC556 is given below how the pin configuration may differ of alternat transitor. Please must determine pinout of other transistors while using any alternate.

BC557, BC558, BC559, S8550A1015BC5572N39062N4403BC8572N29072N5401

Basic Working of a PNP Transistor

556 transistor controls current flow between its collector and emitter terminals based on the current flowing into its base terminal. It amplifies small signals or acts as a switch when a sufficient voltage or current is applied on the base of transistor.

Applications of Transistor BC556

  • Audio amplifiers
  • Signal amplification stages
  • Switching circuits
  • Voltage regulators
  • LED drivers
  • Relay drivers
  • Oscillators
  • Logic circuits
  • Motor control circuits
  • Voltage amplification stages in communication circuits

Datasheet of  bc556

Data Sheet of BC556 is given in pdf file please open and read in detail

Complement of BC556

The complement of BC556 would be a transistor that have opposite polarity and characteristics.  BC546 transistor is best complement of BC556, which is an NPN transistor with similar specifications but opposite polarity. The BC546 can be used in circuits where an NPN transistor is required in place of BC556.

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