BC559 Transistor pinout

BC559 General Purpose PNP Transistor

In this article, we are going to explain the BC559 transistor pinout, equivalent, features, uses, and other detail. Transistor BC559 is a general-purpose PNP transistor. It has many different versions. It can be used for amplification as well as in switching electronic circuits. The Collector−Emitter Voltages of BC559 are -30V, the Collector−Base Voltages are 30V, and the Emitter Base Voltage is 5V.

In biased conditions BC559 transistor can allow a Max current of -100mA across the Collector-Emitter Junction, it is the saturation state of the transistor. When the BC559 transistor is a current-controlled device.  when the base current is removed it becomes fully off, this condition of the transistor is called Cut-off Region.

BC559 transistor Pinout Configuration

The pin detail of 559 transistors is given below in the chart and also a clear picture.

Pin Number Pin Name Description
1 Collector Current is Emitted from Emitter
2 Base Controls the biasing
3 Emitter Current emitted from the emitter
BC559 General Purpose PNP Transistor

Characteristics of BC559 Transistor

  • Available package: TO-92
  • Transistor type: PNP
  • Max collector-emitter voltage: -30 V
  • Collector-base Voltage, maximum: -30 V
  • Emitter-base Voltage, maximum: -5 V
  • Collector current − Continuous, maximum: -0.1 A
  • Transistor collector dissipation: 0.5 W
  • DC Current Gain (hfe) Max: 110 to 800
  • Minimum transition frequency: 150 MHz
  • Max noise Figure: 1 dB
  • Max and Min operating and storage Junction temperature range: -65 to +150 °C

Replacement and Equivalent for BC559 transistor

The alternate of BC559 transistor are BC556, BC557, BC558, A1015, BC557, 2N3906, 2N4403, BC857, 2N2907, 2N5401 and many other that have near measurement and powers.

Complementary NPN transistor

The complementary NPN transistor of BC559 is the BC549, BC548, BC547, C945,C828.

SMD Version of BC559 transistor

The SMD version of BC559 are BC858W (SOT-323), BC858 (SOT-23), BC859 (SOT-23) and BC859W (SOT-323). These transistors are similar parameters and the same type.

Datasheet of BC559 Transistor

The datasheet of 559 transistors is given below in the diagram


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