Description

The BC557 is a popular PNP bipolar junction transistor (BJT) used for low-current and medium-voltage electronic applications. It is mainly used in signal amplification and switching circuits where PNP configuration is required. With a maximum collector current of 100mA and voltage rating of 45V, it ensures stable operation and reliability in both analog and digital circuits.

Key Features:

  • Type: PNP Bipolar Junction Transistor

  • Collector-Emitter Voltage (Vce): 45V

  • Collector Current (Ic): 100mA

  • DC Current Gain (hFE): 110 – 800

  • Low noise and high gain

  • TO-92 package

  • Suitable for PNP switching and amplifier circuits

Applications:

  • Signal amplification

  • Low-power switching

  • Audio and sensor circuits

  • Complementary pair with BC547 (NPN)

  • Arduino and DIY electronics projects

Condition:
Brand New – Original Component

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