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BC857B Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
BC857BPHILIPS3000Yes

BC857B is a general-purpose PNP transistor manufactured by various semiconductor companies, including FSC (Fairchild Semiconductor).

The BC857B is a general-purpose PNP transistor manufactured by various semiconductor companies, including FSC (Fairchild Semiconductor).

Key specifications:

  • Type: PNP bipolar junction transistor (BJT)
  • Package: SOT-23 (Surface Mount)
  • Collector-Base Voltage (VCBO): -50V
  • Collector-Emitter Voltage (VCEO): -45V
  • Emitter-Base Voltage (VEBO): -5V
  • Collector Current (IC): -100mA
  • Power Dissipation (Ptot): 250mW
  • DC Current Gain (hFE): 125–800 (depending on grade)
  • Transition Frequency (fT): 100MHz (typical)
  • Operating Temperature: -55°C to +150°C

The BC857B is commonly used in amplification and switching applications. FSC (Fairchild Semiconductor) may have provided this part under similar specifications before its acquisition by ON Semiconductor.

For exact FSC-specific datasheets, refer to historical Fairchild Semiconductor documentation.

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