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BC557B - onsemi

Description: Obsolete - PNP Bipolar Transistor

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BC557B - onsemi PCB footprint - Other - Other - TO127P254X732-3
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BC557B - onsemi  - 3D model - Other - TO127P254X732-3
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BC557B Details

  • Manufacturer Part Number:

    BC557B

  • Brand Name:

    onsemi

  • Pbfree Code:

    No

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    CASE 29-11, TO-226, 3 PIN

  • Pin Count:

    3

  • Manufacturer Package Code:

    29-11

  • ECCN Code:

    EAR99

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Collector Current-Max (IC):

    0.1 A

  • Collector-Emitter Voltage-Max:

    45 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    180

  • JEDEC-95 Code:

    TO-92

  • JESD-30 Code:

    O-PBCY-T3

  • JESD-609 Code:

    e0

  • Number of Elements:

    1

  • Number of Terminals:

    3

  • Operating Temperature-Max:

    150 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Shape:

    ROUND

  • Package Style:

    CYLINDRICAL

  • Peak Reflow Temperature (Cel):

    235

  • Polarity/Channel Type:

    PNP

  • Power Dissipation-Max (Abs):

    0.625 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    BOTTOM

  • Transistor Application:

    AMPLIFIER

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    320 MHz

BC557B Frequently Asked Questions (FAQs)

  • The maximum operating temperature range for the BC557B is -55°C to 150°C.
  • Yes, the BC557B can be used as a switch, but it's not recommended due to its relatively low current gain (hFE) and high saturation voltage (VCE(sat)). It's better suited for amplifier applications.
  • To ensure the BC557B is properly biased for linear operation, you should provide a stable voltage supply, use a suitable biasing resistor network, and ensure the transistor is operated within its recommended operating conditions.
  • The maximum collector current rating for the BC557B is 1 A.
  • The BC557B is not suitable for high-frequency applications due to its relatively low transition frequency (fT) of 100 MHz. It's better suited for low-frequency applications such as audio amplifiers.

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BC557B Overview

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BC557B Alternates

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Image Part Number Model
Part Image BC557BZL1 onsemi

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-92

Part Image BC557BRL1 onsemi

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-92

Part Image BC557BRLRE onsemi

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-92

Part Image BC557B-AP Micro Commercial Components

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-92

Part Image BC557BRLRP Motorola Semiconductor Products

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-92

For a full list of alternate parts for BC557B, check out Findchips.com