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BC547A - onsemi

Description: Obsolete - NPN Epitaxial Silicon Transistor

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Symbol
BC547A - onsemi - PCB symbol
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PCB Footprints
BC547A - onsemi PCB footprint - Other - Other - TO127P254X732-3
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3D Models
BC547A - onsemi - 3D model - Other - TO127P254X732-3
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BC547A Details

  • Manufacturer Part Number:

    BC547A

  • Brand Name:

    onsemi

  • Pbfree Code:

    No

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    CASE 29-04, TO-226AA, 3 PIN

  • Pin Count:

    3

  • Manufacturer Package Code:

    29-11

  • ECCN Code:

    EAR99

  • Factory Lead Time:

    4 Weeks

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Collector Current-Max (IC):

    0.1 A

  • Collector-Emitter Voltage-Max:

    45 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    110

  • 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:

    NPN

  • Power Dissipation-Max (Abs):

    0.625 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    BOTTOM

  • Transistor Application:

    AMPLIFIER

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    300 MHz

BC547A Frequently Asked Questions (FAQs)

  • The BC547A can operate safely between -55°C to 150°C, but the recommended operating temperature range is -40°C to 125°C for optimal performance.
  • To ensure linear operation, the BC547A should be biased with a collector-emitter voltage (Vce) between 2-10V, and a base-emitter voltage (Vbe) around 0.7V. The collector current (Ic) should be limited to the recommended maximum value.
  • The maximum collector current (Ic) for the BC547A is 100mA. Exceeding this value can lead to device damage or reduced lifespan.
  • Yes, the BC547A can be used as a switch. However, it's essential to ensure the transistor is fully saturated (Vce(sat) < 0.5V) and the base current is sufficient to drive the required collector current. Additionally, consider the switching frequency, as high frequencies can lead to increased power losses.
  • Choose resistor values that ensure the base current is sufficient to drive the required collector current, while also limiting the power dissipation in the transistor. A general rule of thumb is to use a base resistor (Rb) around 1-2 kΩ and a collector resistor (Rc) around 1-5 kΩ, depending on the specific application.

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BC547A Alternates

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Image Part Number Model
Part Image BC547A Microchip Technology Inc

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92
Part Image BC547A Motorola Semiconductor Products

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92
Part Image BC547ARL1G onsemi

Power Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, Plastic/Epoxy, 3 Pin
Part Image BC547A Diodes Incorporated

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92
Part Image BC547A TDK Micronas GmbH

Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92
For a full list of alternate parts for BC547A, check out Findchips.com