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BC637 - onsemi

Description: Obsolete - High Current NPN Bipolar Transistor

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PCB Footprints
BC637 - onsemi PCB footprint - Other - Other - TO254P508X787-3
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BC637 - onsemi  - 3D model - Other - TO254P508X787-3
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BC637 Details

  • Manufacturer Part Number:

    BC637

  • Brand Name:

    onsemi

  • Pbfree Code:

    No

  • Rohs Code:

    No

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TO-92

  • Package Description:

    TO-226, 3 PIN

  • Pin Count:

    3

  • Manufacturer Package Code:

    29-11

  • Reach Compliance Code:

    Not Compliant

  • ECCN Code:

    EAR99

  • Factory Lead Time:

    4 Weeks

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Collector Current-Max (IC):

    1 A

  • Collector-Emitter Voltage-Max:

    60 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    40

  • 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):

    0.8 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    BOTTOM

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    200 MHz

BC637 Frequently Asked Questions (FAQs)

  • The maximum operating temperature range for the BC637 is -55°C to 150°C.
  • Yes, the BC637 can be used as a switch, but it's not recommended due to its relatively low current gain and high saturation voltage. It's better suited for amplifier applications.
  • The choice of resistor values depends on the specific application and desired operating point. A good starting point is to use the values recommended in the datasheet or to consult a transistor circuit design guide.
  • The maximum collector current that the BC637 can handle is 1 A, but this value can be derated based on the operating temperature and other factors.
  • The BC637 is not suitable for high-frequency applications due to its relatively low transition frequency (fT) of 100 MHz. For high-frequency applications, a transistor with a higher fT is recommended.

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BC637 Overview

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BC637 Alternates

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Image Part Number Model
Part Image BC637 Siemens

Small Signal Bipolar Transistor, 1A I(C), 1-Element, NPN, Silicon, TO-92

Part Image BC637-AMMO NXP Semiconductors

Small Signal Bipolar Transistor, 1A I(C), 60V V(BR)CEO, 1-Element, NPN, Silicon, TO-92

Part Image BC637RL onsemi

Small Signal Bipolar Transistor, 0.5A I(C), 60V V(BR)CEO, 1-Element, NPN, Silicon, TO-92

Part Image BC637 Crimson Semiconductor Inc

Small Signal Bipolar Transistor, 1A I(C), 60V V(BR)CEO, 1-Element, NPN, Silicon, TO-92

Part Image BC637RLRE onsemi

Small Signal Bipolar Transistor, 0.5A I(C), 60V V(BR)CEO, 1-Element, NPN, Silicon, TO-92

For a full list of alternate parts for BC637, check out Findchips.com