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2N4857 - InterFET

Description: JFET N-Channel -40V Low Noise

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Symbol
2N4857 - InterFET - PCB symbol
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PCB Footprints
2N4857 - InterFET PCB footprint - Other - Other - TO-18
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3D Models
2N4857 - InterFET - 3D model - Other - TO-18
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2N4857 Details

  • Manufacturer Part Number:

    2N4857

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Contact Manufacturer

  • Package Description:

    TO-18, 3 PIN

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.29.00.95

  • Manufacturer:

    InterFET Corporation

  • Case Connection:

    GATE

  • Configuration:

    SINGLE

  • Drain-source On Resistance-Max:

    40 Ω

  • FET Technology:

    JUNCTION

  • JEDEC-95 Code:

    TO-18

  • JESD-30 Code:

    O-MBCY-W3

  • Number of Elements:

    1

  • Number of Terminals:

    3

  • Operating Mode:

    DEPLETION MODE

  • Operating Temperature-Max:

    150 °C

  • Package Body Material:

    METAL

  • Package Shape:

    ROUND

  • Package Style:

    CYLINDRICAL

  • Polarity/Channel Type:

    N-CHANNEL

  • Power Dissipation Ambient-Max:

    1.8 W

  • Power Dissipation-Max (Abs):

    0.36 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Form:

    WIRE

  • Terminal Position:

    BOTTOM

  • Transistor Application:

    SWITCHING

  • Transistor Element Material:

    SILICON

2N4857 Frequently Asked Questions (FAQs)

  • The maximum operating temperature range for the 2N4857 is -55°C to 150°C, although it's recommended to operate within -40°C to 125°C for optimal performance.
  • To ensure proper biasing, make sure to provide a stable voltage supply, and set the gate-source voltage (Vgs) within the recommended range of -2V to 2V. Also, ensure the drain-source voltage (Vds) is within the recommended range of 0V to 250V.
  • The recommended gate drive voltage for the 2N4857 is typically between 10V to 15V, although it can operate with a gate drive voltage as low as 5V. However, a higher gate drive voltage may be required for high-frequency applications.
  • To protect the 2N4857 from ESD, handle the device with an anti-static wrist strap or mat, and ensure the PCB is designed with ESD protection in mind, such as using ESD diodes or resistors.
  • The maximum current rating for the 2N4857 is 2A, although it's recommended to operate within 1A for optimal performance and to prevent overheating.

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2N4857 Overview

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