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RXEF185-1 - LITTELFUSE

Description: Polymeric PTC Resettable Fuse 72V 1.85 A Ih Through Hole Radial, Disc

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PCB Footprints
RXEF185-1 - LITTELFUSE PCB footprint - Other - Other - RXEF185-1-2
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3D Models
RXEF185-1 - LITTELFUSE  - 3D model - Other - RXEF185-1-2
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RXEF185-1 Details

  • Manufacturer Part Number:

    RXEF185-1

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    RADIAL LEADED

  • Reach Compliance Code:

    Unknown

  • ECCN Code:

    EAR99

  • HTS Code:

    8533.40.80.70

  • Manufacturer:

    Littelfuse Inc

  • YTEOL:

    7.4

  • Additional Feature:

    Rmax:0.12 OHMS AT 20 DEG CEL

  • Circuit RMS Voltage-Max:

    72 V

  • Mounting Feature:

    THROUGH HOLE MOUNT

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Height:

    22.4 mm

  • Package Length:

    17.5 mm

  • Package Shape:

    DISK PACKAGE

  • Package Style:

    Radial

  • Package Width:

    3 mm

  • Reference Standard:

    CQC, CSA, TUV, UL

  • Resistance:

    0.08 Ω

  • Resistor Type:

    PTC RESETTABLE FUSE

  • Surface Mount:

    NO

  • Terminal Placement:

    RADIAL

  • Terminal Shape:

    WIRE

  • Thermistor Application:

    OVERCURRENT PROTECTION

  • Working Voltage:

    72 V

RXEF185-1 Frequently Asked Questions (FAQs)

  • A good PCB layout for the RXEF185-1 should ensure minimal inductance and resistance in the circuit. Keep the traces short and wide, and use a solid ground plane to reduce noise and EMI. Also, place the fuse as close as possible to the power source to minimize voltage drops.
  • The RXEF185-1 is designed to operate up to 125°C, but its performance may degrade at high temperatures. The fuse's melting point is around 185°C, but it's recommended to derate the fuse's current rating by 2-3% per degree Celsius above 85°C to ensure reliable operation.
  • Yes, the RXEF185-1 is designed to withstand vibrations up to 10G. However, it's essential to ensure the fuse is properly secured to the PCB using a suitable mounting method, such as soldering or using a fuse clip, to prevent mechanical stress and damage.
  • Store the RXEF185-1 in a dry, cool place away from direct sunlight and moisture. Handle the fuse by the body, avoiding touching the leads or glass body to prevent damage or contamination. Use anti-static packaging and follow proper ESD handling procedures to prevent damage.
  • The RXEF185-1 is designed to handle high inrush currents, but it's essential to consider the fuse's I²t rating and the circuit's inrush current profile. Ensure the fuse's I²t rating is sufficient to handle the inrush current, and consider using a fuse with a higher I²t rating or a slow-blow fuse if necessary.

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RXEF185-1 Overview

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