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RUEF400 - LITTELFUSE

Description: Polymeric PTC Resettable Fuse 30V, 4A, Through Hole Radial, Disc, -40°C ~ 85°C

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Symbol
RUEF400 - LITTELFUSE - PCB symbol
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PCB Footprints
RUEF400 - LITTELFUSE PCB footprint - Other - Other - RUEF400-1
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3D Models
RUEF400 - LITTELFUSE - 3D model - Other - RUEF400-1
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RUEF400 Details

  • Manufacturer Part Number:

    RUEF400

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    RADIAL LEADED

  • Reach Compliance Code:

    Compliant

  • ECCN Code:

    EAR99

  • HTS Code:

    8533.40.80.70

  • Manufacturer:

    Littelfuse Inc

  • YTEOL:

    7

  • Additional Feature:

    Rmin@25 Deg Cel

  • Circuit RMS Voltage-Max:

    30 V

  • JESD-609 Code:

    e3

  • Mounting Feature:

    THROUGH HOLE MOUNT

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Height:

    19.3 mm

  • Package Length:

    14 mm

  • Package Shape:

    RECTANGULAR PACKAGE

  • Package Style:

    Radial

  • Package Width:

    3 mm

  • Packing Method:

    BULK

  • Reference Standard:

    CQC; CSA; TUV; UL

  • Resistance:

    0.01 Ω

  • Resistor Type:

    PTC RESETTABLE FUSE

  • Surface Mount:

    NO

  • Terminal Finish:

    MATTE TIN

  • Terminal Placement:

    RADIAL

  • Terminal Shape:

    WIRE

  • Thermistor Application:

    OVERCURRENT PROTECTION

  • Working Voltage:

    30 V

RUEF400 Frequently Asked Questions (FAQs)

  • A recommended PCB layout for optimal thermal performance of the RUEF400 includes a large copper pad underneath the device, multiple vias to dissipate heat, and a thermal relief pattern to minimize thermal resistance.
  • To ensure proper soldering, use a soldering iron with a temperature of 250°C to 260°C, and apply a small amount of solder paste to the PCB pads. Use a soldering technique that minimizes the time the iron is in contact with the component.
  • The RUEF400 has a maximum surge current rating of 400A for 8.3ms, as per the IEC 61000-4-5 standard.
  • Yes, the RUEF400 can be used in parallel to increase the current rating, but it is essential to ensure that the devices are properly matched and that the PCB layout is designed to minimize current imbalance between the devices.
  • Littelfuse recommends using the FH008-400 fuse holder or a similar clip that provides secure retention and minimizes thermal resistance.

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RUEF400 Overview

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RUEF400 Alternates

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Part Image RF2725-000 Littelfuse Inc

PTC Resettable Fuse
Part Image RF2731-000 Littelfuse Inc

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Part Image RF2729-000 Littelfuse Inc

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Part Image RUE400K TE Connectivity

RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED
Part Image RUE400-1 TE Connectivity

RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED
For a full list of alternate parts for RUEF400, check out Findchips.com