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RXEF250-2 - LITTELFUSE

Description: Resettable Fuses - PPTC Radial Lead 2.5A 72V 40A Imax

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RXEF250-2 - LITTELFUSE PCB footprint - Other - Other - RXEF250-2-2
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3D Models
RXEF250-2 - LITTELFUSE  - 3D model - Other - RXEF250-2-2
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RXEF250-2 Details

  • Manufacturer Part Number:

    RXEF250-2

  • 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:

    7.4

  • Additional Feature:

    Rmax:0.08 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:

    25.4 mm

  • Package Length:

    20.8 mm

  • Package Shape:

    DISK PACKAGE

  • Package Style:

    Radial

  • Package Width:

    3 mm

  • Packing Method:

    TR, 15 INCH

  • Reference Standard:

    CSA; CQC; TUV; UL

  • Resistance:

    0.05 Ω

  • Resistor Type:

    PTC RESETTABLE FUSE

  • Surface Mount:

    NO

  • Terminal Placement:

    RADIAL

  • Terminal Shape:

    WIRE

  • Working Voltage:

    72 V

RXEF250-2 Frequently Asked Questions (FAQs)

  • A good PCB layout for the RXEF250-2 should include a solid ground plane, short and direct traces, and a decoupling capacitor (e.g., 0.1uF) between the VIN and GND pins. Additionally, keep the RXEF250-2 away from high-frequency noise sources and ensure good thermal dissipation.
  • Choose an input capacitor with a voltage rating that exceeds the maximum input voltage, a capacitance value between 1uF to 10uF, and an ESR (Equivalent Series Resistance) that is as low as possible. A ceramic or film capacitor with an X7R or X5R dielectric is recommended.
  • The maximum ambient temperature for the RXEF250-2 is 85°C, but it can be derated to 70°C for high-reliability applications. Ensure good airflow and heat dissipation to prevent overheating.
  • Yes, the RXEF250-2 is designed to withstand vibrations up to 10G. However, ensure that the PCB is securely fastened and the RXEF250-2 is properly soldered to prevent mechanical stress.
  • Start by checking the input voltage, output voltage, and current consumption. Verify that the input capacitor is properly sized and the PCB layout is correct. Use an oscilloscope to check for noise, oscillations, or other anomalies. Consult the datasheet and application notes for troubleshooting guides.

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