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MF-RM055/240-2 - Bourns

Description: Polymeric PTC Resettable Fuse 240V (265V Int) 550 mA Ih Through Hole Radial, Disc , 550 mA , 450 mOhms , -20°C ~ 85°C

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PCB Footprints
MF-RM055/240-2 - Bourns PCB footprint - Other - Other - 14.00mm x 4.10mm_2026-1.1
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3D Models
MF-RM055/240-2 - Bourns  - 3D model - Other - 14.00mm x 4.10mm_2026-1.1
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MF-RM055/240-2 Details

  • Manufacturer Part Number:

    MF-RM055/240-2

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    RADIAL LEADED

  • Reach Compliance Code:

    Compliant

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8533.40.80.70

  • Factory Lead Time:

    8 Weeks

  • Manufacturer:

    Bourns Inc

  • YTEOL:

    7

  • Additional Feature:

    FLAME PROOF, RMIN AT 23 DEG CEL

  • JESD-609 Code:

    e3

  • Mounting Feature:

    THROUGH HOLE MOUNT

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -20 °C

  • Package Height:

    22.4 mm

  • Package Length:

    14 mm

  • Package Style:

    Radial

  • Package Width:

    4.1 mm

  • Packing Method:

    TR, 14.5 INCH

  • Reference Standard:

    CUL; TUV; UL

  • Resistance:

    0.45 Ω

  • Resistor Type:

    PTC RESETTABLE FUSE

  • Surface Mount:

    NO

  • Terminal Finish:

    Tin (Sn)

  • Terminal Placement:

    RADIAL

  • Terminal Shape:

    WIRE

  • Thermistor Application:

    OVERCURRENT PROTECTION

  • Working Voltage:

    240 V

MF-RM055/240-2 Frequently Asked Questions (FAQs)

  • Bourns provides a recommended PCB layout and land pattern in their application notes. It's essential to follow these guidelines to ensure proper thermal management, minimize electromagnetic interference, and optimize the component's performance.
  • To ensure accuracy and reliability in high-temperature environments, it's crucial to consider the fuse's derating curve, which is typically provided in the datasheet. Additionally, proper PCB design, thermal management, and component selection can help mitigate the effects of high temperatures.
  • Exceeding the maximum voltage rating can lead to premature failure, reduced lifespan, or even catastrophic failure. To prevent this, ensure that the voltage rating is not exceeded, and consider using overvoltage protection devices or surge protectors to safeguard the circuit.
  • To select the correct fuse, consider the application's specific requirements, such as the maximum current, voltage, and fault current. Consult the datasheet and application notes, and consider factors like the fuse's melting I²t, response time, and interrupting rating.
  • To prevent damage or degradation, store the fuse in a cool, dry place, away from direct sunlight and moisture. Handle the component by the body, avoiding touching the leads or sensitive areas. Follow proper electrostatic discharge (ESD) precautions, and consider using anti-static packaging and handling materials.

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