EMI Copper Foil braided Wire shielding sleeve

MJ FLEX MBS-CFW is a lightweight expandable shielding sleeve braided with conductive copper foil filaments. It forms a flexible conductive layer around cables and wire bundles while adding less bulk than many conventional solid-wire metal braids. The construction is designed for signal wiring, electronics and space-conscious harnesses that need EMI shielding together with easy routing and a softer, more textile-like handling profile.

  • Material :

    Tinned Copper Wire+Nylon Monofilament
  • Working Temperature :

    -40℃~ +125℃
  • Flammability :

    Self-extinguishing
  • Standard Color :

    Tinned Copper
  • Certification :

    Rohs,Reach
  • MOQ :

    500 M
  • Why Choose MBS-CFW Copper Foil Braided Sleeving?

    • Reduce shielding weight and bulk

    Foil-based conductive filaments create a lightweight braid for compact electronic assemblies and mobile equipment.

    • Protect delicate signal wiring

    The flexible sleeve adds conductive coverage without the stiffness of a heavy metal-wire braid.

    • Route through confined spaces 

    Expandable construction follows bends and changing bundle profiles in densely packed equipment.

    • Support retrofit EMC improvements

    The sleeve can be installed over accessible cable assemblies and connected to a suitable grounding system.

     

    Key Features

    1. Conductive copper foil filaments

    Provides a lightweight metallic shielding structure.

    2. Low-bulk braided construction

    Suitable for assemblies where weight and routing space are limited.

    3. Expandable cable fit

    Accommodates a defined range of cable and harness diameters.

    4. Flexible handling

    Follows curved routes and moving or serviceable cable groups.

    5. EMI and RFI shielding support

    Helps control radiated interference when correctly terminated.

    6. Cable-bundle organization

    Combines multiple wires under one conductive protective layer.

    7. Application-specific customization 

    Diameter, braid density, filament construction, length and packaging can be reviewed.

     

    Technical Data

    Material Tinned Copper Foil & Nylon Multifilament
    Construction    Expandable lightweight braid
    Shield coverage Project-specific braid coverage    
    Standard appearance Metallic copper tone
    Working Temperature -40℃~+125℃
    Flammability Self-extinguishing
    Shielding Effectiveness ≥75 dB (30 MHz-3GHz) per GB/T 30142-2013.
    Standard Color Tinned Copper
    Compliance documentatio RoHS, REACH
    Cutting Tool Scissor

    Specifications
    Part No
    Flat Width(W)
    Expanded Range(mm)
    Packing
    Length
    (m/spool)
    Inch
    mm
    Min.(I)
    Max.(O)
    MBS-CFW-004-TC 
    1/8”
    4 3 7 250
    MBS-CFW-006-TC 
    1/4”
    6 4 9 200
    MBS-CFW-008-TC 
    5/16”
    8 6 12 150
    MBS-CFW-010-TC 
    3/8”
    10 7 16 150
    MBS-CFW-012-TC 
    1/2”
    12 8 20 150
    MBS-CFW-015-TC 
    5/8”
    15 10 23 100
    MBS-CFW-020-TC 
    3/4”
    20 13 28 50
    MBS-CFW-025-TC 
    1”
    25 18 32 50
    MBS-CFW-030-TC 
    1-1/4”
    30 30 50 50
    MBS-CFW-040-TC 
    1-1/2”
    40 30 60 25
    MBS-CFW-050-TC 
    2”
    50 40 60 25
    ● Note: Expanded range describes geometric capability, not the preferred continuous operating point. Selecting near maximum expansion increases braid openings, reduces surface coverage and shortens installed length.

    Typical Applications
    Electronic instruments and test equipment 
    Protects low-level signal cables where added metal weight and stiffness should be minimized.
    Communication and data interconnects
    Adds conductive coverage around compact signal bundles in space-constrained enclosures.
    Robotics and lightweight automation
    Shields moving control and feedback wiring while preserving cable flexibility.
    Aerospace and mobile equipment prototypes 
    Supports weight-conscious harness development subject to project-specific material and compliance review.
    Medical and laboratory equipment
    Helps separate sensitive signal wiring from nearby electrical noise sources; final equipment compliance remains required.

    How to Select

    Start with the cable diameter range, maximum allowable weight and bulk, required flexibility, frequency range and target assembly performance. Confirm installed braid coverage, grounding method, connector or enclosure interface, flex cycles and environmental exposure. Copper foil braid is selected mainly for lightweight flexibility; applications needing high grounding current, very low resistance or maximum mechanical robustness may be better served by MBS-TC.

     

    Customization Available

    Size and coverage - Braid diameter and density matched to the installed cable bundle

    Filament construction - Foil filament type and supporting yarn structure can be evaluated.

    Cut lengths and assemblies - Project lengths and selected termination preparation available by agreement.

    Identification and packaging - Labels, reels, bags, kits and private-label packaging can be customized.

     

    Testing and Compliance

    RoHS, REACH or other material documentation may be available for the confirmed construction. Shielding effectiveness and resistance must be stated only against an agreed method and sample configuration. The product does not by itself certify the cable assembly for EMC, aerospace, medical or other regulated use. Compatibility with soldering, crimping and environmental exposure must be confirmed.

     

    Quality Assurance

    Conductive filament verification - Foil filament identity, appearance and incoming condition are checked.

    Braid quality control - Coverage, expansion, broken filaments and surface consistency are inspected.

    Weight and dimensional checks - Nominal size, length and agreed mass parameters are verified.

    Functional release inspection - Continuity or resistance checks can be specified together with final label and packaging review.

     

    Frequently Asked Questions

    01. How does copper foil braid differ from tinned copper wire braid?
    Copper foil construction is generally lighter and more flexible; tinned copper wire braid is usually preferred for robust bonding, termination and higher current paths.
    02. Can this sleeve be soldered directly?
    It depends on the foil-filament construction and coating. Confirm the intended termination process before selection.
    03.Will expansion reduce shielding coverage?
    Yes. As a braid expands over a larger diameter, its coverage angle and optical coverage can change.

     

    Request a Sample or Quote

      Send the cable diameter range, installed coverage target, frequency range, grounding method, environment, finished length and annual quantity. MJ FLEX will review the shielding construction and recommend a sample or quotation configuration.

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