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Item # 82-111-74005, SOFT-SHIELD® 5000 Low Closure Force EMI Strip Gaskets - Rectangular Strips


SOFT-SHIELD 5000 Low Closure Force EMI Strip Gaskets - Rectangular Strips

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SOFT-SHIELD 5000 Series EMI gaskets are designed to meet the stringent shielding and mechanical performance requirements of today’s commercial electronic enclosures, medical electronics, factory automation equipment, reprographics and grounding applications. A growing number of standard profiles and sizes provide flexibility when selecting a gasket for a specific application. Custom profiles or sizes can also be produced.

Each SOFT-SHIELD 5000 Series gasket consists of an electrically conductive fabric jacket over a highly compressible urethane foam core. The nickel-plated, woven nylon rip-stop jacket is selfterminating when cut. Chosen for its excellent compressibility, the foam core typically requires less than 1 lb/in (0.175 N/mm) closure force, making it especially useful for thin-walled plastic enclosures. Standard pressure-sensitive adhesive attachment tape (PSA) makes SOFT-SHIELD 5000 Series gaskets a user-friendly and cost-effective design solution.

Every profile in the SOFT-SHIELD 5000 Series can be provided in a General Duty version or a UL 94V-0 rated version, as needed, with no difference in performance.

Features
  • Choice of General Duty or UL 94V-0 rated versions
  • Typically require < 1 lb/in (0.175 N/mm) closure force – 5 times lower than other gaskets
  • > 90 dB attenuation from 20 MHz to 10 GHz
  • Asymmetrical profiles, as well as “C”, “V”, “P”, “D” shapes
  • No performance degradation after 10,000 compression cycles
  • Wide release liner for easy removal
  • Kiss-cut parts on release sheets for easy “peel-and-stick”
  • grounding applications
  • Self-terminating jacket – no sharp edges
  • Tested to Bellcore GR-64-Core Airborne Contaminants requirements
  • Custom lengths, custom profiles


    • Benefits
  • Cost-effective
  • Alternative to BeCu fingerstock
  • Pick and place installation
  • Technical application support
  • Global distributor/fabricator network
  • Application-ready custom parts (die-cut, spliced, etc.)


    • Note: Compression/deflection curves are typical. Dimensions shown do not include PSA thickness (0.005 inch typically). Actual size shown with PSA strip. All SOFT-SHIELD 5000 Series profiles can be supplied in either General Duty or UL 94V-0 rated versions.




     Specifications   

    Jacket Type
    		Nickel-plated nylon rip-stop fabric

    PSA Tape Backing
    		No PSA tape

    Gasket Service Rating
    		General duty (urethane foam core)

    Profile Number
    		74005

    Height
    		0.079 in
    2.00     mm

    Width
    		0.275 in
    7.00     mm

    Conductive Pressure-Sensitive Adhesive
    		Non-conductive adhesive

    Operating Temperature Range
    		–40 to 70 ºC

    Test Method Compression Set
    		ASTM D3574 (modified)

    Compression Set
    		< 15 %

    Test Method Electrical Conductivity
    		CEPS-0002

    Electrical Conductivity Max.
    		0.1 O/sq

    Test Method Adhesive Peel Strength
    		ASTM D1000 (90° Bend)

    Adhesive Peel Strength Min.
    		4 lb/in
    0.7     N/mm

    Product Forms
    		SQ, REC., D, C, P, L and Custom

    Typical Applications
    		Doors, Panels, Seams, Faceplates, Ground Pads

    Method of Manufacture
    		Dispensed foam

    Jacket Material
    		Ni/Ag Plated rip-stop Nylon

    Foam
    		High Performance Urethane Foam

    Attachment Method (PSA)
    		Non conductive, high temp, high tack, closed cell, acrylic PSA

    Baseline EMI Shielding
    		90 dB

    Shielding Effectiveness After Cycling
    		Better

    Softness
    		Better

    Compression Set ASTM D395 - Method B
    		70 ºC - 10 %

    RoHS Compliant
    		Yes

    Configurations

    Gaskets are supplied in standard 8-foot lengths or cut-to-length strips. Depending on the profile, gasketing can also be supplied on spools. For rapid peel-and-stick grounding applications, the material is supplied as kiss-cut parts on polyester film release backers, or as individual pieces. Chomerics also fabricates single-piece, spliced picture frame gaskets from continuous lengths. With their fully jacketed surfaces, these gaskets are ideally suited for low closure force applications that require 360° EMI shielding, or the ease of installing a onepiece gasket.

    Chomerics’ Applications Engineering department welcomes the opportunity to provide assistance with design and prototype fabrication of SOFT-SHIELD 5000 Series EMI Gaskets in custom profiles.

    Typical Application-Ready Solutions

    Mobile phone grounding

    Conditions and Requirements
  • minimize thru-resistance for optimum grounding
  • maximum 0.25 x 0.25 inch footprint
  • accommodate 0.040 inch variation in gap
  • snap-in plastic cover with 2 lb max. load at 50% gasket deflection
  • high volume application


    • SOFT-SHIELD Gasket Solution
  • highly conductive jacket offers low resistance
  • standard 6 x 6 mm profile, no customization required
  • meets low closure force requirements
  • kiss-cut parts on release paper allow quick peel-and-stick installation


    • Interface between aluminum casting and plastic antenna housing

    Conditions and Requirements
  • overcome 45 dB leakage problem
  • replace multiple strips with single-piece design for ease of installation
  • 0.030 inch flatness tolerance on component mating surfaces
  • low cost a priority


    • SOFT-SHIELD Gasket Solution
  • effectively

    • Typical Tolerances

    Typical cross section tolerances:
    ±0.010 in. (0.25 mm) for all dimensions up to 0.04 in. (1.02 mm)
    ±0.020 in. (0.51 mm) for all dimensions above 0.04 in. (1.02 mm)
    Detailed part drawings are available on request.

    Typical length tolerances:
    0.10 to 6.0 in. (0.25 to 15.2 cm) ± 0.030 in. (0.76 mm)
    6.1 to 18.0 in. (15.5 to 45.7 cm) ± 0.060 in. (1.52 mm)
    18.1 to 42.0 in. (46.0 to 106.7 cm) ± 0.075 in. (1.91 mm)
    42.1 to 96.0 in. (107.0 to 243.8 cm) ± 0.090 in. (2.29 mm)

    Typical kiss-cut tolerances:
    0.04 to 0.12 in. (1.02 to 3.05 mm) ± 0.015 in. (0.38 mm)
    0.121 to 0.40 in. (3.07 to 10.16 mm) ± 0.035 in. (0.89 mm)


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