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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.
    Unit of Measure

    Jacket Type

    		 N/A Nickel-plated nylon rip-stop fabric

    PSA Tape Backing

    		 N/A No PSA tape

    Gasket Service Rating

    		 N/A General duty (urethane foam core)

    Profile Number

    		 N/A 74023

    Height

    		 N/A 0.125 in3.18 mm

    Width

    		 N/A 0.250 in6.35 mm

    Conductive Pressure-Sensitive Adhesive

    		 N/A Non-conductive adhesive

    Operating Temperature Range

    		 N/A –40 to 70 ºC

    Test Method Compression Set

    		 N/A ASTM D3574 (modified)

    Compression Set

    		 N/A < 15 %

    Test Method Electrical Conductivity

    		 N/A CEPS-0002

    Electrical Conductivity Max.

    		 N/A 0.1 O/sq

    Test Method Adhesive Peel Strength

    		 N/A ASTM D1000 (90° Bend)

    Adhesive Peel Strength Min.

    		 N/A 4 lb/in0.7 N/mm

    Product Forms

    		 N/A SQ, REC., D, C, P, L and Custom

    Typical Applications

    		 N/A Doors, Panels, Seams, Faceplates, Ground Pads

    Method of Manufacture

    		 N/A Dispensed foam

    Jacket Material

    		 N/A Ni/Ag Plated rip-stop Nylon

    Foam

    		 N/A High Performance Urethane Foam

    Attachment Method (PSA)

    		 N/A Non conductive, high temp, high tack, closed cell, acrylic PSA

    Baseline EMI Shielding

    		 N/A 90 dB

    Shielding Effectiveness After Cycling

    		 N/A Better

    Softness

    		 N/A Better

    Compression Set ASTM D395 - Method B

    		 N/A 70 ºC - 10 %

    RoHS Compliant

    		 N/A Yes

    Configurations

    		 N/A
    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

    		 N/A
    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

    		 N/A
    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)