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.
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
Benefits
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 Other (to be assigned) |
PSA Tape Backing |
N/A PSA tape |
Gasket Service Rating |
N/A General duty (urethane foam core) |
Profile Number |
N/A 74020 |
Height |
N/A 0.039 in1.00 mm |
Width |
N/A 0.157 in4.00 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 SOFT-SHIELD Gasket Solution Interface between aluminum casting and plastic antenna housing Conditions and Requirements SOFT-SHIELD Gasket Solution |
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) |
