SOFT-SHIELD 4840 Electrically Conductive Foam EMI Shielding Gaskets | Product Series

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SOFT-SHIELD 4840 Electrically Conductive Foam EMI Shielding Gaskets

SOFT-SHIELD 4840 Electrically Conductive Foam EMI Shielding Gaskets

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Parker Chomerics SOFT-SHIELD® 4840 conductive, Z axis foam consists of silver-plated nylon fibers embedded into low density open cell urethane foam for grounding of environmentally controlled applications.

Technical Specifications

  • Shelf Life: 24 Months (with adhesive), Indefinite (no adhesive)
  • Storage Temperature: 70 ± 20 °F, 21 ± 10 °C
  • Fabric Material: Silver-Plated Fibers into Urethane Foam
  • Operating Temperature: -40 to 70 °C, -40 to 158 °F
  • Deflection at Pressure: 15 %
  • Flammability Rating: UL 94 V-0
  • Product Series: SOFT-SHIELD 4840
  • Product Style: Conductive Foam
  • Noise Shielding Level: 60 dB
Safety Warning

Full Product Description

Parker Chomerics SOFT-SHIELD® 4840 is an electrically conductive foam used for grounding of environmentally controlled applications. Consisting of silver-plated nylon fibers embedded into a low-density urethane foam, SOFT-SHIELD® 4840 is a low compression force gasket solution ideal for high volume applications such as consumer devices and industrial electronics. It is a more cost-effective version of the market leading SOFT-SHIELD® 4850, requiring lower compression forces but providing slightly lower conductivity (higher through resistance).

SOFT-SHIELD® 4840 is flammability rated to UL 94 V-0 with an operating temperature range of -40°C to 70°C. The optimized dispersion of conductive fibers within the foam matrix means that this material is electrically stable over many closure cycles which experiencing a low compression set (<15%). Provided with or without a conductive pressure sensitive adhesive, SOFT-SHIELD® 4840 is available in bulk rolls, cut sheets, or custom die cut shapes.

Product Features
• Z-axis electrical conductivity
• Good through resistance (<150 milliohms at 30% gasket deflection)
• Average 60 dB shielding effectiveness from 20 MHz to 10 GHz
• Low closure force (<2 PSI)
• Stable electrical performance (through resistance) after multiple closure cycles
• Low compression set (<15%)
• Available in cut sheets, bulk rolls or custom die cut shapes
• Non-nickel bearing material
• RoHS, REACH and UL 94 V-0 compliant

Typical Applications
• High volume consumer electronic devices
• Servers, desktop PCs, and laptops
• I/O panels, backplanes, connectors, access panels and rectangular/square strip gasket seals
• Telecom infrastructure rack and enclosure components
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Products Adhesive Type Length Width
4840-10-0610-0100 No Pressure Sensitive Adhesive (PSA) 50 ft (15,240 mm) 24 in (609.6 mm)
4840-10-0610-0150 No Pressure Sensitive Adhesive (PSA) 50 ft (15,240 mm) 24 in (609.6 mm)
4840-10-0610-0200 No Pressure Sensitive Adhesive (PSA) 50 ft (15,240 mm) 24 in (609.6 mm)
4840-10-0610-0300 No Pressure Sensitive Adhesive (PSA) 50 ft (15,240 mm) 24 in (609.6 mm)
4840-10-0610-0400 No Pressure Sensitive Adhesive (PSA) 50 ft (15,240 mm) 24 in (609.6 mm)
4840-10-0610-0500 No Pressure Sensitive Adhesive (PSA) 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-0610-0100 Electrically Conductive PSA 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-0610-0150 Electrically Conductive PSA 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-0610-0200 Electrically Conductive PSA 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-0610-0300 Electrically Conductive PSA 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-0610-0400 Electrically Conductive PSA 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-0610-0500 Electrically Conductive PSA 50 ft (15,240 mm) 24 in (609.6 mm)
4840-12-1212-0100 Electrically Conductive PSA 12 in (305 mm) 12 in (305 mm)
4840-12-1212-0150 Electrically Conductive PSA 12 in (305 mm) 12 in (305 mm)
4840-12-1212-0200 Electrically Conductive PSA 12 in (305 mm) 12 in (305 mm)
4840-12-1212-0300 Electrically Conductive PSA 12 in (305 mm) 12 in (305 mm)
4840-12-1212-0400 Electrically Conductive PSA 12 in (305 mm) 12 in (305 mm)
4840-12-1212-0500 Electrically Conductive PSA 12 in (305 mm) 12 in (305 mm)
4840-12-2424-0100 Electrically Conductive PSA 24 in (609.6 mm) 24 in (609.6 mm)
4840-12-2424-0150 Electrically Conductive PSA 24 in (609.6 mm) 24 in (609.6 mm)
4840-12-2424-0200 Electrically Conductive PSA 24 in (609.6 mm) 24 in (609.6 mm)
4840-12-2424-0300 Electrically Conductive PSA 24 in (609.6 mm) 24 in (609.6 mm)
4840-12-2424-0400 Electrically Conductive PSA 24 in (609.6 mm) 24 in (609.6 mm)
4840-12-2424-0500 Electrically Conductive PSA 24 in (609.6 mm) 24 in (609.6 mm)
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