EcoGreen™ 77A

Fabric-Over-Foam Gaskets

Product Description

Laird’s Fabric-over-Foam (FoF) 77A/77B EMI gaskets provide wide compression ranges with low compression force, excellent EMI shielding performance and offering excellent assembly tolerance absorbing for customers where EMI issues occur. Laird 77A/77B Series EMI gaskets are composed of electrically conductive fabric wrapped around a soft urethane foam core. They are supplied with a conductive pressure sensitive adhesive (PSA).
FOF

Features and Benefits

  • Low compression forces allow for use of lighter materials
  • Operation temp up to 85oC
  • Both grey (77A) and black (77B) colors are available
  • RoHS compliant
  • Halogen-free per IEC-61249-2-21 standard
  • Low surface resistivity of < 0.07 Ω/□ provides excellent conductivity

Capabilities

  1. Virtual Design Centre
  2. Automated Packaging
  3. Custom Automation
  4. Custom Product Development
  5. Prototyping
  6. Service
  7. Testing

Datasheets

77A Ultra-soft Series Last updated04/22/21

Technical Specification

  • Typical Properties
    Color
    Natural
    Construction and Composition
    Conductive Fabric + Foam + PSA
    Foam Core Material
    Polyurethane
    Operating Temperature Max (Celsius)
    85
    Operating Temperature Min (Celsius)
    -40
    Shelf Life
    12 months at 23℃/60% R.H.
  • Electromagnetic Properties
    Shielding Effectiveness (dB)
    103 dB at 100MHz. 97 dBat 1 GHz.
  • Mechanical Properties
    Compression Set
    <15%
  • Compliance
    Lead Free
    Yes
    REACH
    Yes
    ROHS Compliant
    Yes
    UL Flammability Rating
    Non-FR
  • Options
    Ultrasoft
    Yes