Source: W. L. Gore & Associates, Inc.
Gore-Shield surface-mount technology (SMT) gaskets are EMI shields that can be installed with standard pick-and-place equipment
W. L. Gore & Associates, Inc. surface-mount technology (SMT) gaskets are EMI shields that can be installed with standard pick-and-place equipment. Gaskets use vendor's GS5200 nickel-filled expanded polytetrafluoroethylene (EPTFE) material characterized for wireless applications. Rather than a continuous bead, the gaskets are a series of small pads which have a solderable shim attached, and are packaged in EIA standard tape-and-reel format. This reduces the EMI gasket to a circuit board component. Using high-speed chip shooting equipment, pads are placed on the ground traces of boards, at rates of 9/second, using reflow soldering. Discrete pads also permit point grounding of shields in areas where EMI shielding isn't critical. This can lower parts-count and cost. SMT gaskets are available in 5.5 mm, 8 mm, and 12 mm lengths, in 1.25 mm and 1.1 mm widths.
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