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Shield Types Application Guide

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Choose a Foil Shield...
  • For protection against capacitive (electric field) coupling where shield coverage is more important than low DC resistance.
  • When possible sources of interference include TV signals, crosstalk from other circuits, radio transmitters, fluorescent lights or computing equipment.
  • For MATV, CATV, video, networking, computer I/O cables in office, industrial or commercial environments where ambient EMI levels are low.
  • Choose a Braid Shield...
  • For superior performance against diffusion coupling, where low DC resistance is important, and to a lesser extent, capacitive and inductive coupling.
  • When possible sources of interference exhibit low impedance characteristics, such as motor control circuits and switches which operate inductive loads.
  • For computer to terminal interconnect for process, instrumentation or control applications.
  • Choose a Spiral Shield...
  • For functional shielding against diffusion and capacitive coupling at audio frequencies only.
  • When possible sources of interference are power lines and fluorescent lights.
  • For applications when flexibility and flex life are major concerns, such as microphone and audio cables and retractile cords.
  • Choose a Combination Shield...
  • For shielding against high frequency radiated emissions coupling and ESD. Combines the low resistance of braid and 100% coverage of foil shields.
  • When possible sources of interference include radio transmitters, TV stations, printed circuit boards, back planes, motor control circuits and computing equipment.
  • For Video, CATV, MATV, networking, computer I/O cables and computeraided manufacturing applications.
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    The information provided in the resources section is intended for reference only. There is no guarantee, written or implied, regarding the accuracy of the information provided.
    Calvert Wire & Cable