In order to avoid unwanted interference in electronic systems, shielding tapes made of copper foil or aluminium are often used. They are easy and quick to apply, oxidation-resistant, flame-retardant according to UL 510 and, in addition to very high conductivity, also have excellent corrosion resistance as well as good punching and soldering properties. EMC shielding tapes with aluminium foil are used for covering during galvanic processes, for cavity sealing, for sealing tubes and containers during inert gas welding, for lining heat and air reflectors and for sealing reaction vessels. EMC shielding tapes with copper foil, on the other hand, are used for shielding electromagnetic fields and for dissipating static charges.
EMI absorbers are near-field absorbers designed for the frequency range from several hundred megahertz to several gigahertz. They dampen electromagnetic fields and prevent interference, crosstalk and oscillations. They are flexible, non-conductive polymer films which are coated with specific metal particles. Absorbers can be used to suppress interfering radiation in electronic devices and reduce the interference effect. For example, electronic components such as ICs and entire assemblies can be protected from interfering electromagnetic radiation by applying a suitable absorber film to the surface.
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