0095091800 RF/IF and RFID

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RFI and EMI - Contacts, Fingerstock and Gaskets

RFIs (Radio Frequency Interferences) and EMIs (Electromagnetic Interferences) have been pervasive and consistent challenges faced by the electronic industry for years. With the introduction of tight tolerance component design and use of integrated circuits within component designs, the risk of inter-component interference has increased tremendously. To combat this issue, it is essential to use contact materials such as fingerstock and gaskets, which can effectively shield devices from RFIs and EMIs.

Fingerstock is a metal strip or wire attached to a component to create a conductive path that will reduce the risk of RFI and EMI escape. Fingerstock materials provide superior attenuation for wideband noise, DC-current, and high frequency signals with minimal increase to total assembly size. Common fingerstock materials include copper, aluminum, and tin-plated copper, as each has their unique RFI and EMI shielding characteristics.

Gaskets are used to form a seal between two components to reduce the risk of RFI and EMI escape. Gaskets are also used to minimize the risk of corrosion or leakage of hazardous material in the vicinity. The primary functions of gaskets are to provide vibration dampening, absorb shock, seal against pressure changes, and form a barrier to prevent the intrusion of dust, moisture, and RFIs and EMIs. Common gasket materials include rubber, latex, silicone, foil, EMI foam, and conductive foam.

Fingerstocks and gaskets provide effective shielding against RFIs and EMIs and are commonly used in 0095091800 applications. The most commonly used shielding arrangement is to fit wire braid between two components, gasket materials on each side of the braid, and metal strips (fingers) along the edges of the braid. The wire braid shields the whole system, while the gasket materials fill in any gaps and further reduce the risk of RFI and EMI escape. The metal fingers provide a conductive path along the edges of the braid, thus forming a full electronic shield.

In summary, fingerstock and gaskets provide effective shielding from RFIs and EMIs in 0095091800 applications, making them essential components of any electronic device. While fingerstock materials provide effective attenuation of wideband noise, gaskets are used to form a seal between two components and further reduce the risk of RFI and EMI escape. Together, these two components play a vital role in helping the electronic industry maintain safe and reliable designs.

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