3021002 RF/IF and RFID

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RFI and EMI - Contacts, Fingerstock and Gaskets

As electronic devices become more complex, the demand for reliable contacts and gaskets continues to increase. Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) shielding are essential for allowing the smooth operation of electronic devices. As such, contacts, fingerstock and gaskets play an important role in shielding electronic devices from EMI and RFI sources.

Contacts are typically made from copper or plated metals, such as copper, nickel, or gold. These materials are usually hardened and treated in order to increase their electrical and mechanical properties. For example, copper contacts may be plated with silver or nickel to provide increased electrical conductivity and increased resistance to corrosion. The process of hardening contacts is known as “work hardening”, and is typically done using the cold rolling or heat treatment method. After hardening, contacts are usually pressed or molded into different shapes and sizes required for the particular application.

Fingerstock is a specialized type of contact material made from flexible, metallic, or plastic materials. This type of material is also used for shielding, and is typically available in strips or sheets. Fingerstock is usually inserted between components in order to provide an electrical and mechanical connection necessary for the application. Commonly used fingerstock materials include copper, aluminum, stainless steel, brass, and nickel-plated alloys.

Gaskets are used to provide an electrically and mechanically sealed joint between components. They come in several forms, such as metallic, foam-based, or plastic-based gaskets. Metallic gaskets usually consist of a metal tube, which is placed between the components and covered with a thin metal foil. The foil is then clamped down, creating a tight seal that protects the components from EMI and RFI. Foam-based gaskets are used for sealing purposed, and can be made from any pliable material, such as rubber, foam, or cushioned metal. Plastic gaskets are often used for sealing purposes, and are much more resistant to EMI and RFI than foam or metallic gaskets.

RFI and EMI shielding is a key concern for electronic applications, as it is necessary for ensuring the safe and reliable operation of the device. Contacts, fingerstock, and gaskets are all important components in RFI and EMI shielding, as they provide the necessary electrical and mechanical connections required for the smooth operation of the device. These materials are also relatively economical and easy to use, making them the perfect choice for many applications.

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