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While radio frequency interference (RFI) and electromagnetic interference (EMI) can cause a slew of issues for electronic devices, the application of specialized contacts, fingerstock, and gaskets can help to protect against interference. In this article, we will explore how these various products work and what they can do to reduce RFI and EMI.

Contacts: contacts are used to provide a connection between two or more conductors. They can provide both grounding and electrical continuity between circuits while reducing electrical noise, RFI, and EMI. Contacts can come in various shapes and sizes and are most commonly found on circuit boards and connectors. They are designed to have low contact resistance to reduce power dissipation, as well as low noise levels, ensuring that circuits aren’t inadvertently interfered with. Contacts also provide variations in contact force and continuity over time, and are often designed to have a specific contact force profile to ensure consistent and reliable performance over time.

Fingerstock: fingerstock is a type of EMI shielding that is used to reduce RFI and EMI interference. It is made from either ferrous or non-ferrous materials and is usually found on electronic enclosures or other devices that need protection from interference. Fingerstock is designed to absorb and reflect EMI fields before they enter or exit a device. The material itself is designed to be semi-conductive, which serves to dissipate EMI as the interference leaves its surface. Fingerstock can be designed to provide shielding across a wide range of frequencies, as well as to provide resistance to water and humidity.

Gaskets: gaskets are used to provide an isolation barrier between two surfaces in order to reduce the transmission of EMI between them. These gaskets can be metallic or non-metallic and are designed to effectively seal out any EMI that escapes from the electronic enclosure or components. Gaskets are also designed to provide a degree of mechanical shock resistance, as well as to protect against mechanical vibration. They can be found on various electronic components, from computers to printed circuit boards.

In conclusion, contacts, fingerstock, and gaskets are all essential components when it comes to reducing RFI and EMI interference. They provide electrical connections that reduce noise, absorb and reflect EMI, and provide a physical barrier to reduce the transmission of EMI. By utilizing these components, engineers can ensure that their devices are properly shielded from interference and remain functional.

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