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RFI and EMI - Contacts, Fingerstock and Gaskets

RFI and EMI, also referred to as Radio Frequency Interference and Electromagnetic Interference, are two important concepts in the field of electrical engineering. Both RFI and EMI refer to unintentional transmissions of electromagnetic energy from one source to another. This energy causes various forms of interference to electronic systems, which can affect the performance, quality, and reliability of these systems. To prevent these forms of interference, it is important to understand the sources of RFI and EMI, the various types of protection or shielding available, and how to implement these protections in order to minimize their effects.

In the field of RFI and EMI, contacts, fingerstock, and gaskets are all important components in the protection against these forms of energy. Contacts are used in order to provide electrical continuity between two surfaces. These surfaces must be properly matched in order to allow for optimal electrical performance. Contacts can come in the form of standard, spring, and forced contact designs, and are available in both high surface contact and compression contact designs.

Fingerstock, also known as waveguide and EMI gaskets, is an important material in the electronics industry, and is used for the purpose of providing protection against RFI and EMI radiation. In order to provide the necessary protection, fingerstock must be placed in a double-wall structure, such as a waveguide, in order to effectively attenuate and reduce the energy from the source. The waveguide material of the fingerstock isolates the source radiation from the rest of the system, and reduces the amount of energy that can pass through to the receiving system.

Finally, gaskets are a form of contact protection used in order to stop the passage of electromagnetic energy from one surface to another. Gaskets are typically constructed from metal, plastic, rubber, or foam materials and come in a variety of shapes and sizes. Gaskets are typically used to provide a barrier between two adjacent circuit boards, or between different components in an electronic system.

Understanding the application field and working principle of RFI and EMI contacts, fingerstock, and gaskets is essential for those looking to ensure that their electronic devices are operating optimally and effectively. By properly selecting the best type of contact, fingerstock, and gasket for a particular application, it is possible to reduce the effects of RFI and EMI and ensure that the system is running smoothly.

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