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Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) are two of the most important considerations when designing electronic components. In order to protect against the detrimental effects of RFI and EMI, contact materials must be carefully chosen. Contacts, Fingerstock and Gaskets are three of the most common categories of materials used for RFI and EMI applications.

Contacts

Contacts are materials that function as electrical connectors, providing current and voltage pathways between components. When selecting contacts for RFI and EMI, the two most important considerations are the contact material and the contact configuration. Common materials for contacts include copper, brass, aluminum, and stainless steel. In order to maximize the effectiveness of the contact shielding, the contact configuration should be designed with minimum gap tolerance to minimize any potential for signal leakage.

Fingerstock

Fingerstock are materials that are commonly used to form electrical connections between components. They consist of metal strips that are bent into a variety of shapes to form electrical contacts. Fingerstock is often used for data and communications applications, as it can help reduce signal loss and interference issues due to the configuration of the contact surfaces. Copper fingerstock is the most common material used for RFI and EMI applications, as it offers excellent electrical and thermal performance.

Gaskets

Gaskets are materials used to cover electrical openings and create a tight seal that helps prevent EMI and RFI from passing through. Gaskets are often made from a variety of materials including rubber, plastic, foam, or metal. In order to maximize the effectiveness of the gasket shield, the material must be chosen carefully as different materials may provide different levels of electrical and RF shielding performance. Additionally, the gasket material must be properly installed according to the manufacturer’s specifications to ensure a proper fit and provide maximum protection against EMI and RFI.

When it comes to shielding electronic components from the damaging effects of RFI and EMI, proper contact materials play a key role in providing protection. Contacts, Fingerstock and Gaskets are three of the most common categories of materials used for RFI and EMI shielding applications, and each material must be selected and installed carefully to ensure that the components are properly protected.

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