0098052017

Series:	--
Part Status:	Active
Type:	Fingerstock
Shape:	--
Width:	0.370" (9.40mm)
Length:	16.000" (406.40mm)
Height:	0.140" (3.56mm)
Material:	Beryllium Copper
Plating:	Tin
Plating - Thickness:	299.21µin (7.60µm)
Attachment Method:	Adhesive
Operating Temperature:	121°C

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RFI and EMI – Contacts, Fingerstock and Gaskets

Contact materials are a critical component of any electromechanical system, capable of providing connections between two conducting components while withstanding electrical arcing, generating static electricity, or establishing and maintaining electrical contact. These types of electrical interfaces are common across a range of industries such as space exploration, telecommunications, aerospace, automotive, and industrial automation, and are used in a variety of applications. They are also critical components of any radio frequency or electromagnetic interference (RFI/EMI) protection system. In this article, we will discuss the types of contact materials available for applications that require RFI and EMI protection, including contacts, fingerstocks, and gaskets.

Types of Contact Materials

Contacts are metal parts that provide electrical or power connections between two conducting elements. They can be classified into two broad categories: fixed and sliding contacts. Fixed contacts are designed to provide a permanent connection between two contacting materials, while sliding contacts provide the same functionality with the added benefit of being able to slide within the contact box and change positions. Contacts can also be divided based on their conductivity levels, with those providing higher conductivity being classified as high-conductivity contacts.Fingerstocks are traditionally made of a malleable metal such as bronze, although other conductive metals such as copper or silver have also been used. These components are designed to make contact between two conductors, allowing for electrical current to be conducted between them. Fingerstocks are typically installed in an electromechanical system where they can be adjusted to ensure optimal electrical connectivity.Gaskets are any type of material that serves as an interface to prevent the passage of electromagnetic waves. They are typically composed of copper or a copper alloy and can be either solid or semi-solid. Solid gaskets are used when the transmission of maximum electrical current is desired without any radiation or reflection, while semi-solid gaskets suppresses radiation but still allows transmission of some electrical current.

Applications of Contact Materials for RFI and EMI Parameters

Many applications require protection from RFI and EMI. For example, in aerospace, where sensitive equipment and radio communication are essential, secure connections are necessary. In these cases, fixed and sliding contacts, fingerstocks, and gaskets are used to create an effective electrical connection while still protecting against RFI and EMI interference. Additionally, these contact materials can be used in applications that require electrical conductivity in a limited space. In robotics and automation, where motion control is required, the use of sliding contacts, fingerstocks, and gaskets can enable efficient motion control without introducing any interference. Contact materials can also be used to maintain electrical connections in environments where vibrations are present. For example, in automotive applications, where vibrations caused by the engine may be present, fixed and sliding contacts, fingerstocks, and gaskets can provide stable connections between components without allowing interference.

Working Principle

The working principle of contact materials is relatively simple. The fields of electromechanics and electrical engineering rely heavily on electrical connections between components for power transmission, data transmission, and many other applications. Contact materials provide the connections between materials, ensuring both physical and electrical contact is made. These materials are designed to provide the necessary electrical connection while also protecting against RFI and EMI interference.The different types of contact materials vary in their capabilities. Fixed and sliding contacts, such as those found in electrical connectors, are made to provide a permanent or changeable connection. Fingerstocks, on the other hand, are malleable metals designed to form contact between two conducting surfaces. Finally, gaskets are used to block radiation and reflection to create an efficient RFI and EMI shield.

Conclusion

Contact materials are an essential component of any electromechanical system, allowing for efficient power and data transmission while also providing protection from RFI and EMI interference. Different contact materials offer different advantages, with fixed and sliding contacts providing permanent or adjustable connections, fingerstocks providing adjustable conductivity, and gaskets to provide maximum electrical shielding to prevent radiation and reflection. Understanding the different applications and working principles of contact materials can help ensure optimal performance for any electromechanical system.

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