4181AB51K02400

RFI and EMI - Contacts, Fingerstock and Gaskets

Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) can cause significant electrical interference in electronic equipment, resulting in noise disturbance and data corruption. To reduce these effects, shielding must be employed. Shielding acts as a barrier to the underlying electrical noise and interference. To create this barrier, materials that are conductive, highly reflective, and have low eddy current losses are used. 4181AB51K02400 (4181) is an RFI/EMI shielding material from Chomerics, which is specially designed to provide these characteristics.

4181 is a combination of three components: contacts, fingerstock, and gaskets. The contact is a conductive material used at the boundary of the shielding area for good current path. The fingerstock is a highly conductive material that acts as a connector between adjacent contact points. Finally, the gasket is an electrically and thermally isolating element which helps seal the entire contact area.

The working principle of 4181 is providing a conductive pathway between adjacent metal surfaces, while at the same time preventing the flow of stray current through the contact region. Conductive pathways are formed by making contact points on the metal surfaces, with the fingerstock providing the necessary conductance. The gasket is also added to provide thermal protection and to insulate the contact surfaces from each other. Finally, the shielding material acts as a barrier to the underlying electrical noise and interference.

4181 is commonly used in a variety of applications, including medical devices, consumer electronics, automotive parts, aerospace components, and more. It is also employed in the construction of electrical devices, such as switches, motors, and relays. The material is uniquely suited to these applications due to its excellent ability to absorb and block electrical interference. Additionally, its high electrical and thermal conductivity makes it an ideal choice for circuit board applications. Its durability allows it to withstand repeated vibration and environmental changes for superior shielding performance. Furthermore, 4181 is also particularly effective in applications where the current must be controlled and maintained.

4181AB51K02400 is an effective and versatile RFI/EMI shielding material designed to provide shielding solutions for a broad range of applications. Its combination of contacts, fingerstock, and gaskets provide an effective barrier against electrical interference, while its durability, thermal conductivity, and other characteristics make it a reliable choice for shielding in high performance equipment. The material is suitable for installation in both indoor and outdoor settings, making it a suitable choice for a variety of environments.