Chomerics' beryllium-copper (BeCu) and stainless steel EMI contact fingers combine a high level of EMI shielding with a highly flexible material, requiring only a low contact force.
The excellent performance of beryllium-copper, such as: high tensile strength, very good electrical conductivity, make it an ideal material for EMI shielding over a wide frequency range.
The application is to allow doors and covers of shielded rooms to make particularly good electrical contact with the frame. Even with frequent opening and closing. Also, depending on the design, a sweep can help reduce any oxide buildup. An alternative application is to easily make current-carrying contacts or end-stop switches.
One way to prevent oxidation is to ensure that the metals are galvanically compatible. To achieve this, the profiles are delivered plated without sacrificing ductility.
For applications that are less mechanically demanding, there are stainless steel spring contacts. These are slightly more rigid but offer good tensile strength, extreme operating temperature range and good electrical conductivity.
INFORMATION CHO092
