Polyurethane Foam Shielding Gaskets & Material:

We offer a range of EMI shielding gasket, strip, cabinet and absorber products, with attenuation from 24 dB to 162.7 dB.Every electronic device generates a certain amount of radiation interfering with the way it operates. Not only is it crucial to protect internal components and choose the appropriate gasket material, but it is a must to also consider any external sources that could cause an unwanted effect. EMI gaskets protect the internal parts of devices from electromagnetic interference by filling gaps in between components. The EMI is effectively stopped from entering or exiting devices and instead becomes rechannelled.Each gasket comprises materials with individual benefits making it suitable for a specific application. These include compressibility, shielding performance, environmental sealing, material compatibility and corrosion control.

Examples of our EMI shielding solutions

One example is the WE-LT conductive shielding gasket range from Würth Elektronik. This uses conductive fabrics with an Ni/Cu-layer, and has a PU sponge core (elastomer) covered with electro conductive fabric. Its square profile offers a larger bearing surface and therefore excellent contact. Centred, double-sided adhesive tape (non-conductive) provides easy mounting.The products are used in displays, metal housings, and switching cabinets. In some applications, the gaskets can be used to provide IP54 protection against dust and splashed water.Kemet’s EF Series Flex Suppressors® are effective suppressors for high frequency noise generated from electronic devices. The flexible sheet is a polymer base blended with micron sized magnetic powders dispersed into the material. The EF Series suppressors are effective for resonance and wave suppression, and can be cut into virtually any shape.Another approach to prevent EMI radiation from PCBs uses Würth Elektronik’s WE-SHC range of shielding cabinet products. Constructed of tin plate to DIN EN 10202/10203, the two-part cabinets comprise a solderable grid frame (SMT/THT) and a removable cover. The cabinets keep sensitivity low for RF input, output, and amplifier stages, oscillators, and EMC-sensitive parts in plastic cases.