EMI shielding gasket rated at temperatures up to 125°C

July 26, 2012 // By Julien Happich
Chomerics Europe has introduced a new low closure force EMI gasket rated for use in high temperature applications up to 125°C. The Soft-Shield 3700 is a fabric over foam (FOF) material that comprises a conductive fabric wrapped around a soft, cellular silicone foam.

The new material is able to provide a cost effective EMI / ESD solution in a wide range of higher temperature applications in the automotive, military, medical and telecom sectors where most existing gaskets that use a urethane foam are unsuitable due to their 70°C upper temperature rating. Soft-Shield 3700 is able to achieve a shielding effectiveness of greater than 100 dB (between 50 MHz and 10 GHz) with a low closure force of just 0.175 N/mm. Available in a choice of square and rectangular profiles to ensure optimum mechanical fit and electrical performance, the material is a suitable replacement for traditional spring finger type products in assemblies where enclosures are assembled without mechanical fixings that exert high forces, or where a wide range of tolerances exist. The material retains its memory and exhibits excellent compression set over its -40 to +125°C operating temperature range. UL 94 V-0 rating plus RoHS and REACH compliance provide designers with the reassurance of the material's adherence to prevailing legislation requirements.

Visit Chomerics at www.parker.com/chomerics