Schlegel Electronics Materials (SEM) line of silicone gaskets provides shielding capability in diverse markets and applications, including the military, aerospace, medical, fluid seal, environmental and microwave applications. Our silicone elastomers are specifically designed for gasketing applications that require high levels of attenuation up to 120 db.
SEM is renowned for its high quality EMI shielding gaskets. We provide a full family of products to meet a wide spectrum of shielding needs. Our silicone gaskets meet customer needs in a variety of markets, with very competitive pricing. Engineers can now fulfill all their shielding needs from one manufacturer, rather than having to go through multiple distributors or resellers.
Silicone, the base material for elastomers, has environmental sealing properties. Shielding is achieved by incorporating various media in the silicone, depending on the product. Wire is used to provide conductivity in the oriented silicone line and a non-corrosive particle is added to the extruded parts. Because conductive elastomers can be extruded, many different profiles and lengths can be made to suit any application.
Grounding pads, also known as surface mount gaskets or board pads, ensure electrical performance without breaking under mechanical or environmental stress throughout the lifetime of the product. Schlegel’s Doubleshield Pad ensures reliable grounding performance in electronic applications. The Pads are delivered in tape-and-reel packaging for automated placement and soldering reflow using standard SMT equipment.
The flexible and easily compressible grounding pad can to take up tolerances and close the gap between a PCB and another component in addition to providing a reliable grounding contact.
The Doubleshield Pad is used as a grounding contact on printed circuit boards commonly used in the electronics industry.
The Doubleshield Pad has hollow profile with a core of soft silicone and a shell of electrically conductive silicone rubber filled with Ni/C particles.
The product is laminated with a solderable metal strip in Nickel alloy 201.
The Doubleshield Pad is delivered in three different versions but different cross sections and length can be developed to fit any demand.
The recommended operating temperature is between -55°C and +125 °C. To assure a safe and repeatable compression Schlegel recommend the use of mechanical compression stops allowing a compression degree of 20 – 25%. Minimum 10% and maximum 50% compression is recommended.
The Schlegel Doubleshield Pad fulfil the requirements set by the Directive 2011/65/EU and its amendments (RoHS).
The compression force versus compression degree is shown in the graph below.
The electrical resistance versus compression degree is shown in the graph below.
The Doubleshield Pad is packaged and delivered in tape-and-reel.
The grounding pad is delivered in sealed plastic bags and the products are as such considered as MSL-1 with an unlimited storage time. This assumes that the storage is indoors to protect the product from rain and direct sunshine and at a temperature between 5 and 30°C and a relative humidity of 20-80%.
The data given in this product information should be taken only as a guide and not a specification.
The recommendations and data given are based on our experience to date, however, no liability can be assumed in connection with their usage and processing.
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