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Laird Tech introduces beryllium-free EMI solution

Posted: 22 Aug 2006     Print Version  Bookmark and Share

Keywords:Laird  Recyclable Clean Copper  EMI shield  gaskets 

Laird Technologies has introduced the Recyclable Clean Copper range of environmentally friendly, copper-based shielding gaskets that offer a beryllium-free EMI solution for use in a wide range of slotted applications.

Recyclable Clean Copper alloys cost about 10 per cent less than copper beryllium (CuBe) alloys, said the company. Additionally, these products contain 13 per cent less copper by volume and is therefore less affected by increasing variations in copper prices than similar products that contain CuBe.

Moreover, the gaskets meld strong stability with tensile strength to achieve high levels of thermal and electrical conductivity and elasticity, making it suitable for use in both grounding and shielding applications at a rate that is comparable to traditional metal EMI shields. Their shielding performance is similar to other copper alloys with values over 100db shielding effectiveness readily achieved, Laird explained.

"The Recyclable Clean Copper shielding gaskets extend our continuing commitment to protecting the environment in which we live and work," said Peter Graustein, global product director for metals products, Laird Technologies. "This alternative material also exhibits better stress relaxation properties than many other solutions, allowing it to maintain pressure longer at contact points resulting in higher end product quality and longer system life spans for automotive, computer, military and telecommunications devices."

The new product series is fully compliant to EU RoHS Directive 2002/95/EC and alleviates the environmental, safety and segregation concerns associated with the traditional use and recycling of beryllium-based copper alloys. The company said the new gasket material is characterized by superior yield strength of up to 100MPa compared to other common copper alloys.

Key applications include navigation and infotainment systems, NAS or SAN storage systems, high-end servers and communications display units, as well as base stations, handsets and network enclosures.

The flameproof product is targeted at high-volume designs and custom stampings are available upon request. Prices range from Rs.6.97 (15 cents) to more than Rs.222.91 ($4.80) each with an average sales price between Rs.20.90 (45 cents) and Rs.36.69 (79 cents). These prices compare favourably to current CuBe pricing and become even more advantageous as the overall cost for CuBe increases, the company said.




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