Comparison of high performance alloys in fingerstock shielding application

CuBe fingerstock gaskets have long set the benchmark for slotted EMI shielding applications with excellent elastic performance. Other alloys such as stainless steels come with compromises in terms of both shielding effectiveness and elastic performance. Offering appealing attenuation performance nearly comparable to CuBe and close spring performance to that of CuBe, CnNiSn offers a potential alternative to traditional CuBe gaskets. This paper gives a brief comparison between CuNiSn and CuBe gaskets through FEA analysis and experimental tests, and highlights how to improve the performance of CuNiSn gaskets to fulfill the needs of manufactures who face an increasingly competitive global market place, in which consumers are both environmentally concerned and price conscious.