Years ago, in response to growing environmental concerns from Europe over theÂ handling, use, and disposal of Cadmium (Cd) in a wide variety of electrical and industrial applications, Â Checon began developing its plan to create a silver cadmium-oxide free contact material that would meet the needs of our rapidly expanding international interests as well as satisfy those of our evolving North American customers. Â The initiative was no small undertaking as we knew we would be challenged by multiple cost and performance issues, compounded by the slow to market process of electrical testing and customer adoption programs. While the switching industry had already developed silver tin-oxide solutions, for several low power DC applications, the same opportunity seemed less achievable with mid to high power AC devices that depended so heavily on cadmium’s unique electrical capabilities.
Recognizing the inevitability of ROHS sanctions against continued use of cadmium in electrical contacts, Checon moved its development efforts beyond its own lab to a customer collaborative program focused on tightly monitored material testing in device application environments. Â Our revised plan was to develop a new silver tin-oxide material system that performed in specific customer applications while carefully maintaining investment in existing product designs. In order to control costs and maintain the highest reliabilityÂ and quality characteristics, we drilled down toÂ identifying mechanical ductility as an essential ingredient in preserving the processing efficiencies of toplay construction, while meeting the demanding mechanical and electrical properties across many applications including AC contactor, motor protection, and telecommunications.
And so the process began to unfold with appreciative milestones in silver tin-oxide product development and testing. Backed by customer investment in the expansion of a rigorous electrical and mechanical testing program, our proprietary silver tin-oxide products offered under the Checon GTi Series are now fully approved across multiple customer product lines, actively on par with the performance of previously specified silver cadmium-oxide materials as well as outperforming our cadmium-free competition.
Given the varied interpretation and uncertainty regarding the status of cadmium exemptions both present & future, we welcome the opportunity to work directly with customers just beginning or revisiting a material change to match our tested solutions with your specific application requirements.
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