Posted to News on 30th Jun 2009, 10:09
TVS surge suppression connectors use CoF filters
CoF (chip-on-flex) filters from ITT Interconnect Solutions provide the framework for a new state-of-the-art TVS Surge suppression connector. The CoF filter design, with one standard flex per layout, utilises a flexible circuit internal to the connector where chip capacitors are surface-mounted on a very small pad adjacent to the feed-thru contact. This flex circuit design provides the necessary platform for surface-mount TVS devices for lightning strike protection.
Off-the-shelf devices for both filtering and surge protection can be mounted using an automated manufacturing process. The result is a very cost-effective, reliable, lightweight and compact design, benefiting from the robustness, thermal and mechanical performance associated with ITT Interconnect Solutions' chip-on-flex products.
CoF filters offer customisable, individual circuit values by adding or removing the chip capacitor and TVS devices. A wide range of capacitance and TVS values is available. Tested to Mil-DTL-38999 Series III standards for mechanical shock, vibration and high-altitude DWV, CoF components exceed 1000 cycles of thermal shock as per Mil-Std-1344. The devices feature contact counts from one up to 600 and benefit from multiple configurations, including rack and panel, circular and D-sub.
ITT Interconnect Solutions offers its customers complete design and design change services for its CoF devices. The components are available at short lead times of 10 weeks (reduced from 16 weeks).
Further details are available in an application note freely downloadable from www.ittcannon.com.
