Written By: Ron Demcko
Abstract: DOWNLOAD WHITE PAPER
EMI control is a key design goal in electronic systems. Three terminal FeedThru capacitor filters are one component option that can be used to simplify designs needing a broadband EMI filter response. The proper selection and use of SMT FeedThrus can lead to a variety of system improvements such as: reduced overall component count, less complex PCB layout, increasing manufacturability, improved reliability, and lower weight. It is because of these potential advantages that three terminal capacitors are now accepted in designs ranging from avionics to cell phones, automobiles to SMART grid controllers. This list of applications is growing as FeedThru capacitors evolve into smaller packages, obtain AEC Q200 qualification, and increase current ratings. This paper describes the basics of SMT FeedThru devices and their performance characteristics.