Components that prevent the negative effect of electromagnetic waves on electronic devices
EMI/RFI (electromagnetic interference/radio frequency interference) components are filters designed for signal/power line applications to pass a defined band and reject undesired emissions. Such filters usually contain series-inductive and parallel-capacitive components that provide a low-impedance path for noise around the protected circuit. Octopart is a great place to start your search for EMI components, RF Devices and other electronic parts.