EMI suppression filter with transient suppression element

摘要

An EMI suppression filter of the type having a ceramic capacitor 14 mounted around an inner, signal feedthrough conductor 10 within an outer metal housing 12, wherein an electronic chip component 26, such as a metal oxide varistor chip, capable of providing transient voltage protection is mounted within the metal housing 12 between the inner conductor 10 and the outer housing 12. The capacitor 14 is provided with mounting pads which diverge and maximise their area in the region where they connect the component 26 to provide optimum current flow under transient conditions. IMAGE