Schaffner fn 2070 multi stage emi filters single phase chassis mount schaffner emc fn 2070 3 06 this 3a two stage emi filter is designed for quick and simple chassis mounting the filter provides high conducted attenuation performance and is perfect for high frequency attenuation tasks in applications such as building automation industrial machinery data processing equipment etc schaffner emc fn2070 3 06 3a two stage chassis mount filter