Line Filters for Converters & Power Electronics EPCOS / TDK Line Filters for Converters and Power Electronics feature up to 1600A rated current and high 1500V voltage ratings, depending on the model. These filters provide a compact design and are ideal for medium- to high-power one-phase applications. EPCOS 2-Line Filters for Converters and Power Electronics offer a terminal block, Litz wire or busbar connectors, and different attenuation levels depending on the model.