KEMET AC Line Filters, also known as coils or chokes, suppress electromagnetic interference (EMI) noise. All consumer electronics that use AC power need EMI suppression such as AC line filters. KEMET Electronics AC Line Filters are compact, low profile, and lightweight. These coils are available in a variety of form factors and heights, including split and non-split bobbin designs in common mode, as well as differential / normal mode, dual mode, and earth inductors.