Abstract: Interference suppression filter, including a metal cup having an open end, a ring core choke, a wound capacitor and a discharge resistor being interconnected and cast together in the metal cup, first and second network side and appliance side connectors being extended outwardly through the open end of the cup, the first connectors each being connected to the ring core choke and having free ends, an insulator plate disposed adjacent the open end of the cup, and resilient clamping elements being disposed on the plate, at least the free ends of the first connectors being held by the clamping elements, and the second connectors being dip-soldered to the first connectors.