Toroid with channels and circuit element and modular jack with same

A modular jack comprising:

• an insulative housing for receiving a mating plug, the housing having a cavity;
• a plurality of terminals positioned in the housing and configured to engage contacts of the mating plug;
• and
• a circuit element positioned in the cavity and electrically connected to the plurality of terminals, the circuit element configured, in operation, to condition signals passing through the jack, the circuit element including:
• a one-piece toroidal core made of a sintered, ferrite material and having a central bore therein defining an inner surface, an outer surface and oppositely facing top and bottom surfaces;
• a plurality of equally spaced apart longitudinal channels formed in one of the top, bottom and outer surfaces;
• and
• a plurality of wires twisted together in a uniform, repeating pattern to define a group of twisted wires, the group of twisted wires extending through the central bore and being wrapped around the core to define a plurality of uniformly spaced longitudinal turns with a portion of each turn being positioned in one of the channels.