Common mode choke coil with vertically arranged edgewise windings of rectangular wire

A common mode choke coil comprising

• a holder including:
• a base section;
• two side walls formed respectively at both sides of the base section, and each having a slot hole toward its upper end;
• and
• wire guide strips formed respectively at both sides of each of the side walls and defining respective upper ends functioning as wire bending guides,
• a coil assembly including:
• a square magnetic core consisting of a pair of U core pieces;
• a bobbin having two flanges at its both ends, respectively;
• and
• a plurality of edgewise windings each formed of a rectangular wire, provided around the bobbin, and set vertically inside the holder, and
• a core securing plate spring having its both end portions engagingly inserted through respective slot holes of the two side walls,
• wherein the coil assembly is fixedly set inside the holder by means of the two flanges of the bobbin, and the core securing plate spring, and lead wires of each of the edgewise winding are bent at the upper ends of the wire guide strips, then extend along the wire guide strips, and lead out thereby constituting coil terminals.