PURPOSE: To manufacture, by a simple means, a surface mounting type choke coil in which a toroidal choke coil has been sealed.

CONSTITUTION: An insulating case 9 on which terminals are installed so as to protrude from opposite side faces is prepared. A toroidal common-mode choke coil 7 is housed in the insulating case outgoing wires are entwined around roots of the terminals. A plurality of insulating cases in which choke coils have been housed are collected; a dip soldering operation is executed to entwined parts. Combined products of the insulating cases with the choke coils are placed so as to be bridged on two juxtaposed beltlike metal support plates 13; the terminals 11 are fixed to the beltlike metal support plates by a spot welding operation. A plurality of combined products are arranged on the beltlike metal support sheets at prescribed intervals. The combined products are loaded in a sealing metal mold by using the sheetlike metal support plates as references they are sealed with an insulating resin. The terminals are cut; sealed and molded bodies 14 are cut off from the beltlike metal support plates; then, the terminals are shaped to required shapes.