PURPOSE: To ensure the secure fixing of a toroidal core to a box-shaped mold terminal board and to facilitate its automatic mounting onto a substrate by housing the wire wound toroidal core in a box-shape mold terminal box comprising the box shape mold terminal board and an upper cover plate set up thereon.

CONSTITUTION: A box-shaped mold terminal box 12 comprises a box-shaped mold terminal board 14 and its upper cover plate 15. By mounting a wire wound toroidal core 13 on the box-shaped mold terminal board 14 and covering this toroidal core 13 with the upper cover plate 15, the toroidal core 13 is housed in the box-shaped mold box 12. Also, a notch groove 17 through which to pull out the wire on the toroidal core 13 is provided on both sides of the upper cover plate 15 intersecting an opening 16 orthogonally. On the other hand, on both sides of the box-shaped mold terminal 14 which intersects the opening 16 orthogonally, a plurality of packaging terminals 18 for terminal processing of the wire on the toroidal core 13 which has been pulled out of the notch groove 17 are provided.