| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactor capable of conducting a large current of about 20 A-60 A.SOLUTION: A reactor comprises a soft magnetic core; a coil having such a structure that a wound conductor foil and an insulation separator are overlaid and wound; a thin long plate-like leading terminal 2 on which the terminal conductor foil is laminated; and an external connection terminal. The coil is formed by winding the wound conductor foil and the separator around the soft magnetic core, and the leading terminal 2 is provided in a winding direction end of the wound conductor foil, and is conductively connected to the external connection terminal by welding a tip of the leading terminal 2 pulled from the wound conductor foil. A welding part at the tip forms a recess, and a welding center part 221 that is a center of the recess has at least one conical or pyramidal indentation having a peak point. A welding peripheral edge 222 that is a peripheral edge of the recess is constituted by a curved face. |
