| 摘要 |
A reactor 1A of the present invention includes one coil 2 and a magnetic core 3. The coil 2 includes a turn portion 2t formed by a spirally wound wire 2w whose conductor is a rectangular wire, and draw-out portions 2d of the wire 2w drawn out from the turn portion 2t. The magnetic core 3 is disposed inside and outside the coil 2 to form a closed magnetic path. At least part of the outer circumference of each draw-out portion 2d is formed by a composite material containing magnetic substance powder and resin. The reactor 1A further includes a mold resin portion 21 that covers the outer circumference of the turn portion 2t and at least part of the draw-out portions 2d to retain the shape of the coil 2. In each corner portion region of the mold resin portion 21 covering corresponding corner portion of the wire 2w at each draw-out portion 2d, the outer circumferential face being brought into contact with the outer core portion 32 is formed by a curved surface. When the bend radius of the outer circumferential face of the corner portion region is R1, the bend radius R1 is greater than 0.5 mm. |
