| 摘要 |
A reactor 1A of the present invention includes a sleeve-like coil 2, a magnetic core 3 disposed inside and outside the sleeve-like coil 2 to form a closed magnetic path, and a case 4A storing the coil 2 and the magnetic core 3. At least part of the magnetic core 3 (herein, an outer core portion 32 provided on the outer circumferential side of the coil 2) is formed by a composite material containing magnetic substance powder and resin. The case 4A is formed by a bottom plate portion 40 and a wall portion 41 each being an independent member. In the reactor 1A, the coil 2 and the bottom plate portion 40 that is made of a non-magnetic metal material are integrally retained by a resin mold portion 21 formed by an insulating resin. Since the resin mold portion 21 fixes the coil 2 and the bottom plate portion 40, the heat of the coil 2 can be efficiently transferred to the installation target. Accordingly, the reactor 1A has an excellent heat dissipating characteristic. |
