| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactor capable of reducing magnetic fluxes leaking outside the core.SOLUTION: A reactor includes a core 1 and a coil C. The core includes a coil arrangement portion 11 that is inserted into the coil and an exposed portion 12 that is not covered with the coil, and is formed by integrating the coil arrangement portion and the exposed portion without a gap. The coil arrangement portion is a hardened molded body containing magnetic powder, which is iron-group metal powder or Fe-based alloy powder, and resin, and the exposed portion is a powder-compressed molded body using the iron-group metal powder or the Fe-based alloy powder. The relative permeability of the coil arrangement portion ranges from 3 or more to 50 or less, and the relative permeability of the exposed portion is higher than that of the coil arrangement portion. |
