Reactor

Abstract

To provide a reactor with which resin can fully be packed between a core and a coil with ease, and in which the core can easily be handled when the reactor is manufactured. The reactor includes: a coilformed with paired coil elementsA andB that are made of a spirally wound wire, the coil elements being coupled to each other in a paralleled state; internal core portionsthat are fitted into the coil elementsA andB to structure a part of an annular core; and exposed core portionsthat are exposed outside the coil elementsA andB to couple the internal core portionsto each other, to thereby form the rest of the annular core. The reactor includes an external resin portion that covers at least a part of an assembled productA made up of the coiland the core. An interval between the inner end faceof the exposed core portionand the end face of the coilis 0.5 mm to 4.0 mm, whereby the resin can easily be packed between the coiland the core