A reactor includes a core, a resin cover provided around the core, and a coil disposed around the core at the external side of the resin cover. The coil includes a conductive wire having a self-fusing layer formed on the surface of the conductive wire, and the adjoining conductive wire portions are bonded together by the self-fusing layer. The resin cover includes a bonding portion provided at a part of the resin cover and facing the end portion of the coil, and the end portion of the coil are bonded with the resin cover by an adhesive at the bonding portion.