REACTOR

摘要

PROBLEM TO BE SOLVED: To provide a reactor capable of reducing a temperature difference between a bottom part side region of a case and an opening side region in a coil.SOLUTION: A reactor comprises: a coil 2 that has a winding part 2b formed by wounding a wire 2w in spiral; a magnetic core 3 that has a part to be arranged in the wiring part; a case 4 in which an assembling body 10 including the coil and the magnetic core is housed; and a radiation member 8A that is arranged so as to cover at least one part of an opening side region of the case in the wiring part. A bottom part of the case includes a metal region to which the assembling body is mounted. The radiation member has a base part 80, and a plurality of radiation projections 82 which is projected toward an outer of the case from an outside surface of the base part, and a resin is included in the radiation projection part and an opposite region opposite to the winding part of an inner side surface of the base part.SELECTED DRAWING: Figure 1