REACTOR

摘要

Disclosed is a small reactor with excellent heat dissipation performance. The reactor (1) comprises an assembly (10), which comprises a coil (2) and a magnetic core (3) on which the coil (2) is disposed, and a case (4) which houses the assembly (1). The case (4) comprises: an installation surface section (40) which is fixed to a fixing target when the reactor (1) is positioned on the fixing target; a side wall section (41) which surrounds the periphery of the assembly (10) and is removably mounted on the installation surface section (40); and a heat dissipation layer (42) formed on the inner surface of the installation surface section (40) and interposed between the installation surface section (40) and the installation-side surface of the coil (2). The installation surface section (40) is formed from aluminum and the side wall section (41) is formed from insulating resin. The heat dissipation layer (42) is formed by an adhesive with good thermal conductivity and excellent insulation properties. The installation surface section (40) can easily form the heat dissipation layer (42) and has excellent heat dissipation, because said section is a different member than the side-wall section (41). The gap between the side-wall section (41) and the coil (2) can be reduced and the side-wall section made compact because the side-wall section (41) is formed from insulating resin.