| 摘要 |
PROBLEM TO BE SOLVED: To provide a low loss core piece excellent in bondability to a resin portion, and to provide a reactor.SOLUTION: Core pieces 31m, 32m constituting a magnetic core arranged in and out of a coil formed by winding a wire include a peripheral surface 31s parallel with the magnetic flux of the coil, and to which a peripheral surface resin portion 375 for holding the adjoining core pieces integrally is bonded. The peripheral surface 31s includes a nonconductive region 36 for breaking conduction in the circumferential direction, and a plurality of grooves not passing through the nonconductive region. The nonconductive region and the plurality of grooves are formed by laser processing. |
