MAGNETIC ELEMENT

This magnetic element is provided with: a coil assembly in which a coil is arranged on the outer circumference of an inner core; and an outer circumferential core that covers the outer circumference of the coil assembly. The outer circumferential core has an opening into which the coil assembly can be inserted; and a fixing means for fixing the coil assembly into the outer circumferential core. The coil is sealed by a sealing resin. A lid member, which fills a gap between the opening and the coil and reduces the filling amount of the sealing resin, is attached to the opening of the outer circumferential core. 本发明提供一种磁性元件，其是具备在核芯的外周配置有线圈的线圈组件、以及覆盖线圈组件的外周的外周芯部的磁性元件。外周芯部具有能够插入线圈组件的开口部、以及将线圈组件固定于外周芯部内的固定构件。线圈利用密封树脂进行密封。在外周芯部的开口部安装有盖部件，该盖部件填充该开口部中的与线圈之间的间隙，减少密封树脂的填充量。