Stacked coils

Abstract

This invention provides a stacked coil that ensures a number of turns of 1.0 or more. The stacked coil (10) is formed by stacking multiple connected units (4a to 4f). Each unit (4a to 4f) has: a through hole (43) formed at the center; a resin layer (44) including an insulating member; a surface coil pattern (45) formed on the surface of the resin layer (44) and including a conductive member; an inner coil pattern (46) formed on the inner surface of the resin layer (44) and including a conductive member; a through hole (47) electrically connecting the surface coil pattern (45) and the inner coil pattern (46); and a connecting portion (48) connecting adjacent units (4a to 4f), which is bent to stack the units (4a to 4f). The number of turns in the current path flowing in the units (4b to 4e), including the surface coil pattern (45) and the inner coil pattern (46), is 1.0 or more.

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