Inductor

An inductor comprising:

• a wire, and
• a magnetic layer embedding the wire and containing magnetic particles,
• wherein the magnetic layer has
• a first principal surface disposed at one side relative to the wire in a thickness direction with a space between the first principal surface and the wire,
• a second principal surface disposed at an opposite side of the first principal surface relative to the wire with a space between the first principal surface and the second principal surface in the thickness direction, and
• a via penetrating from the first principal surface toward the wire,
• wherein the via has an inner peripheral surface when viewed in the thickness direction, and
• wherein a percent of molten solid obtained from the magnetic particles by a following method is 10% or less:
• on a cross-section across the via, a first point and a second point are located at one side and the other side in a direction in which the first principal surface extends and are kept 50 μm away from an edge on one side of the inner peripheral surface in the thickness direction, and a third point and a fourth point are located at one side and the other side in the extending direction and are kept 50 μm away from an edge on the other side of the inner peripheral surface in the thickness direction,
• an area S0 of a quadrangle having the first point, the second point, the third point, and the fourth point as vertices is obtained,
• an area S1 of the molten solid located inside the quadrangle is obtained, and
• a percent (S1/S0×100) of the area S1 of the molten solid to the area S0 of the quadrangle is obtained.