A first dimension of each of a first connection portion 12 and a second connection portion 14 in the direction in which a pair of side surfaces 2e and 2f face each other is smaller than an inner diameter W2 of a coil 8 in the direction and is larger than a width W1 of each of a plurality of coil conductors in the direction. A second dimension of each of the first connection portion 12 and the second connection portion 14 in the direction in which a pair of main surfaces 2c and 2d face each other is larger than a thickness H1 of each of the plurality of coil conductors in the direction and is smaller than a height H2 of the coil 8 in the direction.