Inductor array component and inductor array component built-in substrate

An inductor array component comprising:

• a substantially flat plate-shaped magnetic main body;
• a first inductor wiring and a second inductor wiring disposed on a same plane in the main body and adjacent to each other;
• a plurality of first vertical wirings extending from sides of a first end and a second end of the first inductor wiring and sides of a first end and a second end of the second inductor wiring, respectively, in a first direction of a normal direction with respect to the plane so as to penetrate through inside of the main body and being exposed on a side of a first main surface of the main body;
• and
• a plurality of second vertical wirings extending from the sides of the first end and the second end of the first inductor wiring and the sides of the first end and the second end of the second inductor wiring, respectively, in a second direction of the normal direction with respect to the plane so as to penetrate through the inside of the main body and being exposed on a side of a second main surface of the main body,
• wherein a first pair of one of the plurality of the first vertical wirings and one of the plurality of the second vertical wirings has cross-sectional areas different from each other.