A plurality of capacitors and a holding body constructed to hold the plurality of capacitors. Each of the plurality of capacitors includes a semiconductor substrate, a first electrode layer, a dielectric layer, a second electrode layer, and an outer electrode. Among a first capacitor and a second capacitor of the plurality of capacitors, the second capacitor has a shape different from a shape of the first capacitor in at least one of the first electrode layer, the second electrode layer, and the outer electrode.