Disk device with FPC and chip

A disk device comprising:

• a magnetic disk;
• a magnetic head configured to read and write information from and to the magnetic disk;
• a flexible printed circuit board electrically connected to the magnetic head, including
• an insulating layer,
• a first conductive layer disposed on a first face of the insulating layer, and
• a second conductive layer disposed on a second face of the insulating layer, the second face being opposite the first face;
• and
• an electronic component mounted on the flexible printed circuit board, wherein
• the first conductive layer includes a plurality of pads,
• the electronic component includes a plurality of terminals connected to the plurality of pads via solder,
• the second conductive layer includes a plurality of wires,
• the plurality of wires include at least either one or two or more first wires or one or two or more pairs of second wires,
• the one or two or more first wires each include
• a first part disposed apart from the plurality of pads along the second face, and
• a second part having a larger width than the first part, overlapping one of the plurality of pads with the insulating layer interposed in-between the second part and the one pad, and isolated from the one pad by the insulating layer, and
• the one or two or more pairs of second wires each overlap one of the plurality of pads, with the insulating layer interposed in-between the one pad and the second wire pair or pairs.