SUBSTRATE AND SUBSTRATE PRODUCTION METHOD

摘要

Disclosed is a substrate (1) used, for example, for motor control and which has a coil (5) which is a choke coil. An electronic component mounting section (9) is formed on the substrate (1) and an internal circuit conductor is exposed to the exterior. The sections other than external connection sections, such as the electronic component mounting section (9), are covered by a substrate forming resin to form an injection molded substrate (3) and the coil (5) provided to the substrate (1) (the injection molded substrate (3)) is for smoothing an externally input current. A core section (7) is formed on the coil (5). The core section (7) is formed by core forming resin. The core section (7) is formed such that at least a core part (6) of the coil (5) is covered.