A coil-embedded dust core and a method for manufacturing the coil-embedded dust
core are provided. The coil-embedded dust core comprises a coil formed from a flat
conductor wound in a coil configuration, and a green body consisting of insulating
material-coated ferromagnetic metal particles. This results in a coil-embedded
dust core more compact in size but with larger inductance. A rectangular wire can
be used as the flat conductor. In addition, parts of the coil may function as terminal
sections. In this case, the terminal sections of the coil may be formed wider than
other part of the coil. The coil-embedded dust core is less prone to joint failures
between a coil and terminal sections and to insulation failures of the coil and
the terminal section with respect to the magnetic powder. The coil-embedded dust
core is more compact while achieving larger inductance.