A monolithic ceramic electronic component includes a low-permeability coil
portion formed by stacking low-permeability ceramic green sheets, a first
coil and a relatively large number of pores, and a high-permeability coil
portion formed by stacking high-permeability ceramic green sheets, a
second coil and a relatively small number of pores. The first coil and
the second coil are electrically connected in series to form a spiral
coil. The coil portion composed of a ferrite ceramic having a small
number of pores has a high permeability and a high dielectric constant,
and the coil portion composed of a ferrite ceramic having a large number
of pores has a low permeability and a low dielectric constant.