Patent ID: 8587400

Claim:
A laminated inductor used as a choke coil in power supply circuits, comprising: a rectangular parallelepiped-shaped laminated chip having: a plurality of magnetic material layers constituted by Ni—Zn—Cu ferrite, a plurality of conductive layers that are laminated via the magnetic material layers to constitute a coil, and at least one nonmagnetic layer constituted by Ti—Ni—Cu—Mn—Zr—Ag dielectric and formed in a manner contacting a plurality of the magnetic material layers, the nonmagnetic layer being constituted by a dielectric whose main component is TiO 2 and which also contains NiO, CuO, Mn 3 O 4 , ZrO 2 and Ag 2 O or Ag, wherein the laminated chip has an inter-diffusion layer at a bonded interface where the Ni—Zn—Cu ferrite of the magnetic material layer and the Ti—Ni—Cu—Mn—Zr—Ag dielectric of the nonmagnetic layer are inter-diffused; and at least one pair of external electrodes provided at ends of the laminated chip and electrically connected to ends of the coil.