To provide a laminated coil component in which the DC superposition characteristics are enhanced without causing any increase in the DC resistance, and the stress that may be generated in a magnetic material is reduced.
A laminated coil component (11) includes a magnetic material part (2) formed by laminating magnetic material layers, and a conductor part (3) formed by interconnecting a plurality of conductor pattern layers, arranged between the magnetic material layers, in a coil-shape while penetrating the magnetic material layers and by being embedded in the magnetic material part (2). The conductor part (3) consists of a conductor containing silver, the magnetic material part (2) is composed of a sintered ferrite material containing Fe2O3, NiO, ZnO and CuO, the ratio of CuO content of the magnetic material part (2) in a region near the conductor part to CuO content of the magnetic material part (2) in a central region is 0.2-0.5, and at least one cavity is formed in the periphery of the conductor part of the magnetic material part.
| WO/2020/055710 | BALANCED, SYMMETRICAL COIL |
| JP6138032 | A laminating circuit provided with an integrated circuit and it |
YAMANAKA HIROMITSU
OIWA NAOMASA
Kyousei Tamura
Yoshida Tamaki