| 摘要 |
<p>A ferrite core (1) as a noise absorption part is formed in a bead shape having a hollow section (2). This ferrite core (1) is used by inserting in the hollow section (2) a body from which noise is absorbed (3) such as a cable. Ferrite material which forms the ferrite core (1) comprises as main components Fe, Zn and Mn, and the content of each component Fe, Zn and Mn, calculated respectively as Fe2O3, ZnO and MnO, is Fe2O3: 64-70 mol%, ZnO: 7-13 mol%, and MnO: balance. In this ferrite material, an Nb component, calculated as Nb2O5, is contained in a range of 0.01-0.05 parts by weight with respect to 100 parts by weight of the main components. According to the present invention, a ferrite material which has excellent noise absorption performance and a noise absorption part which uses this ferrite material can be achieved.</p> |
