Patent ID: 8282853

Claim:
A NiMnZn-based ferrite containing: a main component comprising 54.0 to 57.5 mol % of iron oxide in terms of Fe 2 O 3 , 2.0 to 7.0 mol % of zinc oxide in terms of ZnO, 0.5 to 4.7 mol % of nickel oxide in terms of NiO, and a remainder of manganese oxide (in terms of MnO); and an accessory component comprising 100 to 1000 ppm by weight of Si in terms of SiO 2 , 800 to 3000 ppm by weight of Ca in terms of CaCO 3 , and 520 to 1000 ppm by weight of Nb in terms of Nb 2 O 5 with respect to the main component; wherein the ferrite has an average ferrite crystal particle size of 2.1 to 8.5 μm.