To provide an Mn-Co-Zn-based ferrite which exhibits not only high specific resistance at a standard temperature state (23°C), but also high initial magnetic permeability μi in a wide range from low frequency to high frequency, in a wide temperature range from 0 to 100°C; and a method for producing the same.

The Mn-Co-Zn-based ferrite having characteristics that the initial magnetic permeability μi at 0-100°C is ≥3,000 at 100 kHz and ≥100 at 5 MHz and the DC specific resistance ρ at 23°C is ≥10 Ω×m is obtained by preparing at least two kinds of granulated powders each having a component composition comprising 45.0 to <50.0 mol% Fe2O3, 0.5-4.0 mol% CoO and 15.5-24.0 mol% ZnO, and the balance being MnO and containing, as impurities, <50 mass ppm P, <20 mass ppm B, <30 mass ppm S, and <50 mass ppm Cl, then forming a laminated body having at least two layers by separately charging the granulated powders into a mold in a layered state so that the boundary faces between the layers each becomes parallel to the direction of the magnetic flux line when a magnetic field is impressed to the laminated body, further forming the laminated body by pressing it, and firing the formed body.