MnZn ferrite and MnZn ferrite large core

摘要

PROBLEM TO BE SOLVED: To provide a MnZn-based ferrite having high saturation magnetic flux density Bs and low magnetic loss Pcv at high temperature (120°C).SOLUTION: There is provided a MnZn-based ferrite containing a main component consisting of iron oxide of 65 to 75 mol% in terms of FeO, zinc oxide of 5 to 20 mol% in terms of ZnO, nickel oxide of 0.4 to 2 mol% in terms of NiO and the balance practically MnO and both of tin oxide and chrome oxide as accessory components with sum total content of both in a range of 0.1 to 0.4 pts.mass in terms of SnOand in terms of CrObased on 100 pts.mass of total mass of the above described oxides of the main component and tin oxide of 0.05 to 0.35 pts.mass in terms of SnOand chromium oxide of 0.005 to 0.05 pts.mass in terms of CrO.SELECTED DRAWING: Figure 1