NiCuZn-base ferrites and electronic parts using the same

摘要

An NiCuZn-base ferrite of the invention comprises as main components an iron oxide in an amount of 45.0 to 49.0 mol% on Fe<Sub>2</Sub>O<Sub>3</Sub> basis, a copper oxide in an amount of 5.0 to 14.0 mol% on CuO basis and a zinc oxide in an amount of 1.0 to 32.0 mol% on ZnO basis with a nickel oxide accounting for the rest mol% on NiO basis. With respect to the main components, a bismuth oxide is contained in an amount of 0.25 exclusive to 0.40% by weight on Bi<Sub>2</Sub>O<Sub>3</Sub> basis, and a tin oxide is contained in an amount of 1.00 to 2.50% by weight on SnO<Sub>2</Sub> basis. The invention ensures a leap upward in direct-current bias characteristics.