TRANSFORMER, MAGNETIC CORE FOR TRANSFORMER, Mn-Zn-BASED FERRITE AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an Mn-Zn-based ferrite of low power loss at a high frequency (for example, 500 kHz).;SOLUTION: The Mn-Zn-based ferrite contains, as principal components, Fe₂O₃ at 55mol% or higher and ≤58mol%, ZnO at 0mol% or higher and 10mol% and consists of the balance substantially MnO and contains, as auxiliary components, Li₂O at 0.01 to 0.17wt%, CaO at 0.05 to 0.28wt%, and SiO₂ at 0.005 to 0.04wt%. The average crystal grain size of the particles constituting the ferrite is 3 to 8 μm.;COPYRIGHT: (C)2005,JPO&NCIPI