| 摘要 |
PURPOSE:To provide a ferrite resin, which is good in injection moldability and has a high permeability. CONSTITUTION:The mean particle diameter GA of ferrite powder in a ferrite resin is set on the condition of 70mu<=GA<=GA<=130mum, ferrite powders, whose particle diameters G1, G2, G3 and G4 have a relation of G1<G2<G3<G4, are made to contain the ferrite powder and the respective particle diameters and the respective contents of the ferrite powders are respectively set in ranges which are shown by G1<=GA-50mum and 0 to 30wt.%, GA-50mum<G2<=GA and 30 to 50wt.%, GA<G3<=GA+50mum and 30 to 50wt.% and GA+50mum<G4 and 0 to 20wt.%. At this time, the respective firing temperatures T1, T2, T3 and T4 of the ferrite powders having the particle diameters G1, G2, G3 and G4 may be a relation of T4<=T3<=T2<=T1. |
