FT cores and ET cores 1.Possess characters of ferrites,which exhibit high permeability and resistivity 2.Repeatable properties High Permeability MnZn or NiZn Ferrite FT & ET CoreGeneral Introduction 1, NiZn ferrite core is one kind of ferrite material, work steadily in big electric current, and magnetic properties of this ferrite chip are determined by chemical composition, porosity, grain size ...