1.bobbin|transformer bobbin|coil bobbin 2.bobbin range:EFD,EE,EF,EPC, ... ,RM,UU,EC 3.supply the matched ferrite core bobbin| transformer bobbin| plastic bobbin| ferrite bobbin| coil bobbin core range:EE ... . · EC series applied in the linear filter ,current tranformer,smoothing choke coil,drive transformer For more details of this bobbin,please reference ...