1. material: Mn-Zn 2. High permeability , low-power loss 3. ... used for flyback transformers in B/W and color TV set. EI CORE Applications:Various kinds of transformers and chokes.Antenna ferrite ... core, ferrite rod cores, soft ferrite core, high permeability ferrite cores, aetd ferrite core, n87 ferrite core, ef20 ferrite core, round ferrite core, L shape ferrite core ...