Split emi suppression ferrite cable cores meisongbei sf 110b a cylindrical split ferrite cable core that can take a max cable diameter of 110mm the core has an impedance of 45omega at 25mhz and 115omega at 100mhz this device will greatly reduce both common and differential mode emirfi and is a cost effective solution for retrofit and post assembly use for internal and external power and data cables meisongbei sf 110b 110mm split ferrite cable core