To accurately select which common mode will support application needs, see the diagram here. Würth uses Nickel Zinc for wideband and higher frequency applications and Manganese Zinc for lower bandwidth and frequency applications. The SL family of parts support data lines with typical currents ranging from 300mA to 5.6A. The WE-SL5 can handle currents to 2.5A but Würth has recently released two new WE-SL5 HC (high current) parts handling currents to 3.5A and 5A. The WE-SL2 is the device that was discussed earlier utilizing either sectional or bifilar windings. These can handle up to 1.6A.