WE-ExB Common Mode Chokes Würth Elektronik WE-ExB Common Mode Chokes are current-compensated common-mode chokes with two cores, MnZn and NiZn. The chokes are designed for network applications with various interface-suppressing features across a broad frequency range. A two-stage filter can be constructed with a single WE-ExB. The series features broadband attenuation characteristics and high current capability with a 250VAC max rated voltage and a 1500VAC insulation test voltage. The inductance values range from 2 x 47µH to 2 x 1000µH with a ±50% tolerance and DC resistance range from 2 x 4.6mΩ to 2 x 42mΩ. Würth Elektronik WE-ExB Series Common Mode Chokes operate from 4.5A to 15A max rated current range and are designed for industrial power supplies.