WE-CMB NiZn Common Mode Power Line Inductors Würth Elektronik WE-CMB NiZn Common Mode Power Line Inductors offer high suppression rates of asymmetric interference at high and medium frequencies as well as high interference stability against RF interference and burst signals. These chokes feature a nickel-zinc core material and a compact size. They provide noise suppression up to 300MHz and have an operating temperature range of -40°C to +125°C. Würth Elektronik WE-CMB NiZn chokes are designed for use in power electronics and power line input/output filters. They are also optimized for burst signals.