WE-CLFS Line Filters Würth Elektronik WE-CLFS Line Filters offer a 150VAC/DC rating and a 1.5A to 20A current range. The WE-CLFS series includes single-stage, single-stage advanced, and two-stage line filters. The single-stage modules feature a compact design, a discharge resistor, an X-capacitor, a Common Mode choke, and two Y-capacitors. The single-stage advanced modules differ due to their additional X-capacitor and improved differential mode noise attenuation. The two-stage modules add another Common Mode choke and another X-capacitor, allowing extreme differential and common mode noise attenuation. Würth Elektronik WE-CLFS Line Filters are ideal for industrial, household goods, telecommunications, and DC applications.