In summary, the Schaffner RN choke offers common mode current compensated inductances, attenuating common-mode, or asymmetric interference signals. It is composed of two windings over a ferrite ring core that when combined with suitable capacitors are ideal for filtering RFI on PCBs in AC and DC applications. There are a variety of current ratings, from 0.3A to 10A, available with inductances from 0.4mH to 100mH. The RN series is RoHS compliant, UL recognized, and ENEC approved.