Inductors do not have a functional polarity, which make they work equally in either direction. Polarity is not very important in the vast majority of end-use circuits. It has been reported that some inductors perform better when mounted in one particular orientation, due to interaction with nearby components or ground plane conductors. Any asymmetrical performance is very much related to a function of the application, especially board layout. For any applications in which inductor polarity is critical, please contact CODACA.