Common Mode Chokes for Power Line Applications Coilcraft SMT Common Mode Chokes (CMC) are suitable for power line applications. These chokes suppress high-frequency common-mode noise up to 100MHz and offer current ratings up to 10A and isolation (hipot) up to 1500Vrms. Coilcraft SMT Common Mode Chokes are RoHS and REACH compliant. The series provides an ideal solution for use in a wide array of power line circuits, including consumer electronics and industrial applications.