TDK ACM Series Common Mode Filters feature excellent common mode impedance and noise suppression in a compact case. The low profile and small size make these TDK common mode filters optimal for surface mounting. ACM series devices are designed as a power line noise countermeasure for electronic equipment. New! The product line now includes ACM-E Common Mode Filters for high-speed differential signal line and general signal line uses. ACM-E devices are downsized, low height wound type chip common mode filters that maintain required common mode filter characteristics. Impedance for common mode noise can clear 1000Ω(100MHz). The series also has excellent EMC suppression. Differential mode impedance is suppressed, meaning there is virtually no affect on high speed signals.