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CORES FOR COMMON MODE CHOKES Overview FINEMET™ common mode chokes (CMC) are compact in size, light in weight and excellent electromagnetic noise attenuation performance because of its high saturation flux density and high permeability. It also has excellent temperature stability. The following is our product lineup respond to your application. FT-3KM K series: Cores for Signal lines, DC power lines and single-phase power lines FT-3KM N series: Cores for three-phase AC power lines FT-3KM F series: Cores for low audible noise during the operation FT-3KM S series: Commom mode choke core designed for bus bar FT-3KL F series: Cores for high saturation current common mode chokes Products Catalogs Product Catalog File Size Page FT-3KM K series HL-FM4 754KB 20 FT-3KM N series 21 FT-3KM F series 22-24 FT-3KM S series   FT-3KL F series   Acrobat Reader Download The files are in Adobe Acrobat Format. To view them you will need to download the Acrobat Reader.