DATASHEET EMC/EMI Products FN 409 75 VDC Input PCB Filter Rated currents from 3 to 13 A, 75 VDC Approvals Very compact PCB-mounting design Exceptional attenuation performance High frequency noise compression FN 409 PCB filters are designed to surpress common and differential-mode noise on DC voltage lines. The suppression performance is special designed to fulfill the requirements for high frequency switching DC/ DC converter modules. FN 409 filters can also be used Performance indicators to filter the output current of switch-mode power supplies in applications with intelligent power distribution. Features and benefits High common and differential-mode noise suppression Rated currents up to 13 A at 75 VDC Small form factor Good thermal conductance Typical applications Technical specifications Input or output filter for high frequency DC/DC 75 V Maximum continuous operating voltage converters Rated currents 3 to 13 A DC output filter for switch-mode power supplies High potential test voltage VI1/VI2 > GND 1500 VDC for 2 sec Computer and office automation equipment VI1 > VI2 100 VDC for 2 sec Telecom equipment Temperature range (operation and storage) -40 C to +100 C (40/100/21) Input/output filter within DC power distribution Design corresponding to UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939 networks Flammability corresponding to UL 94 V-0 MTBF 40C/230 V (Mil-HB-217F) 4,450,000 hours Typical electrical schematic2 EMC/EMI Products Schaffner Group Datasheets 11 Oct 2018 Filter selection table Filter Rated current Inductance Capacitance DC Resistance R Input/Output Weight 50 C (40 C) L L1 Cx Cy 25 C per path connections A mH mH nF nF m g FN 409-3-02 3 (3.2) 2.9 4700 4.7 86 -02 30 FN 409-6.5-02 6.5 (7) 0.5 4700 4.7 18 -02 30 FN 409-13-02 13 (14) 0.08 0.18 4700 4.7 7.8 -02 47 Typical filter attenuation Per CISPR 17 A = 50 /50 sym B = 50 /50 asym C = 0.1 /100 sym D = 100 /0.1 sym 3 A types 6.5 A types 13 A types Mechanical data 3 and 6.5 A types 13 A types All dimensions in mm 1 inch = 25.4 mm Tolerances according: ISO 2768-m / EN 22768-m