Common-mode suppression for DC power rails
The TDK ACM4520-142-2P-TL000 is a two-line common-mode choke from the ACM series, rated for 1.5 A continuous current on a 50 VDC power rail. Its 1.4 kOhms impedance at 100 MHz targets conducted EMI on the DC bus — common-mode noise riding on the supply pair gets attenuated before it reaches the load or radiates from the cable.
DC resistance and thermal budget
The 1.5 A rating is the continuous current limit; derate for ambient above 85°C per the standard power derating curve for ferrite cores.
Surface-mount footprint and placement
The 4-pad layout provides separate input and output paths for each of the two lines, keeping the common-mode current path through the ferrite core. Tape-and-reel packaging supports automated pick-and-place.
