Power-line common-mode suppression for DC rails
The TDK ACM7060-301-2PL-TL01 is a 2-line common-mode choke from the ACM series, designed to filter conducted EMI on DC power buses. It presents 300 Ω of impedance at 100 MHz, which is where most switching-regulator noise peaks — the choke knocks down common-mode currents before they radiate off the cable or PCB edge. The 80 VDC rating gives headroom for 48 V telecom buses and 60 V automotive transient peaks.
The footprint is standard for power-line common-mode chokes — four pads, two per winding, with the core sitting flat on the board. No special keep-out zone required, but keep the choke away from low-level analog traces to avoid coupling the suppressed noise into sensitive nodes.