47 µH drum-core wirewound for power and signal filtering
The Murata LQH43MN470J03L is a 47 µH drum-core wirewound inductor in the LQH43 series, rated for 220 mA continuous current with a maximum DC resistance of 1.5 Ohm. Unshielded construction means the magnetic field extends beyond the component body — keep adjacent traces and low-impedance loops at least one part-width away to avoid coupling into the inductor's field. The ferrite core and wirewound construction give a self-resonant frequency of 10 MHz and a Q factor of 35 at 1 MHz, making it a fit for LC filters and DC-DC converter output stages where the switching fundamental sits below 5 MHz.