22 µH wirewound in a 1206 footprint
The LQH31MN220K03L: It's rated for 85 mA continuous current with a maximum DC resistance of 4.03 Ohm. Unshielded construction means the magnetic field extends beyond the component body — keep sensitive traces or other magnetics at least a part-width away on the layout to avoid coupling.
Q factor and self-resonant frequency
Q factor is 40 at 2.5 MHz, and the self-resonant frequency sits at 14 MHz. Above that frequency the inductor behaves capacitively — the 22 µH rating holds only below SRF, so filter designs should stay well under 14 MHz. Operating temperature range is -40°C to 85°C, which covers most indoor and automotive-cabin environments but not under-hood or high-temp industrial zones.
Last Buy — sourcing window is open
Murata has marked the LQH31MN220K03L as Last Buy. This means the manufacturer has announced end-of-life and is accepting final orders — once that window closes, the only source will be surplus or broker inventory. For a BOM that already qualifies this inductor, now is the time to secure lifetime buy quantities or identify a drop-in replacement. No official successor is listed in Murata's LQH31 family.