1.2 µH wirewound in the 1812 footprint
The Murata LQH43MN1R2M03L is a drum-core, wirewound inductor in the LQH43 series, offering 1.2 µH inductance with a ±20% tolerance. Rated for 500 mA continuous current, it presents a maximum DC resistance of 200 mOhm — the DCR figure sets the I²R heating floor for the trace and the inductor body in a power rail filter. Unshielded construction means the magnetic field radiates beyond the component body; keep sensitive traces or low-level analog circuits at least a component-width away to avoid coupling. The ferrite core material handles the 1 MHz test frequency cleanly, and the self-resonant frequency of 100 MHz defines the upper limit for effective filtering — above that the inductor behaves capacitively.
Active lifecycle and sourcing posture
No pin-compatible second-source is listed on the record; the LQH43 series is Murata's own footprint family, so a drop-in replacement would require a parametric search within the same series or a cross-reference from a competing brand's 1812 wirewound offering.
Temperature grade and board-fit parameters
The unshielded body and ferrite core are the main selection constraints: if the application couples the inductor to a nearby magnetic sensor or a noise-sensitive oscillator, a shielded variant from the same LQH43 family would be the migration path.