2.2 µH at 140 mA — where this fits in a filter or bias circuit
The LQH31MN2R2K03L: Rated 140 mA continuous with a 910 mOhm max DCR, this 2.2 µH wirewound is sized for low-current DC-DC input filters or RF bias-T networks where the DC bias current stays under 100 mA to keep the core from saturating. The self-resonant frequency of 50 MHz and Q factor of 35 at 10 MHz mean the inductor behaves as a pure inductance up through the low-VHF band — useful for filtering switching noise from a 1-10 MHz converter or decoupling a 433 MHz ISM-band supply line where the SRF is well above the operating frequency. Unshielded construction means the external magnetic field couples into adjacent PCB traces — keep a keep-out zone under the component and avoid routing sensitive analog lines directly beneath it.
Last-buy status — what it means for your BOM line
Murata has flagged this part as Last Buy — the final production window is closing, and once Murata's inventory is exhausted, the only channel will be independent surplus. If your design requires a drop-in replacement, the 1206 footprint is a standard size shared by many wirewound inductors — a parametric search for 2.2 µH ±10% in the same package will yield alternatives, but the DCR and SRF will differ and should be re-verified against the circuit's ripple current and self-resonance margin. If you are stocking spares for a long-life product, this is the moment to buy the lifetime quantity.