What this 15 µH wirewound inductor is for
The Murata LQH31MN150J03L is a 15 µH drum-core wirewound inductor in the LQH31 series, built for general-purpose filtering and decoupling in low-current signal paths. Rated for 90 mA continuous current with a 3.9 Ohm max DC resistance, it fits applications where the DC bias is modest and the voltage drop across the DCR is tolerable — think bias tee chokes, LC filter stages, or DC-DC converter output inductors in the milliampere range. The unshielded construction means the magnetic field couples into nearby traces — keep a ground plane under the footprint and watch the clearance to sensitive analog lines.
Surface-mount, supplied on tape and reel or cut tape; the ferrite core and wirewound construction mean the part is polarity-insensitive, so orientation on the pick-and-place reel is the only thing to get right.
Lifecycle — Last Buy status
A functional replacement will likely come from the same LQH31 family or a similar 1206 wirewound inductor with matching inductance, current, and DCR.
Sourcing reality for this inductor
Because the LQH31MN150J03L is in Last Buy status, new stock is limited to existing distributor and surplus inventories. We source it through independent channels and confirm availability and current pricing at quote time against your BOM quantity. For a replacement search, the key parametric targets are 15 µH, ±5%, 90 mA min current rating, and 3.9 Ohm max DCR in a 1206 unshielded package — any substitute must hold those numbers to avoid changing the filter corner frequency or the DC bias drop.