150 µH, 130 mA — the two numbers that decide the BOM line
The LQH43MN151J03L is a Murata drum-core wirewound inductor from the LQH43 series, rated 150 µH at 1 MHz test frequency with a ±5% tolerance — tight enough for LC filter poles where the inductance tolerance sets the corner frequency spread.
Q factor and self-resonant frequency — filter and resonant circuit fit
A Q of 40 at 796 kHz means the inductor's reactance-to-resistance ratio is high enough for bandpass and tank circuits in the low-MHz range — the 5.5 MHz self-resonant frequency is the upper bound where the winding capacitance cancels the inductance, so keep the operating frequency below ~1.8 MHz (roughly one-third of SRF) for the inductor to behave as an inductor. The unshielded construction means the external magnetic field couples into nearby traces — keep sensitive analog or RF routing at least one body width (4.5 mm) away, or budget for a shielded part if the layout is dense.
1812 footprint and surface-mount assembly
The ferrite core material gives stable inductance over temperature up to 85 °C, but the unshielded drum construction means the inductance saturates gradually — the 130 mA rating is the point where inductance typically drops 10 %, not a hard magnetic saturation cliff.