What the ratings mean for your BOM
The LQH3NPH100MMEL is a 10 µH shielded wirewound inductor in the LQH3 series, rated for 1.28 A continuous current with a DCR of 228 mOhm max. That DCR at 1.28 A means about 373 mW of copper loss — a factor in the thermal budget if the part sits in a tight group with other heat sources. The saturation current is 810 mA — below the continuous rating, so if your load draws a transient above 810 mA the inductance will drop. For a DC-DC converter output filter, size the peak inductor current below 810 mA to keep the ripple under control. Self-resonant frequency is 20 MHz. Above that the inductor behaves capacitively, so it won't filter as expected. Keep the switching frequency or the noise frequency of interest well below 20 MHz to stay in the inductive region.
Automotive-grade qualification
Rated AEC-Q200, this inductor is qualified for automotive stress profiles — thermal shock, moisture resistance, vibration, and solder heat. The ferrite core and shielded construction keep radiated EMI low, which matters when the inductor shares a board with sensitive RF or sensor circuits. The 1212 (3030 Metric) footprint is a standard size — no special pad geometry needed for the pick-and-place.