The LQH2HPN3R3MJRL: That profile fits under a 1.2 mm board stack or a low-profile shield can on a 0.8 mm PCB. Shielded ferrite core construction contains the magnetic field, so adjacent traces on a dense layout see less coupled noise than an unshielded drum core would radiate.
What the 3.3 µH and 850 mA mean for your DC-DC filter
3.3 µH at ±20% tolerance with a 1.45 A saturation current — the inductance holds within 20% of nominal up to that DC bias. The 850 mA continuous current rating is the thermal limit set by the 156 mOhm max DCR; at full load the I²R loss runs about 113 mW, which the 1008 body dissipates without exceeding the 105°C temperature ceiling. The 45 MHz self-resonant frequency means the inductor looks inductive well above the switching frequency of most 1-2 MHz buck converters — the parasitic capacitance across the winding does not bypass the inductance until you push past 45 MHz.
Last Buy — what it means for your BOM
Murata has marked the LQH2HPN3R3MJRL as Last Buy — it is not for new designs. A parametric search for a shielded 3.3 µH inductor in the 1008 footprint with a similar DCR and saturation current is the migration path for a new design.