10 µH shielded power inductor for automotive and industrial DC-DC
The Murata LQH32PH100MN0L is a 10 µH shielded wirewound inductor from the LQH32 series, rated for 700 mA continuous current with a 456 mOhm maximum DCR. The 750 mA saturation current (Isat) means the inductance holds within tolerance right up to the rated current — no steep roll-off before the load peak. AEC-Q200 qualification certifies this part for automotive-grade stress screening — temperature cycling, mechanical shock, and bias humidity. It fits power-supply filtering, DC-DC converter output chokes, and EMI suppression in engine-control units, infotainment, and ADAS sensor modules where the ambient temperature stays within -40°C to 85°C.
Parametric fit: DCR, saturation, and self-resonant frequency
The 456 mOhm max DCR sets the I²R conduction loss — at 700 mA the dissipation is roughly 0.22 W, which the 1210 (3225 Metric) body can sink into the PCB copper without exceeding the 85°C ambient ceiling. The 30 MHz self-resonant frequency means the inductor behaves as an inductor up to about 3 MHz in a typical buck converter; above that the parasitic capacitance dominates and the impedance drops. Shielded ferrite core construction contains the magnetic field within the component body — critical when the inductor sits next to a sensitive analog front-end or RF section on the same board. The 750 mA saturation current is only 7% above the rated current, so the core does not saturate under normal load; the margin is tight enough that the designer should verify the peak inductor current in the target converter against the Isat spec.
Active lifecycle and sourcing posture
The 1210 (3225 Metric) footprint is a standard size shared across the LQH32 family, so a second-source inductor from another brand with the same 10 µH, 700 mA, and 456 mOhm DCR profile can drop in without a board spin — but the AEC-Q200 rating is the differentiator for automotive builds where the bill of materials must carry the grade.