Active automotive-grade 47 µH power inductor
The Murata LQH3NPH470MMEL is a 47 µH shielded wirewound inductor from the LQH3 series, rated for 610 mA continuous current with a saturation floor of 380 mA. AEC-Q200 qualification means this part is screened for automotive-grade reliability — temperature cycling, mechanical shock, and biased humidity testing per the automotive passive-component standard.
47 µH, 610 mA, 380 mA Isat — the current budget that matters
The 47 µH inductance is tested at 1 MHz; the ±20% tolerance is typical for power-grade ferrite-core inductors in this package class. Rated current is 610 mA, but the saturation current is 380 mA — the inductance rolls off above the saturation floor, so the usable DC current in a buck converter is limited by Isat, not the thermal rating. Maximum DC resistance is 980 mOhm — at 610 mA the I²R loss is about 0.36 W, which the 1212 body dissipates with the ferrite core acting as a heat spreader into the board.
The shielded construction (ferrite core with a magnetic shield layer) contains the flux within the 3.00 mm × 3.00 mm footprint — critical when the inductor sits next to a sensitive ADC or RF front-end on a dense automotive PCB. Surface-mount 1212 (3030 Metric) package, 1.50 mm seated height max — fits standard 3×3 mm pad layouts for power inductors.