Inductance, current rating, and the margin that matters
The LQH32PH3R3NN0L is a shielded drum-core wirewound inductor from Murata's LQH32 series, rated 3.3 µH at 1 MHz test frequency with ±30% tolerance. Its 1.2 A current rating sits just below the 1.25 A saturation current — the 0.05 A gap means the inductance holds flat through the full rated range, but the saturation knee is close enough that a transient above 1.25 A will cause a sharp drop in inductance.
Automotive qualification and deployment context
The shielded ferrite core construction contains the magnetic field within the 3.2 mm x 2.5 mm x 1.7 mm footprint, reducing radiated EMI that could couple into nearby signal traces on a dense PCB. The self-resonant frequency of 50 MHz means the inductor behaves as an inductor up to roughly 50 MHz — above that the parasitic capacitance dominates and the impedance turns capacitive, so it is best used in DC-DC converters and filtering circuits switching below 10 MHz.