AEC-Q200 qualified 33 µH shielded inductor for automotive and industrial power rails
The Murata LQH3NPZ330MMEL is a 33 µH shielded wirewound inductor in the LQH3 series, built for DC-DC converter output filtering and power-line smoothing in environments that demand AEC-Q200 qualification. Its 460 mA continuous current rating and 440 mA saturation current (Isat) define the usable load — the inductor remains within its linear region up to the saturation limit, after which inductance drops sharply and ripple current rises. A 660 mOhm maximum DC resistance sets the I²R conduction loss; at 460 mA the self-heating from DCR alone is roughly 140 mW, which must be factored into the ambient temperature derating for the 105°C maximum operating limit.
Shielded ferrite core construction for EMI-sensitive circuits
The drum-core ferrite construction with magnetic shielding contains the flux field, reducing radiated emissions into adjacent traces and components — important for automotive ECU layouts where switching noise couples into sensor signal chains. The 8 MHz self-resonant frequency (SRF) means this inductor behaves inductively well below 8 MHz; above SRF the impedance becomes capacitive, so it is suited for switching frequencies up to roughly 2-3 MHz where the margin to SRF is adequate. Inductance is tested at 1 MHz, which matches common DC-DC switching frequencies in automotive and industrial power stages.
Surface-mount footprint and temperature grade
Supplied in tape-and-reel packaging (Cut Tape also available), compatible with standard pick-and-place assembly for high-volume production.