18 µH, 110 mA, 1008 footprint — the BOM-fit numbers
The Murata LQH2HNH180J03L is a drum-core wirewound inductor in the LQH2 series, delivering 18 µH ±5% with a 110 mA current rating and 2.07 Ohm DCR in a shielded 1008 (2520 Metric) package. The 2.07 Ohm DCR means a 110 mA load dissipates about 25 mW in the winding — check the thermal derating if the ambient exceeds 85°C, though the part is rated for continuous operation up to 125°C. A 22 MHz self-resonant frequency sets the upper bound for inductive behavior — above that frequency the impedance becomes capacitive, so this part suits DC-DC converters and EMI filters switching below a few MHz.
AEC-Q200 qualification means the inductor has passed the automotive-grade passive-component stress tests: thermal shock, humidity bias, mechanical shock, and solder heat resistance per the AEC-Q200 rev D specification.
Board-fit and sourcing posture
Surface-mount ferrite core construction with ±5% tolerance keeps the inductance within tight limits for LC filter cutoff frequencies and buck-boost regulator compensation loops.