390 µH drum core wirewound inductor, rated 45 mA
The Murata LQH32NH391J23L is a drum core, wirewound inductor in the LQH32 series, offering 390 µH inductance with ±5% tolerance. The unshielded construction is paired with a ferrite core material, and the part is qualified to AEC-Q200, meaning it has passed automotive-grade stress tests for temperature cycling, moisture resistance, and mechanical shock per the AEC-Q200 passive component qualification standard. The self-resonant frequency of 5 MHz sets the upper frequency boundary where the component transitions from inductive to capacitive behavior; below 5 MHz, the 390 µH value is valid for filtering, DC-DC converter output chokes, and EMI suppression in power lines.
AEC-Q200 qualification and deployment context
The ferrite core and wirewound construction provide stable inductance over temperature, though the unshielded design means flux leakage may couple into nearby traces or components; a shielded part is preferred when the inductor sits adjacent to sensitive analog or RF circuits. Tape & Reel (TR) and Cut Tape (CT) packaging options are available, supporting both high-volume pick-and-place and prototype runs.