12 µH at 270 mA — the load-bearing specs
The LQH32NH120J23L is a 12 µH drum core wirewound inductor from Murata's LQH32 series, rated for 270 mA continuous current with a maximum DC resistance of 600 mOhm. The 600 mOhm DCR at 270 mA produces a 43.7 mW I²R loss — negligible in most power rails but worth budgeting in a tight thermal enclosure.
AEC-Q200 and the operating envelope
AEC-Q200 qualification means this inductor passed the automotive-grade stress tests: thermal shock, vibration, and humidity bias per the passive-component standard. Self-resonant frequency is 30 MHz; above that the inductor behaves capacitively, so keep the switching or filtering frequency below 10 MHz for a clean inductive response.
Package and board-fit
Unshielded construction means the stray field couples into adjacent traces — keep a 0.5 mm keep-out zone around the body on a 4-layer board to avoid crosstalk into sensitive analog lines.