180 µH, 65 mA — the filtering inductor for automotive noise suppression
The Murata LQH32NZ181J23L is a drum core wirewound inductor in the LQH32 series, delivering 180 µH ±5% inductance from a 1210 (3225 Metric) footprint. Rated for 65 mA with a maximum DC resistance of 10.2 Ohm, this part is sized for low-current filtering and decoupling in automotive electronics — the AEC-Q200 qualification means it passed the stress tests (thermal shock, vibration, humidity) required for under-hood and cabin-grade applications. The unshielded ferrite core construction keeps the self-resonant frequency at 6 MHz, so the inductance holds up well into the low-MHz switching range common in DC-DC converter input/output filters and EMI suppression circuits.
AEC-Q200 and 105 °C ceiling — where this inductor fits on the board
Operating from -40 °C to 105 °C, the LQH32NZ181J23L covers the full automotive temperature grade 1 envelope — suitable for engine-bay-adjacent modules that see 85 °C ambient plus self-heating, as long as the total temperature stays under the 105 °C limit. A Q factor of 40 at 796 kHz indicates moderate AC loss at that frequency — useful for tuned circuits or filter stages where the inductor's Q sets the bandpass sharpness, though the 10.2 Ohm DCR dominates the DC loss budget.