120 µH wirewound in a 1210 footprint
The Murata LQH32MN121K23L is a drum core wirewound inductor delivering 120 µH ±10% in an unshielded 1210 (3225 metric) surface-mount package. Rated for 75 mA continuous current with a maximum DC resistance of 8 Ohm — the DCR sets the I²R heating floor, so the 75 mA rating already accounts for self-heating at the 85 °C upper operating limit. Self-resonant frequency is 7.5 MHz; above that the component behaves capacitively, so this part suits filtering and energy storage in DC-DC converters and bias networks switching below 2-3 MHz.
Q factor and test conditions
Q is 40 minimum at 796 kHz — the quality factor peaks near the test frequency, so the inductor's AC loss is lowest in the hundreds-of-kHz range typical of mid-frequency power converters. Inductance is tested at 1 MHz, 0.25 V, per the LQH32 series standard — the 120 µH value holds within ±10% at that test point; derate for DC bias per the ferrite core's BH curve.