15 µH shielded inductor for DC-DC filter stages
The Murata LQH3NPN150MMEL is a drum-core wirewound inductor in the LQH3 series, delivering 15 µH ±20% in a shielded ferrite core that contains the magnetic field within the 1212 (3030 Metric) footprint. Rated for 620 mA continuous current with a saturation floor of 660 mA (Isat), this part suits low-to-mid current DC-DC converter output filters and power-supply rail smoothing where the inductor sees the full load current.
What the current and DCR ratings mean for your rail
The 620 mA current rating is the thermal limit at 105°C ambient — the inductor can carry this current continuously without exceeding its maximum temperature. The 660 mA saturation current is the point where the inductance drops by 30% typically; above this the filter loses its attenuation and the ripple current rises sharply. With a self-resonant frequency of 15 MHz, this inductor behaves as an inductor up to roughly 5-7 MHz in a typical buck converter — above that the parasitic capacitance dominates and the impedance turns capacitive. For a 1-2 MHz switching regulator, the 15 µH value and 15 MHz SRF leave enough margin. The 1 MHz test frequency for the inductance value matches the typical switching frequency of many point-of-load converters — the 15 µH figure is representative of the inductance the circuit sees at the operating frequency.
Active production and sourcing posture
The tape-and-reel packaging supports automated reel feeding.