1.5 µH shielded power inductor for DC-DC rail filtering
The Murata LQH32PN1R5NNCL is a 1.5 µH shielded wirewound inductor from the LQH32 series, built for power-supply filtering in space-constrained surface-mount designs. The ferrite core and shield contain the magnetic field, reducing radiated noise into adjacent traces — a practical advantage when the inductor sits near a sensitive ADC or RF front-end on the same board. The 63.6 mΩ max DCR keeps conduction losses under 0.3 W at full rated current — manageable in still air without forced cooling.
Saturation margin and self-resonant ceiling
The 2.6 A saturation current (Isat) sits 24 % above the 2.1 A continuous rating, giving headroom for transient spikes without a hard roll-off in inductance. Below Isat the inductance drop is gradual — the ferrite core saturates softly, not abruptly, so a momentary 2.4 A load step does not collapse the rail. Self-resonant frequency is 70 MHz, well above the 1-2 MHz switching frequency of most DC-DC converters using a 1.5 µH inductor. This means the inductor behaves as a pure inductance in the converter's bandwidth; parasitic capacitance only becomes relevant above 70 MHz, where the part transitions to a capacitive impedance.
1210 footprint and reflow profile
The nonstandard case designation means the footprint matches the industry-standard 1210 pad layout — no special land pattern required. The ferrite core material maintains stable inductance across this range; the DCR increases with temperature per the copper winding's positive coefficient, but the 63.6 mΩ max is specified at 25 °C.
Active production — no end-of-life watch needed
Murata lists the base product number as LQH32PN, indicating the part belongs to a mature, widely deployed series. Tape-and-reel packaging supports volume assembly; the ±30 % tolerance on inductance is typical for power-grade ferrite inductors where DC bias and temperature dominate the variation more than the initial tolerance.