150 µH shielded inductor for DC-DC filtering
The Murata LQH43PN151M26L is a drum-core wirewound inductor in the LQH43 series, delivering 150 µH ±20% in a shielded 1812 (4532 Metric) package. Rated for 260 mA continuous current with a 2.83 Ω max DCR, this part is sized for power rail filtering where the DC resistance sets the copper loss and the 260 mA ceiling limits the load it can support without saturating.
Current and saturation headroom
The saturation current (Isat) is 280 mA, sitting 20 mA above the rated current — a 7.7% headroom that keeps the inductance stable under transient overloads up to that point. Self-resonant frequency is 4 MHz, which sets the upper bound for the inductor's impedance peak; above this frequency the component behaves capacitively and loses its inductive filtering action. Inductance is tested at 1 MHz, the standard measurement frequency for this value range, confirming the core material's permeability at that test point.
1812 footprint and board integration
Surface-mount termination with a ferrite core; the shielded construction contains the magnetic flux, so adjacent traces on the same layer see less EMI coupling than an unshielded drum core would produce.