4.7 µH Shielded Inductor – Parametric Fit for DC-DC and Filtering
The Murata LQH3NPN4R7MGRL is a 4.7 µH shielded wirewound inductor in the LQH3 series, built on a ferrite drum core with a ±20% tolerance band. Rated for 910 mA continuous current with a saturation floor of 850 mA — the usable DC load sits just below the point where inductance starts to roll off, so a converter pulling 800 mA has roughly 50 mA of margin before the core saturates.
DC Resistance and Copper Loss Budget
Maximum DC resistance is 168 mOhm — at the full 910 mA rating, the I²R copper loss reaches about 139 mW, which is the dominant heat source inside the 1212 body. The 27 MHz self-resonant frequency means the inductor behaves as an inductor well into the low-MHz switching range; above that the parasitic capacitance dominates and the impedance turns capacitive.
Footprint and Board Integration
The shielded construction reduces magnetic coupling to adjacent traces and components, which matters when the inductor sits near a sensitive analog front-end or a high-impedance feedback node.