4.7 µH shielded wirewound for DC-DC input/output filtering
The Murata LQH2HPN4R7MGRL is a 4.7 µH shielded wirewound inductor in the LQH2 series, rated for 1 A continuous current with a 360 mOhm maximum DCR. The 1.09 A saturation current (Isat) sits just above the rated current, meaning the inductance holds flat up to the full 1 A load before rolling off — a tight but usable margin for a rail that never exceeds the continuous rating.
Self-resonant frequency and SRF headroom
With a self-resonant frequency of 50 MHz, this inductor stays inductive well above the switching frequencies of most buck converters (typically 1–5 MHz), so the SRF does not limit the filter design. The 1 MHz test frequency for the inductance value is standard for this inductance range and confirms the part is characterized at a typical converter switching speed.
1008 footprint and board integration
The shielded construction contains the magnetic flux, reducing radiated EMI that could couple into nearby sensitive traces or RF stages — a practical concern when the inductor sits close to an ADC or wireless front-end.