4.7 µH shielded wirewound for DC-DC input/output filtering
The Murata LQH32PB4R7NNCL is a 4.7 µH shielded wirewound inductor in the LQH32 series, built for surface-mount DC-DC converter input and output filter stages where the 610 mA continuous current rating and 1.6 A saturation current define the usable load range.
Rated current vs saturation headroom
Rated 610 mA continuous with a DCR of 186 mOhm max — the copper loss at rated current is about 69 mW, which stays within the 1210 footprint's thermal budget in still air. Saturation current (Isat) is 1.6 A, providing a 2.6× headroom above the rated current — the inductance roll-off starts well above the normal operating point, so the inductor holds its value under transient load steps. Self-resonant frequency of 40 MHz places the useful inductance band below that point — above 40 MHz the component behaves capacitively, so it suits switching regulators switching in the 500 kHz to 4 MHz range.
Shielded construction and temperature grade
Shielded ferrite core construction contains the magnetic flux — adjacent traces or other inductors on a dense board see less coupling, which simplifies the layout for a multi-phase regulator.