820 nH, 2.8 A — DC-DC filter fit
The Murata LQH43CNR82M33L is a drum-core wirewound inductor in the LQH43 series, rated 820 nH at 1 MHz test frequency with ±20% tolerance. The self-resonant frequency of 130 MHz places the usable inductance band well above typical switching-regulator frequencies (100 kHz–2 MHz), so the inductor behaves as a pure inductive element in the loop without capacitive crossover. The unshielded construction means the external field couples into nearby traces — keep a ground plane under the footprint or allow 2–3 mm keep-out to adjacent sensitive nodes.
1812 footprint, surface-mount assembly
The ferrite core and wirewound construction are reflow-solder compatible; the part handles standard lead-free profiles up to 260 °C peak.