Design-fit note for a 47 µH unshielded wirewound
The LBC2016T470K is a 47 µH unshielded wirewound inductor in the 0806 (2016 Metric) footprint, rated for 110 mA continuous current with a 4.3 Ohm DCR. Its self-resonant frequency of 11 MHz means the inductor's impedance peaks near that point; above it the component behaves capacitively, so this part suits DC-DC converter filtering or low-frequency signal decoupling where the switching fundamental stays well below 11 MHz. The unshielded construction means the magnetic field is not contained by a ferrite shield — adjacent traces or components on the same board layer can pick up stray flux, so keep a clearance of at least one component width from sensitive analog or RF nets.
Parametric boundaries for the BOM
Inductance tolerance is ±10 %, which is the standard precision for power-grade wirewounds in this series; the DCR of 4.3 Ohm sets the I²R loss at 52 mW at the 110 mA rated current — a non-issue for the 0806 package's thermal dissipation in still air. The 2.52 MHz test frequency is the standard measurement condition for inductance at this value — the actual inductance at the application's switching frequency will shift slightly due to core permeability roll-off, typically within ±20 % of the 47 µH nominal.