What the 47 µH and 100 mA rating mean for your filter or bias line
The LQH32MN470K23L: The 47 µH inductance at 1 MHz test frequency is the value you design the LC cutoff around; at DC bias the ferrite core holds this value until the current approaches the saturation point. The 100 mA current rating is the DC bias limit — push past it and the inductance rolls off as the core saturates, turning your filter into a low-value choke. The 4.3 Ohm max DCR means at 100 mA you lose 430 mW to self-heating; for a power rail filter that heat adds to the board thermal budget, so check the derating if ambient runs near the 85°C ceiling. The 11 MHz self-resonant frequency sets the upper limit for inductive behaviour — above 11 MHz the part looks capacitive. In a 1 MHz buck converter output filter the margin is comfortable; in a 10 MHz switching regulator you are operating near SRF and the effective inductance is already dropping. The unshielded construction means the magnetic field radiates — keep this inductor at least a few millimetres from sensitive analog or RF traces, or plan a shielded alternative if crosstalk shows up in the first prototype.