Difference between Inductor and ferrite bead

Compared with general inductors, ferrite beads have a high resistance component R and a low Q value. These characteristics can be utilized in noise elimination.

The direct current characteristics are also different.

Inductors generally can tolerate comparatively large DC superposition currents, and within this range the DC current does not have much of an effect on the impedance, with almost no change in the resonance point. In contrast, ferrite beads easily reach saturation due to a DC current, and saturation causes the inductance to fall and the resonance point to shift to higher frequencies. Consequently the filter characteristics change, and so due caution is necessary Key differences:

Frequency Response:
Inductors have a more generally consistent impedance across a broader frequency range, while ferrite beads' impedance rises sharply at high frequencies.
Loss Characteristics:
Inductors typically have a lower loss factor (Q) than ferrite beads. Ferrite beads are designed to be more lossy at high frequencies to absorb and dissipate noise energy as heat.
Applications:
Inductors are used for a wider range of applications, including energy storage and general filtering. Ferrite beads are more specifically tailored for noise suppression and EMI filtering at high frequencies.
Construction:
Inductors are typically wound coils of wire, while ferrite beads are often small ferrite cylinders or toroids slipped over a wire