1. Inductors are energy storage components, while magnetic beads are energy conversion (consumption) devices.

2. Inductors are often used in power filtering circuits, while magnetic beads are often used in signal circuits for EMC countermeasures.

3. Magnetic beads are mainly used to suppress electromagnetic radiation interference, while inductors focus on suppressing conductive interference in this regard. Both can be used to address EMC and EMI issues.

The two pathways of EMI, namely radiation and conduction, use different suppression methods for different pathways. The former uses magnetic beads, while the latter uses inductors.

4. Magnetic beads are used to absorb Super high frequency signals, such as RF circuits, PLLs, oscillation circuits, and Super high frequency memory circuits (DDR SDRAM, RAMBUS, etc.)

Add magnetic beads to the input part of the power supply, and the inductor is an energy storage component used in LC oscillation circuits, medium and low frequency filtering circuits, etc. Its application frequency range rarely exceeds 50MHz.

5. Inductance is generally used for circuit matching and signal quality control. General connection and power supply connection.

Use magnetic beads where analog and digital ground are combined. Magnetic beads are also used for signal lines.

The size of the magnetic bead (specifically, its characteristic curve) depends on the frequency of the interference wave that needs to be absorbed by the magnetic bead.

Magnetic beads are designed to resist high frequencies, with low DC resistance and high high-frequency resistance. such as 1000R@100Mhz That is to say, there is a resistance of 1000 ohms for a signal with a frequency of 100M.

Because the unit of magnetic beads is nominal based on the impedance it generates at a certain frequency, and the unit of impedance is also ohms.

The datasheet of magnetic beads usually includes characteristic curves of frequency and impedance.

Generally, the standard is 100MHz, such as 2012B601, which means that the Impedance of the magnetic bead is 600 ohms at 100MHz.

The connection and difference between inductance and magnetic beads, as mentioned above, is to learn more about inductance and focus on gain inductance.