What’s the difference between a magnetic bead and an inductor | GETWELL

The difference between a magnetic bead and an inductor is that an inductor is an energy storage device, while a magnetic bead is an energy conversion (consumption) device.Inductance is mostly used in power filter circuit, focusing on suppressing conductive interference;Magnetic beads are mostly used in signal circuits, mainly for EMI.Below, Getwell professional chip inductor manufacturer will talk about the difference between magnetic beads and inductors.

Chip inductor

Inductive elements and EMI filter elements are widely used in PCB circuit of electronic equipment.These components include chip inductors and chip magnetic beads. The characteristics of these two devices are described below and their common applications as well as special applications are analyzed.

Advantages of using chip inductors:

The advantages of surface mount components are their small package size and their ability to meet the requirements of real space.

Chip magnetic beads

The main function of the chip magnetic bead is to eliminate RF noise in transmission line structure (PCB circuit).The sheet magnetic bead is composed of soft magnetic ferrite material and constitutes a monolithic structure with high volume resistivity.The eddy current loss is inversely proportional to the resistivity of the ferrite material.The eddy current loss is proportional to the square of the signal frequency.

Advantages of using chip magnetic bead:

Miniaturization and lightness.High impedance in the RF noise frequency range eliminates electromagnetic interference in transmission lines.Closed magnetic circuit structure, better eliminate signal crosstalk.Excellent magnetic shielding structure.Reduce the DC resistance to avoid excessive attenuation of the useful signal.

Reasons for using chip beads and chip inductors:

Whether to use chip beads or chip inductors depends largely on the application.Chip inductors are required in resonant circuits.When you need to eliminate unwanted EMI noise, using a chip magnetic bead is the best choice.

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