What is SMT magnetic bead? What is the difference between SMT magnetic bead and SMT inductor 1

Surface mount magnetic beads and surface mount inductors are common passive components in electronic circuits, used to manage current and suppress interference in circuits, but their working principles and application scenarios are different. diode

Firstly, surface mount magnetic beads are an electromagnetic interference (EMI) filter used to suppress high-frequency noise. It is usually composed of a small cylinder made of ferrite material, which has high impedance to high-frequency signals and low impedance to DC or low-frequency signals. Therefore, surface mount magnetic beads are commonly used to filter out high-frequency noise on power or signal lines without affecting DC or low-frequency communication or power supply. At high frequencies, its impedance rapidly increases, serving to block high-frequency signals and prevent them from interfering with other circuit components or propagating to the outside through the line.diode

Surface mount inductors, also known as SMD inductors, are components that can store electrical energy and obstruct AC signals. The basic function of EP20K200EQC240-2X inductor is to resist current changes, that is, to generate self induced electromotive force. They are very common in power filtering, signal coupling, energy storage, delay, and oscillation circuits. Inductors have low impedance for DC signals and almost no obstructive effect, while for AC signals, especially high-frequency signals, inductors will generate high impedance and limit the flow of AC signals.diode