1. What kind of components are the patch inductor beads?
The patch inductor bead belongs to a high frequency filter. The base material of magnetic beads is ferrite. Silver slurry is printed on the ferrite base material by printing technology. It is made by sintering, cutting and silver plating. It is grey-black in color.
Magnetic beads are mainly used in the field of electromagnetic compatibility to solve some electromagnetic interference problems. For high frequency signals, magnetic beads show high impedance in the circuit; for low frequency signals, magnetic beads show very low impedance; for DC lines, it is similar to a jumper or zero resistance.
The filter of magnetic beads consumes the way of transforming interference signal into heat energy, which will not cause any harm to the useful signal quality and circuit system.
Patch inductor beads
2. The patch inductor beads can be divided into four types according to their applications.
1. Ordinary magnetic beads
The working current of ordinary magnetic beads is relatively small and the working frequency band is relatively wide. Mainly used in circuit control line, signal line, data line, clock, I/O interface, power filter with small working current.
2. Peak magnetic beads
The frequency band range of the spike beads is very narrow, and the chip inductor mainly filters for a specific frequency point. It is mainly used in some control lines, clocks and data lines with high requirements. 2. High current magnetic beads (power magnetic beads)
High current magnetic beads have large working current and small internal resistance (DCR). They are mainly used in filter inductance of power supply.
3. High frequency magnetic beads
High-frequency beads can greatly reduce the frequency of high-frequency signals, and the frequency bandwidth can reach the range of 3G. Mainly used in clock line, data line, signal line and so on.
