BK32164M471-T

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Ferrite beads and chips are generally used for filtering, decoupling and EMI/RFI in the field of electronics. The BK32164M471-T is one type of these interesting components. This article will explain the application field and working principle of this ferrite bead.

Application Field

The BK32164M471-T is a 75 Ohm feed-through chip which can be used as EMI/RFI filter. It is generally placed on the connecting wire between digital and analog circuits. It is particularly effective in areas where EMI/RFI noise is present due to the high signal to noise ratio. This 75 Ohm chip has the ability to protect circuits from the destruction of ESD (electrostatic discharge) strikes. It can also protect the circuit from overcurrent surges and environmental noise in circuits including automotive, consumer electronics, wireless connections, IoT and others.

Working Principle

The BK32164M471-T chip is made up of seven SMT terminals. These seven terminals carry out impedance matching functions in order to decrease interference to the signal. The chip consists of two non-magnetic cores with magnetic material underneath them. The overall magnetic field created by the magnetic material beneath the cores creates a high-frequency choking effect against high-frequency signals. This reduces the amount of interference a signal can get on its route through the circuit. The effect of this ferrite chip is to absorb the signal so that it is attenuated or stopped by the core material.

The performance of this chip can be greatly increased with proper shielding. The ferrite material absorbs and deflects the EMI/RFI and blocks it from entering the PCB. This saves the components from damage due to EMI/RFI exposure. The chip is also highly efficient in cases of ESD strikes and can save the circuit from damage due to high voltage, current or frequency.

Conclusion

The BK32164M471-T is a useful ferrite chip for eliminating EMI/RFI noise and ESD strikes from components. It consists of two non-magnetic cores with magnetic material beneath them. This magnetic material creates a high-frequency choking effect which reduces the amount of interference a signal can get on its route through the circuit. Shielding can further increase the performance of this chip, making it ideal for use in circuits where EMI/RFI noise, overcurrent surges and environmental noise are present.

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