BK20104L100-T Filters

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Ferrite Beads and Chips are widely used in various industries to control current and reduce noise levels in a variety of applications. These components interact with electromagnetic waves in a complex manner. One such component is the BK20104L100-T, one of the most commonly used Ferrite Beads and Chips. This article will discuss the application field and working principle of the BK20104L100-T, so that readers can gain a better understanding of this important component.

The Application Field

The BK20104L100-T Ferrite Beads and Chips can effectively reduce both conducted and emitted EMI levels. This makes them ideal for EMI suppression of low frequency (100kHz to 1GHz) noise impacting power and signal lines in applications such as automotive, home electronics, consumer electronics, battery chargers, LED drivers, and other power electronics products. They are often used to isolate power supplies from data lines, improving the reliability of data communication within the system.

The BK20104L100-T is a non-shielded component. This provides maximum flexibility in application design and eliminates the need for additional shielding. The component is designed to tolerate maximum current levels and can resist temperatures up to 105°C without derating. Due to its small size, it is ideal for space-constrained applications. It is also RoHS compliant, making it safe for use in a variety of industries.

Working Principle

The BK20104L100-T uses a combination of inductance, capacitance, and resistance to reduce both conducted and emitted noise in applications. Its low DCR (direct current resistance) results in high current handling capability. The component has a very low distributed capacity, meaning that it has a larger effective inductive reactance at higher frequencies, allowing for better EMI suppression in the frequency range of 100kHz to 1GHz.

The BK20104L100-T is designed with a toroidal shape. This is beneficial because it can better surround a wire in a pattern that mimics inductance. The toroidal shape ensures that the transmitted energy is better distributed and maximizes the inductance of the component. The result is that the BK20104L100-T is able to reduce high frequency noise while allowing for efficient power distribution due to its low DCR.

Conclusion

The BK20104L100-T Ferrite Beads and Chips are a versatile and highly effective solution for many EMI suppression applications. The component’s toroidal shape allows it to better surround a wire in a pattern that mimics inductance, resulting in better EMI suppression at high frequencies. Its low DCR ensures maximum current handling capabilities and its small size is ideal for space-constrained applications. Finally, its RoHS compliant construction ensures that the component can be safely used in a variety of industries.

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