EH20-1.2-02-3M3

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Common mode chokes are inductive coils that help to reduce electromagnetic interference (EMI) and electromagnetic radiation (EMR) from electrical and electronic systems. EH20-1.2-02-3M3 is a type of common mode choke specifically designed and manufactured by Transtronics. It features two windings placed around a ferrite core, and its small size makes it very suitable for use in compact EMI suppression filter applications.

Application Field

The EH20-1.2-02-3M3 common mode choke is primarily used in combined-mode filter applications. It can be used to reduce EMI and EMR emissions from high power cables and antennas, often used in broadcasting and communications systems. This choke is also used in many power line filter and power supply applications and can be used for providing transient waveform suppression protection to equipment downstream.

Working Principle

The EH20-1.2-02-3M3 common mode choke works by creating a low impedance path for high-frequency current flowing in the same direction in both of its windings. This allows the current to circulate around the core, creating a reverberated, low-inductance magnetic field. The noise currents in both windings are effectively cancelled, resulting in EMI reduction.

At lower frequencies, the impedance of the winding is very low, allowing the noise current to pass through the choke. To reduce this, a parallel capacitor is often connected in order to raise the impedance at those frequencies to a greater extent. This creates a more efficient filter, significantly reducing EMI emissions.

Conclusion

The EH20-1.2-02-3M3 common mode choke presents an interesting solution for applications that require high levels of EMI/EMR and transient waveform suppression. Its compact size and high performance make it a preferred choice for a wide range of filters and tailored suppression applications.

The specific data is subject to PDF, and the above content is for reference