CMT908-H2-B

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Common Mode Chokes are electrical components often used for EMI suppression, signal interference and noise reduction purposes. One such product in this category is the CMT908-H2-B, a high-frequency common-mode choke that has a wide application field. This article aims to provide an overview of its applications and working principle.

Applications

The CMT908-H2-B is a high-frequency common-mode choke, designed for PCB applications in automotive electronics. Its reasonable size and cost make it ideal for applications such as EMI filters, ESD protection, signal interference reduction, and noise reduction. It can be used in applications ranging from automotive, industrial and consumer electronics, communication systems, medical equipment and even aerospace systems.

The choke is also designed with an optimal combination of inductance, current and DCR value, making it a great choice for EMI filter applications. The choke is available in a wide variety of inductance values and is compliant with RoHS standards, making it an environmentally friendly option.

Working Principle

The CMT908-H2-B works by suppressing potentially hazardous common-mode noise and interference, while allowing desirable signal transmission. It works by inducing two magnetic fields in series with a common ground. This induces currents in opposite directions, which is what helps to suppress the noise. The two inductors allow the transmitted signal to pass while blocking out undesirable interference.

The choke also features two capacitors in parallel with the inductors. This helps to reduce a great amount of high frequency noise. The CMT908-H2-B also features an optimized combination of ESR and ESL values, which helps to further reduce EMI noise. In summary, the CMT908-H2-B can be used for a wide range of applications that require reliable EMI suppression.

Conclusion

In conclusion, the CMT908-H2-B is a high-frequency common-mode choke that can be used for EMI suppression, signal interference reduction, and noise reduction. Its reasonable size and cost make it suitable for a wide range of applications, ranging from automotive, industrial and consumer electronics, to communication systems, medical equipment and aerospace systems. It works by inducing two magnetic fields in series with a common ground, along with two capacitors in parallel with the inductors. This combination helps to reduce EMI noise. All in all, the CMT908-H2-B is an excellent choice for any application requiring reliable EMI suppression, noise reduction and signal interference reduction.

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