HM28-42051LF

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Common Mode Chokes are passive devices used in electrical wiring to reduce or block the flow of common mode (CM) electrical noise on the data signals. They are often used in audio stages, or in the signal path of sensitive High-Frequency (HF) electronic equipment to block unwanted interference, and improve the signal to noise ratio.

The HM28-42051LF is one such device in a special category of Common Mode Chokes due to its low profile, and high current passing capability. It applies a special welding technology to enhance anti-corrosion performance, and is suitable for torque requirements of up to 8Nm.

The HM28-42051LF has a low profile with a height of 4.2MM and a width of 5.1MM. It\'s rated for operating temperatures from -40°C to 85°C, and is capable of passing 5A of continuous current. The origin of the HM28-42051LF is China.

The working principle and main application fields of the HM28-42051LF Common Mode Choke are as follows:

Working Principle

The HM28-42051LF Common Mode Choke is constructed from two separate magnetic cores, and the entire device is then insulated with a high dielectric constant plastic casing. The two cores are wound in opposite directions to create a differential mode magnetic field that opposes the flow of common mode current. This ‘magnetic dampening’ technique is used to reduce or block this type of interference.

Application Fields

The HM28-42051LF is primarily suitable for high-end network appliance, telecommunication equipment, and power supply systems, due to its high current passing capability and relatively low profile. Its anti-corrosion performance makes it suitable for applications exposed to humidity and other environmental conditions.

It can be used inside a variety of electronic circuits, such as filtering circuits, to reduce Common Mode interference from sensitive HF signals, or used as an EMI filter to block unwanted RF signals from entering the signal path.

Many audio systems also use common mode chokes to reduce the background noise from the power supply, filter out the power supply ripple, and reduce high frequency interference. This is especially important in audio eqipment since their capabilities are greatly reduced in the presence of interference and noise.

The HM28-42051LF also has a range of other tentative applications, such as in home appliances, automotive electronics, LED lights, and consumer electronics.

Conclusion

In conclusion, the HM28-42051LF Common Mode Choke is a versatile, low profile, high current passing device designed to reduce or block the flow of Common Mode electrical noise on the data signals. Its applications mainly include Telecommunication Equipment, Power Supply Systems, Home Appliances, Automotive Electronics, LED Lights, and Consumer Electronics.

It is a reliable and cost-effective device with a low profile and good performance in various application fields.

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