CM6460R-105

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Common mode chokes, such as the CM6460R-105, are useful for suppressing unwanted common mode (CM) signals in various applications, such as power supplies and data transmission lines. They provide a reliable electromagnetic interference (EMI) filter solution to manage CM noise problems. The following will discuss the application field and working principle of this CM choke.

Application Field of the CM6460R-105

The CM6460R-105 common mode choke is a compact version of a CM choke, designed for use in systems where space is limited. It is typically used to filter spectrum of common mode noise produced by switching power supplies, motors and other electronic devices. Its wide operating temperature range (-55°C to +125°C) makes it suitable for use in automotive, industrial, and military applications. The size of the CM6460R-105 common mode choke is 5.2mm x 6.2mm x 6.5mm with a weight of 0.5g. It has an outer shield construction with 4 contact pins for easy mounting.

The CM6460R-105 common mode choke can be used in various applications, including PC board level oscillators, automotive electric circuits, medical equipment, industrial-related equipment, and commercial home appliances. It is also suitable for the circuit of printers, DVD players, and power supplies and fast-charging equipment.

Working Principle

Common mode chokes are inductive components that use a magnetic core to filter magnetic fields generated by CM signals. The construction of the CM6460R-105 common mode choke features a four-layer structure, with a winding-filled core and four pins. The core can store generated magnetic fields and filter out common mode noise. A shield made of nonmagnetic material prevents the deposited magnetic flux from leaking, reducing unwanted emissions. The four pins provide a place to connect the line length input and output, forming an inductor of the common mode choke.

When a current flows through the windings, the core produces a concentrated magnetic field at the winding. This magnetic field passes through the CM6460R-105 and links with the output wire, forming an inductive loop.

When an alternating current (AC) passes through the wiring of the device, the magnetic fields are always linked to the windings, and then to the output wiring. This induces a Voltage in the connected wire, which filters out any common mode noise that may be present. The resulting signal is then considered to be a clean signal with minimal CM noise.

Conclusion

The CM6460R-105 common mode choke is a compact, reliable, and robust filter solution for reducing common mode noise in various electronic applications. Its wide temperature range makes it suitable for use in many different environments. It works by using a magnetic core to filter out CM signals and preventing them from being propagated onto the output line. This prevents any noise interference from being passed onto the connected wires.

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