CM3322U610R-10

Voltage Rating - AC:	--
Package / Case:	Horizontal, 4 PC Pad
Height (Max):	0.093" (2.35mm)
Size / Dimension:	0.335" L x 0.220" W (8.50mm x 5.60mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-40°C ~ 125°C
Series:	CM
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	15 mOhm
Current Rating (Max):	7A
Impedance @ Frequency:	61 Ohms @ 100MHz
Number of Lines:	2
Filter Type:	Power, Signal Line
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Common Mode Chokes

Common mode chokes, also referred to as common mode inductors, are electrical components used to reduce or prevent the flow of electromagnetic interference (EMI) and associated noise in electronic circuits. The CM3322U610R-10 is a single-stage common mode choke designed for differential cable pairs and SMFAEA structures. It provides excellent common mode noise rejection in broadband operation while limiting common mode voltage.

Application Fields

Common mode chokes are usually used in differential communication technologies such as 422/485, USB, Ethernet and Firewire. They are most commonly used to reduce noise and interference in serial data transfer applications. The CM3322U610R-10 can also be used in a variety of other applications where common mode noise rejection is desired, such as switching power supply circuits, digital circuits, lighting systems, audio and video equipment, automotive systems, communication systems and microwave ovens.

Working Principle

The CM3322U610R-10 common mode choke uses a ferrite core to induce a magnetic field around the windings of the coil. The dual winding structure maximizes the inductance of the device and provides excellent common mode noise rejection. The inductance and impedance of the coil are determined by the core material, size and shape, winding number and wire size. The core material works to keep the magnetic flux confined, and is the primary factor in the successful suppression of any unwanted interference.When common mode signals are present on the line, the windings of the coil induce a current in the same direction which opposes the flow of the original signal. This opposition creates a voltage drop across the choke, reducing the amplitude of the signal and eliminating any unwanted noise or other unwanted current.

Conclusion

The CM3322U610R-10 is a single-stage common mode choke designed to reduce unwanted noise in differential communications, switching power supply circuits, digital circuits, lighting systems and more. The dual winding structure maximizes inductance, providing superior common mode noise rejection. The ferrite core keeps magnetic flux confined and works to reduce the amplitude of any unwanted interference.

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