ACM-21-161M-T

Voltage Rating - AC:	--
Package / Case:	Horizontal, 4 PC Pad
Height (Max):	0.055" (1.40mm)
Size / Dimension:	0.079" L x 0.047" W (2.00mm x 1.20mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Series:	ACM-21
Voltage Rating - DC:	50V
DC Resistance (DCR) (Max):	350 mOhm
Current Rating (Max):	330mA
Impedance @ Frequency:	160 Ohms @ 100MHz
Number of Lines:	2
Filter Type:	Signal Line
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ACM-21-161M-T Application Field and Working Principle

Common Mode Chokes are a type of inductor that are used to suppress unwanted signals that can interfere with the operation of data, power, and signal lines. These chokes help to reduce the amount of current that is transmitted along these lines and to reduce the level of power and signal noise generated by the transmission. The ACM-21-161M-T is one of the most widely used of these common mode chokes, and is often used for signal integrity and EMI/EMC mitigation.

Overview of ACM-21-161M-T

The ACM-21-161M-T is a common mode choke designed for use in data, power and signal lines. It is made up of two balanced windings that are wound around a ferrite core, which helps to absorb unwanted common mode noise. The choke has common mode characteristics that offer a high level of RF attenuation of up to 100dB at high frequencies. This helps to reduce the level of common mode noise that can interfere with the operation of data, power and signal lines.

Application Fields of ACM-21-161M-T

The ACM-21-161M-T common mode chokes are widely used in a number of different applications. These include EMI/EMC mitigation, such as on PCBs, power boards and signal cables. They can also be used for signal integrity mitigation, such as on I/O cables, Ethernet cables, and USB cables. They are also commonly used in LED lighting applications, where they help to reduce the level of noise generated by dimmers and other power sources.

Working Principle of ACM-21-161M-T

The ACM-21-161M-T common mode choke works by providing high levels of RF attenuation. This reduces the level of noise and interference that can be generated by data, power and signal lines. The choke is designed to absorb noise from both directions, so that it can effectively block unwanted noise created by nearby electrical components. The device works by creating a magnetic field around itself which helps to absorb and attenuate the common mode noise. This is done by having two windings, each wound around a ferrite core. The core is designed to absorb the energy of the common mode signals, while the windings help to propagate this energy throughout the core. The resulting magnetic field acts to absorb the common mode noise and reduce it to acceptable levels.

Conclusion

The ACM-21-161M-T common mode choke is a widely used device for EMI/EMC and signal integrity mitigation, as well as LED lighting applications. The device works by creating a magnetic field around itself which helps to absorb and attenuate the common mode noise generated by data, power, and signal lines. It has a high level of RF attenuation of up to 100dB at high frequencies which helps to reduce the amount of interference that can be transmitted on these lines. Overall, the ACM-21-161M-T is a reliable and effective device for reducing unwanted noise.

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