CM01U161T Filters

Voltage Rating - AC:	--
Package / Case:	Horizontal, 4 PC Pad
Height (Max):	0.035" (0.90mm)
Size / Dimension:	0.047" L x 0.039" W (1.20mm x 1.00mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-40°C ~ 125°C
Series:	CM01
Voltage Rating - DC:	20V
DC Resistance (DCR) (Max):	600 mOhm
Current Rating (Max):	260mA
Impedance @ Frequency:	160 Ohms @ 100MHz
Number of Lines:	2
Filter Type:	Signal Line
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to Common Mode Chokes

Common mode chokes, otherwise known as CMCs, are one of the most important components in a power electronics system. CMCs are designed to reduce EMI emissions, reduce conducted noise, and provide an ideal line impedance. Common mode chokes can be found in many varieties of power electronic systems, from simple consumer devices such as AC adaptors and computer peripheral connectors, to industrial systems such as power supplies and UPS systems.

CM01U161T Application Field and Working Principle

The CM01U161T is a type of common mode choke designed for use in applications where high levels of noise are present. This type of common mode choke is most commonly used in high-end automotive systems, and other electronic systems that contain high-speed data signals.The CM01U161T operates on a principle of magnetic coupling between the inbound and outbound signals. This means that electromagnetic fields generated by the inbound signal are able to penetrate the core of the choke, and be absorbed by the two coils located inside of it. As the electromagnetic fields pass through the common mode choke, the high-frequency noise present in the inbound signal is cancelled out.The CM01U161T also functions as a low pass filter, reducing the amount of high-frequency noise present. This means that the noise is not passed along the line, and high-speed signals will not be affected.

Advantages and Disadvantages of CM01U161T

Like all common mode chokes, the CM01U161T is a reliable and effective technique for reducing conducted noise. The advantages of the CM01U161T include its relatively small size, making it easy to integrate into any system. The size of the CM01U161T also helps to reduce overall costs, as it does not require a large footprint on a PCB.The disadvantages of the CM01U161T, however, include its relatively high insertion loss and limited frequency range. The CM01U161T is designed for use in high-speed automotive systems, and therefore its frequency range is limited to frequencies between 1MHz and 10MHz. Additionally, the CM01U161T can suffer from high insertion loss when used with high-speed data signals, as the signal can become distorted by the noise cancellation process.

Conclusion

The CM01U161T is an effective and reliable common mode choke which is designed for use in applications requiring high-speed data signals. It operates by coupling the inbound and outbound signals in a magnetic field, effectively cancelling out any high-frequency noise present. The CM01U161T is small in size, making it easy to integrate into any system, and its relatively low cost makes it a popular choice for use in automotive systems and other power electronic systems. The main drawbacks of the CM01U161T are its limited frequency range and high insertion losses, which can limit its effectiveness in some applications.

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