TLF14CB4721R0K1

Voltage Rating - AC:	250V
Package / Case:	Vertical, 4 PC Pin
Height (Max):	0.906" (23.00mm)
Size / Dimension:	0.866" L x 0.669" W (22.00mm x 17.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-25°C ~ 105°C
Series:	TLF14
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	380 mOhm
Current Rating (Max):	1A
Inductance @ Frequency:	4.7mH @ 1kHz
Number of Lines:	2
Filter Type:	Power Line
Part Status:	Obsolete
Packaging:	Bulk

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Common Mode Chokes

Common Mode Chokes (CMCs) are passive electrical components, made of coils of conductors surrounded by a permeable ferrous core, and are typically used to filter out unwanted signals or noise. The TLF14CB4721R0K1 CMC in particular has applications in high speed differential transmissions, power supplies, servo motors, and rotating machinery. Its particular design allows it to attenuate a wide frequency range of common mode noise, making it effective in all sorts of applications.

What are Common Mode Chokes?

Common Mode Chokes, are types of inductors, specifically designed to suppress the electromagnetic interference (EMI) emitted by electronic circuits. A CMC is typically composed of several turns of wire wrapped around a ferromagnetic core. The windings are generally made from some type of copper wire, typically of very high gauge, and the core can be made of a variety of materials, such as ferrite, iron, and air.The winding configuration of CMCs can vary greatly depending on the type of noise they are designed to attenuate. Different types of CMCs may have the same number of turns, but they can use a different winding configuration to achieve a different frequency response. CMCs are designed to be both mechanically and electrically robust, and they have the ability to attenuate a wide range of frequencies.

TLF14CB4721R0K1 Application Field and Working Principle

The TLF14CB4721R0K1 CMC is specifically designed for differential transmission applications, power supplies, and rotating machinery up to a specified frequency range. It is composed of ten turns of 15.6 AWG copper wire wound around a ferrite core. Its winding configuration allows it to be used in a wide range of applications including power supplies, motor controllers, pulse generators, and data busses.The TLF14CB4721R0K1’s working principle is based on the reaction between the magnetic fields created by current flowing through the winding, and the ferromagnetic core. This reaction creates a "Faraday cage" in which any noise or interfering signals are blocked from entering the circuit. The shape and size of the core has a large effect on the CMC’s ability to block noise; increasing its size increases its noise blocking properties. The TLF14CB4721R0K1 CMCs have a very wide operating frequency range, ranging from 0 to 120MHz, making them effective in a variety of applications. Furthermore, they are very low profile, measuring in at only 0.2” in height, and they have a very low leakage current, meaning they can be used for high-speed applications without causing any additional interference.

Advantages of Common Mode Chokes

CMCs have many advantages over other filtering methods, such as capacitors and ferrite beads. First, they are extremely effective at attenuating a wide range of frequencies. Second, they have extremely low leakage current, meaning they require very little power to be effective. Third, they are very reliable components that are designed to last for a long time. Fourth, they come in a variety of shapes and sizes, and can be used for a variety of applications. Finally, and probably most importantly, they are very cost effective.

Conclusion

Common Mode Chokes, such as the TLF14CB4721R0K1, are extremely useful components for many applications, and are used to filter out unwanted noise or signals from electronic circuits. They are designed to be both mechanically and electrically robust, and offer a wide operating frequency range and low profile for their size. Furthermore, CMCs offer many advantages over other filtering methods, and are very cost effective.

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