CMS3-14-R Filters

Voltage Rating - DC:	--
Package / Case:	Horizontal, 4 PC Pad
Height (Max):	0.236" (6.00mm)
Size / Dimension:	0.550" L x 0.550" W (13.97mm x 13.97mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-40°C ~ 160°C
Voltage Rating - AC:	--
Series:	CMS
DC Resistance (DCR) (Max):	300 mOhm (Typ)
Current Rating (Max):	750mA
Inductance @ Frequency:	1.31mH @ 100kHz
Number of Lines:	2
Filter Type:	Power Line
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Common Mode Chokes: Introduction To CMS3-14-R Application Field and Working PrincipleCommon mode chokes (CMCs) are widely used in a variety of applications such as high-frequency radio tech and power electronics. CMCs are made of inductors and require a balanced winding, with the signal carried by one winding, and the ground reference from the other. Due to their nature, CMCs are ideal in applications where the common mode interference needs to be attenuated.CMS3-14-R is one of the most common CMCs used in applications where a high level of common mode noise reduction is desired. This CMC has a wide operating frequency range of up to 10MHz, making it suitable for a variety of applications. Its through-hole construction allows it to be easily mounted into any circuit.Let\'s take a closer look at the application field and working principle of CMS3-14-R.Application Field: CMS3-14-R can be used as a differential-mode filter in systems like power electronics, USB, Ethernet, or any system that uses differential signaling. It is a useful component for controlling electromagnetic interference (EMI) in line-power and automotive interfaces. It allows for improved signal integrity and noise dampening without sacrificing signal fidelity.CMS3-14-R can also be used for EMI suppression in switching power supplies. It helps to reduce the amount of high-frequency common mode noise that is often caused by switching power supplies.In addition, CMS3-14-R can be used in a variety of high-frequency radio-frequency (RF) circuits to help control common-mode interference. It is especially useful in systems with high-power RF amplifiers and other circuits with high-level RF signals.Working Principle: CMS3-14-R utilizes a differential-mode choke design. This design helps to attenuate common-mode signals and suppress EMI. It consists of two inductor coils wound onto a ferrite core. One of the coils is connected to the input source, while the other is connected to the ground.The differential-mode windings of the CMC transmit the signal of interest, while the common-mode windings attenuate the noise. This helps to minimize interference and improve signal integrity.The CMS3-14-R also utilizes a ferrite core to help reduce signal distortion. The obstruction of a ferrite core in the signal path helps to reduce the Q value of the inductive element. A lower Q value means that the EMI generated by the CMC is suppressed.In conclusion, CMS3-14-R is a popular CMC that is used in a variety of high-frequency radio and power electronic applications. It allows engineers to experiment with and incorporate high-frequency common-mode noise reduction without compromising signal fidelity. The differential-mode windings of the CMC, combined with the ferrite core, allow it to effectively reduce EMI while supporting high-frequency signals.

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