CM6149R-684

Voltage Rating - AC:	--
Package / Case:	Horizontal, 4 PC Pad
Height (Max):	0.210" (5.33mm)
Size / Dimension:	0.285" L x 0.285" W (7.24mm x 7.24mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-55°C ~ 105°C
Series:	CM6149R
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	170 mOhm
Current Rating (Max):	500mA
Inductance @ Frequency:	680µH @ 10kHz
Number of Lines:	2
Filter Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Common Mode Chokes

Common Mode Chokes (CMCs) are inductive elements used to selectively reduce or prevent the transfer of common-mode signals from one circuit to another without impairing the signal intended to be delivered. CMCs are widely used in the design of high-frequency electronic power supplies, radio frequency applications, and automotive applications.The CM6149R-684 CMC is a specialized type of inductor designed to provide high-frequency pass-through capabilities while at the same time blocking or suppressing unwanted signals. It is a ferrite bead style inductor with an inductance of 1.68 uH over a wide range of DC current. It is most commonly used in power applications such as in DC-DC converter or AC-DC converter designs.The working principle behind CMCs is based on the fact that they provide a low-impedance path to current flow while isolating DC leakage and blocking outside frequencies along the way. This is done by transitioning high-frequency signals into low-impedance currents through the inductor while blocking DC offsets and preventing harmful interference from entering the circuit. The frequency response of the CM6149R-684 CMC is optimized to eliminate the displacement current and provide effective filtering from 50 kHz to 200 kHz.CMCs are commonly used in DC-DC converter designs for filtering and/or limiting both output voltages and load currents. In AC-DC converter designs, CMCs can also be used to limit power surges and reduce dynamic current ripples in the output voltage waveforms. In addition to these filtering applications, CMCs can be used to protect other components by limiting current flow when excessive voltage or current levels are detected.CMCs are also popular in the radio frequency industry. Radio frequency interference (RFI) can cause serious issues in electrical and mechanical systems. CMCs help reduce the impact of RFI by suppressing signals from radio frequency sources, thus improving system performance and reliability. CMCs can also provide protection by limiting current and reducing interference at frequencies above 200 kHz.CMCs are also widely used in automotive applications. They are used to reduce undesired or hazardous signals across a wide range of operating frequencies. CMCs are used to filter radio frequency signals such as digital cellular and Bluetooth signals, over-the-air television signals, radio frequencies from satellites, and signals sent from and received by vehicles. CMCs also provide filtering and EMI protection for ignition and fuel system components in modern engines, helping to improve vehicle performance and reliability.CMCs offer a variety of advantages for various types of applications. They help reduce the risk of interference or damage caused by excessive current, provide filtering of high-frequency noise from power supplies, and enable suppression of rfi from external sources. With their high-frequency transmission characteristics, CMCs are an effective and efficient solution for protecting electronic components and circuits from outside sources of interference.

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