Voltage Rating - AC:	250V
Package / Case:	Vertical, 4 PC Pin
Height (Max):	1.075" (27.31mm)
Size / Dimension:	1.050" L x 1.050" W (26.67mm x 26.67mm)
Mounting Type:	Through Hole
Features:	ESD
Approvals:	--
Ratings:	--
Operating Temperature:	--
Series:	CME
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	202 mOhm
Current Rating (Max):	1.28A
Inductance @ Frequency:	6mH @ 10kHz
Number of Lines:	2
Filter Type:	Power Line
Part Status:	Active
Packaging:	Bulk

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Common Mode Chokes

Common mode chokes are a class of devices used to suppress excessive common-mode currents. The chokes typically consist of a ferromagnetic core with two windings of wire, magnetically coupled to each other. The two windings are connected in such a way that a common-mode voltage developed across one winding results in a current on the other winding which tends to oppose the current on the former winding. This opposition causes a cancellation of the common mode voltage and thus a reduction of the common-mode current. The CME2425-4-B is a type of common mode choke specifically designed for audio applications. This choke is capable of handling large peak currents and provides excellent impedance characteristics at frequencies up to 100kHz. The CME2425-4-B features a d-shaped ferrite core with two windings. The two windings have a combined inductance of 250uH and a saturation current of 20A.The CME2425-4-B is used in a variety of audio applications, such as powering bass speakers, providing low distortion sound reproduction and reducing hum and noise in audio systems. Typically, the choke is connected between the power amplifier output and the loudspeaker. This connection is necessary to suppress any common-mode currents that would otherwise flow through the loudspeaker, causing distortion and noise. The CME2425-4-B is an effective solution for this problem as it provides an excellent low-frequency response, allowing the device to effectively suppress any noise or hum present on the power amplifier output.In addition, the CME2425-4-B can also be used in low power DC-DC converters to suppress any noise coupled into the power line. As the device exhibits low impedance at high frequencies, it is capable of suppressing any high-frequency noise coupling into the power line. Furthermore, the high saturation current rating of the CME2425-4-B makes it suitable for applications with large peak currents, such as battery chargers and motor controllers.Finally, the CME2425-4-B can be used to isolate two circuits, such as, for example, the power supply and the speaker. This is achieved by connecting the input of the choke to the power supply and the output to the loudspeaker. As the two circuits are not electrically connected, any current flowing in one winding of the choke will not flow in the other winding, thus creating a voltage difference and thus an isolation of the two circuits.In conclusion, the CME2425-4-B is a type of common mode choke designed for audio applications. It features a d-shaped ferrite core, two windings and a high saturation current rating. The choke can be used to suppress noise, hum and common-mode currents in audio systems, and also to isolate two circuits.

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