7408-RC

Voltage Rating - AC:	250V
Package / Case:	Vertical, 4 PC Pin
Height (Max):	0.827" (21.00mm)
Size / Dimension:	0.748" L x 0.669" W (19.00mm x 17.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-55°C ~ 105°C
Series:	7400
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	280 mOhm
Current Rating (Max):	1.1A
Inductance @ Frequency:	5mH @ 1kHz
Number of Lines:	2
Filter Type:	Power Line
Part Status:	Active
Packaging:	Bulk

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Common Mode Chokes

Common Mode Chokes (CMCs) are inductors with three or more windings wound around a single core and are used for a variety of applications. They are often found in power electronic converters, radio frequency (RF) circuits, power supplies, and motors. CMCs are used to reduce the common-mode impedance of a line, reduce noise, and suppress EMI. CMCs are also used to reduce the transfer impedance of circuits, leading to improved signal integrity.The most common type of CMC is the 7408-RC, a three-winding CMC consisting of an internal resistor, an internal capacitor, and an external winding. The 7408-RC has a much higher common-mode impedance compared to other CMC types and can handle much higher power levels. The 7408-RC also has a very low transfer impedance, which allows it to reduce noise and suppress EMI more effectively.The 7408-RC application field and working principle are very simple. The 7408-RC is used to reduce noise and suppress EMI in a circuit by limiting the transfer impedance between the inputs and outputs. When a signal is transmitted through the 7408-RC, it passes through the internal resistor and the internal capacitor. This creates a high impedance across the line, reducing the transfer impedance between the inputs and outputs. The external windings act as an inductor, increasing the common-mode impedance of the line and further reducing the transfer impedance.The 7408-RC is also very effective at reducing power supply noise. The internal resistor acts as a dampener, reducing power supply ripple and improving power supply regulation. The internal capacitor also helps to reduce power supply noise. By increasing the common-mode impedance of the line, the 7408-RC can reduce power supply noise by up to 50%.The 7408-RC is an effective and reliable device for reducing noise and EMI. It is especially useful for applications such as power electronics and radio frequency circuits. The 7408-RC application field and working principle make it an effective tool for noise and EMI reduction.

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