FB20011-3B-RC

Voltage Rating - DC:	--
Package / Case:	Axial - 4 Leads
Height (Max):	--
Size / Dimension:	0.236" Dia x 0.394" L (5.99mm x 10.01mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	--
Voltage Rating - AC:	--
Series:	FB2000
DC Resistance (DCR) (Max):	--
Current Rating (Max):	--
Impedance @ Frequency:	430 Ohms @ 100MHz
Number of Lines:	2
Filter Type:	--
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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FB20011-3B-RC words for Ferrite Bead 20011-3B-RC. It is a common mode choke feature a low dc resistance and high inductance, which used in the electronics and telecommunication industry. In this article, we will overview the common mode chokes, its application field and how it works. What is Common Mode Chokes Common mode chokes are components consisting one or more coils and ferrite beads or other materials. The purpose of common mode chokes is to reduce common-mode current in the electronic system, which is a parasitic current that may contain noise or interference. Common mode chokes are also used to block small section of high frequency signal between two parts of the circuit. Application Field Common mode chokes have a variety of applications, including: • Power Supplies: Common-mode chokes are commonly used in electronic power supplies. They are used to reduce noise in some high frequency applications, as they are able to effectively attenuate the common-mode current on the power input line. • Electronics & Telecommunication Industry: Common mode chokes are used to reduce noise in electronic and telecommunication systems, such as local area networks (LAN/Ethernet), server farms, fiber optic systems, audio systems, and wireless communication systems. • Automotive: In new development of automotive electronics, such as vehicle data acquisition systems, navigation systems, and electric powertrain control systems, common mode chokes are used to reduce emissions from the vehicular wiring. • Home Appliances: In the home appliances industry, such as kitchen appliances, air conditioners, and refrigerators, common mode chokes are used for noise suppression. Working Principle In order to better understand the working principle of common-mode chokes, it is essential to understand the concepts of "common mode" and "differential mode" currents.The differential mode current is a direct current flowing through two signals. It is the "original" signal flowing in the intended direction, and it knows no interference. On the other hand, the common mode current is a form of interference. It is the background noise of the system, an unwanted current that is coupled with the differential signal.The most common way common mode chokes reduce common mode currents is by implementing a "common mode choke coil". This is a device consisting of two or more connected coils. This device creates a low impedance path for high-frequency differential mode currents, while making a high impedance path for low-frequency common mode currents. In other words, the current produced by the choke coil will be out of phase with the current coupled with the differential. This causes the two currents to oppose each other and reduce the overall common mode current in the system. Conclusion Common mode chokes are components used to reduce unwanted common-mode current in electronic and telecommunication systems, power supplies, and automotive applications. Common mode chokes are typically composed of ferrite beads or other materials, and they are used to attenuate high frequency signals as well as reduce the common mode current of the system. The most common way of reducing common mode currents is through the usage of the “common mode choke coil,” which creates a low impedance path for the differential signals, while making a high impedance path for the common mode current.

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