4211R-7

Series:	4211R
Packaging:	Tape & Reel (TR)
Part Status:	Active
Filter Type:	--
Number of Lines:	1
Impedance @ Frequency:	216 Ohms @ 100MHz
Current Rating (Max):	--
DC Resistance (DCR) (Max):	--
Ratings:	--
Operating Temperature:	--
Package / Case:	Axial
Mounting Type:	Through Hole
Height (Max):	--
Size / Dimension:	0.138" Dia x 0.450" L (3.51mm x 11.43mm)

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Ferrite Beads and Chips: 4211R-7 Application Field and Working Principle

Ferrite beads and chips are frequently used in electronic devices to filter out noise under certain circumstances. In this paper, we will focus on the application field and working principle of 4211R-7 ferrite beads and chips.4211R-7 ferrite beads and chips are primarily applied in cell phones. When a cell phone is in use, the onboard circuit is constantly subjected to line noise from power sources, electromagnetic wave interference from other sources, high-frequency transmission between the modem and mobile base station, and more. If not adequately filtered, these often interfere with the signal or system stability, causing a degraded signal quality that could lead to poor connections or even system crash. The 4211R-7 ferrite beads and chips are very useful in filtering out these noises, meaning they suppress the noise interference from the outside and allow a smoother operation. The 4211R-7 type has good characteristics in the high frequency band of 0.5 to 20 MHZ and its choke loss is significantly reduced when it works in the frequency range around 1 to 5MHz, and the temperature coefficient of the impedance is small.The working principle of the 4211R-7 ferrite beads and chips is based on the concept of eddy currents. Eddy currents are electric currents induced in conductors whenever a magnetic field is applied in the presence of electromagnetic wave interference. The 4211R-7 ferrite beads and chips use this principle by allowing the electromagnetic wave interference to pass through the coils in a particular frequency range, inducing eddy currents in the conductors. The current is then dissipated in the form of heat due to the resistance of the ferrite beads, which in turn helps to filter out higher frequency noise.To sum up, the 4211R-7 ferrite beads and chips are applied in low and high-power cell phones. Their working principle is mainly based on the concept of eddy currents induced in conductors whenever a magnetic field is applied in the presence of high frequency wave interference, which helps filter out this noise.

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