4211R-14

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Ferrite beads and chips are an important part of power line filtering in power supply applications. The 4211R-14 from Laird Technologies is a popular ferrite bead intended for use in medium-power applications.Ferrite beads are also commonly used in small signal and RF circuits.

Typically characterized by a high impedance at frequencies below the self-resonant frequency, ferrite beads are used to suppress incoming noise and interference coming into a circuit. These noise currents flow through the bead’s impedance, reducing the available signal appearing at a device’s input. Ferrite beads are also often used on the circuit boards of electronic devices to reduce electromagnetic radiation.

The 4211R-14 ferrite bead seeks to offer effective, medium-power operation in a compact package, allowing power supplies to operate at their full potential. This ferrite bead measures 12.6mm x 7.9mm x 4.8mm, making it well-suited for designs requiring space savings. It is able to dissipate up to 10 watts of average power across a frequency range from 0-700 MHz, making it suitable for medium-power applications. It also offers an impedance of approximately 31 ohms at 1 MHz, making it suitable for use in a variety of applications.

The 4211R-14 ferrite bead works through the application of hysteresis. As current passes through the bead, the inductance of the structure responds by creating a magnetic field. This magnetic field interacts with the material of the bead, developing hysteresis that can be used to reject high-frequency noise.

In addition, the arrangement of the beads also maximizes the inductive effect. Instead of restricting the flow of current to just the surface of the bead, the 4211R-14 ferrite bead can also move it through its core. This helps increase its total inductance and maximizes its filtering and noise rejection functions.

The 4211R-14 ferrite bead is designed to work in Medium (250mA – 10A) and Low (1A – 5A) power applications. It can be used to filter equipments with high-power switching supplies, electronic motor control drives, power supply and consumer electronic applications. The bead also shows a low power insertion loss characteristics across the entire frequency range of 0-700 MHz, allowing an enhanced signal fidelity with lower power consumption.

Finally, the 4211R-14 ferrite bead is RoHS compliant and UL listed, making it the ideal choice for applications that demand quality. In addition, the bead is available in a wide range of sizes and shapes, making it versatile enough for a variety of applications. This makes the 4211R-14 the perfect ferrite bead for applications in medium power applications.

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