28A0392-0A2

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Ferrite cores are commonly used materials in electronics and electrical engineering applications. Made from a combination of iron oxide and Nickel, they are designed to increase the electrical and/or magnetic shielding capabilities of electronic components, cables, and wiring. The 28A0392-0A2 is a type of ferrite core, specifically designed for use in coaxial cables.

The 28A0392-0A2 ferrite core can also be referred to as a “Ferrite Bead”, due to its cylindrical shape. Its dimensions are 1.33" in height and 0.85" in outer diameter. This core is made up of two sections; a metal sleeve and an inner ferrite element. The inner ferrite element is made from a powdered iron oxide and Nickel Alloy, with an approximate composition of 80% Nickel and 20% Iron. The metal coating is typically made from either Aluminum or Zinc and acts as a protective barrier from environmental factors.

When referring to application fields, the 28A0392-0A2 ferrite core is mostly used for shielding, decoupling, and filtering applications in coaxial cables. These cables are used for transmission of various signals, from audio frequencies to microwave frequencies. Shielding of these signals is important, as electromagnetic interference (EMI) can create an unwanted cross talk between cables. Decoupling, or electrostatic discharge, is also important, as this can provide protection from static shocks which may come from external sources. In addition to this, the ferrite core is often used for filters, to eliminate unwanted noise from high frequency signals.

When it comes to working principle, the 28A0392-0A2 ferrite core works by providing high impedance at frequencies above its self-resonance. This resonance frequency is defined by the core\'s magnetostriction. That is to say, the smaller the core, the higher the self-resonant frequency. When a high frequency signal is introduced to the ferrite core, the core will create an inductance, thereby reducing the strength of the signal. This inductance creates a separation between the transmitting and receiving cable, thereby reducing EMI. It also helps to reduce cross talk by providing electrical isolation between the two cables.

At low frequencies, the ferrite core has relatively low impedance, which helps to reduce electromagnetic interference, allowing the signal to travel more freely without interference. The 28A0392-0A2 ferrite core also provides excellent high frequency suppression, which is beneficial for reducing unwanted noise. This high frequency suppression also helps to reduce voltage drops, helping to keep signal integrity intact.

In addition to the 28A0392-0A2 ferrite core\'s application fields and working principles, it is also important to be aware of the effects that it can have on signal and power integrity. As mentioned earlier, the ferrite core’s inductance causes a decrease in signal strength, so be sure to factor this into any design decisions. In terms of power integrity, the ferrite core’s high voltage rating can cause a decrease in voltage, further impacting signal and power integrity.

Overall, the 28A0392-0A2 ferrite core is a versatile material for use in cable and wiring applications. Its shielding capabilities make it ideal for reducing interference and cross talk between cables, its decoupling capabilities make it ideal for isolating static charges, and its ability to filter high frequency noise makes it ideal for keeping signals clean and clear. Its wide range of applications makes it a valuable material for many types of electronic and electrical engineering projects.

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