28L0138-40R-10

Ferrite beads and chips are widely used for electromagnetic interference (EMI) suppression in electronic circuits. The 28L0138-40R-10 is a type of ferrite bead that is used for EMI filtering and noise shielding. This article will discuss the application field and working principle of a 28L0138-40R-10 ferrite bead.

Application Field

The 28L0138-40R-10 ferrite bead is commonly used in applications that require moderate to high frequency EMI filtering and noise shielding. These applications include industrial automation, medical and telecom device development, automotive, home automation, and computer networks. The 28L0138-40R-10 is not limited to these applications, but these are the most popular for using this type of ferrite bead.

Advantages

The 28L0138-40R-10 ferrite bead has a number of advantages over other EMI filtering solutions. It is small in size and will not take up much space on the board. The bead has a high frequency response, meaning it can effectively filter out a wide range of frequencies. It also has a relatively low insertion loss, meaning it will not significantly affect the signal quality of the circuit. The 28L0138-40R-10 is also rated for high temperatures, making it suitable for use in temperature-sensitive applications.

Working Principle

The 28L0138-40R-10 ferrite bead works by inductively dissipating EMI signals. It consists of a coil of magnetic wire wrapped around a ceramic core. The core has a specific permeability which affects how much of the signal it absorbs. When an EMI signal passes through the coil, it creates an electro-magnetic field which induces a current in the coil. This current then interacts with the magnetic field of the core and is dissipated as heat energy. The coil effectively filters out much of the EMI signals, preventing them from causing interference in the circuit.

Conclusion

The 28L0138-40R-10 ferrite bead is a popular EMI filtering solution for a wide range of applications. It is small in size and has a high frequency response and a low insertion loss. The 28L0138-40R-10 works by inductively dissipating EMI signals through a coil of magnetic wire wrapped around a ceramic core. This makes it an effective solution for protecting against EMI interference in electronic circuits.