TLF9UA802WR25K1 Filters

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Common mode chokes, also known as common mode inductors, are components that have been used to combat electromagnetic interference (EMI) from electrical signals for many decades. The TLF9UA802WR25K1 is a model of common mode choke, particularly suited to applications such as data, video, and power line applications.

Application Field

The TLF9UA802WR25K1 is a type 2 common mode choke which is particularly well suited for applications such as high-speed data, video, and power line applications. It is excellent for use in applications where a wide bandwidth of frequencies needs to be filtered. It’s also ideal for use in balancing low-level signals and controlling EMI in systems.

With the TLF9UA802WR25K1, users also gain the benefit of a low profile size, a wide enhanced temperature range up to 125°C, and low DC resistance. The choke has a rated inductance of 18uH with 3A current capability and DC resistance of 0.058Ω. The operating temperature range is 1.27mT to 20mT.

Working Principle

Common mode chokes, such as the TLF9UA802WR25K1, work by absorbing common mode interference signals which are transmitted between two circuit points in a system. The choke works by creating a magnetic field due to current passing through the core which creates a magnetic flux that links the two windings. This flux induces a voltage into the windings, which creates a counteracting magnetic field to that of the extending flux, limiting the amount of current that reaches the load.

This also means that power lines from the source to the load are shielded. When the interference is coupled into both windings in the opposite direction, the choke absorbs the interference eliminating it from the circuit. By reducing the common mode interference, the TLF9UA802WR25K1 also acts to significantly reduce noise and ensure reliable operation when data and video signals need to be transferred in high speed applications.

Conclusion

Common mode chokes, specifically the TLF9UA802WR25K1, are an essential component in electrical systems to combat electromagnetic interference (EMI). The TLF9UA802WR25K1 has a wide range of applications for data, video, and power line applications, a low profile size, a wide enhanced temperature range, and low DC resistance. Its working principle centers around creating a magnetic field and allowing interference signals to be absorbed into the windings, thus shielding power lines from the source to the load.

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