4922-02J

Fixed Inductors

Fixed inductors are an essential component in the electronics industry. Many applications, such as filtering and smoothing, require a specific inductance that is often found in a variety of different sizes and configurations. Among the wide range of inductors available is the 4922-02J. This product offers an efficient, durable design for various applications, but understanding its application field and working principle is essential for selecting the right part for the job.

Application Field

The 4922-02J is an exemplary choke coil from FCI/Nippon Chemi-Con. With a soldering rating of 250V or 50Vrms, its intended application is in consumer electronics. It is used for power supply and overall EMI/RFI noise reduction in hub devices, such as LAN hubs, DSL modems, and satellite receiving equipment. It can be found in AC adapters, portable DVD players, and Network Interface Cards (NICs). To maximize its effectiveness, the choke coil must be connected in series with the power supply line.

Working Principle

The 4922-02J is an inductor made of two different wire connectors and one copper tube. It works by creating an electrical current through the copper tube, which then generates a magnetic field. This magnetic field acts as an opposing force, or inductance, to any current running through the copper tube, thus smoothing the supply line and reducing EMI/RFI noise. Note, that this choke coil is limited to DC systems, as it cannot provide any inductance on an AC signal.

Conclusion

The 4922-02J choke coil is an efficient component in many consumer electronics applications. Its durable design and ability to reduce EMI/RFI noise specifically make it an ideal choice for noise reduction in hub devices. A better understanding of its application field and working principle is essential in order to maximize its effectiveness.