RL875-181K-RC

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Inductors are classified as electrical components which convert electrical energy into magnetic energy. Fixed inductors, like the RL875-181K-RC, are a type of inductor which store energy in a magnetic field, which can be used to reduce ripple in a circuit, or for providing a particular level of inductance (or opposition to a current). Typically, fixed inductors have a ferrite core within which are copper or aluminium windings which store the generated magnetic field.

The RL875-181K-RC is a fixed inductor with an inductance rating of 180μH ± 20% at zero DC current. This type of inductor is suitable for controlling high frequency current, with its frequency range between 130 to 500Mhz. The great advantage of this inductor, in comparison to other inductors on the market, is its significantly lower parasitic resistance. As such, this inductor allows for efficient current flow, making it suitable for RF applications such as GPS, WLAN, handheld radio, and Bluetooth communication.

The RL875-181K-RC also has high temperature stability, with a tolerance of +/-20℃. Additionally, the inductor has an excellent solderability, with IR criteria of 250-260℃ peak. This makes it suitable for surface mount applications in a wide range of environments. Furthermore, with a resistance of 11.7Ω, and a rated current of 600mA, it provides high efficiency, with reduced internal heating under high frequency current.

As its name suggests, a fixed inductor is characterised by its stationary inductance rating, meaning the value of the inductance does not change significantly with current or frequency. This is usually achieved with air gap inductor types, which use an iron core and air gap filled with iron oxide, or a ferrite core. The RL875-181K-RC uses a ferrite core, supporting high reliability and uniformity under high frequency applications.

The working principle of a fixed inductor like the RL875-181K-RC revolves around a magnetic field. When the ferrite core material is surrounded by a copper or aluminium winding, a magnetic field is created. When a current is then passed through the winding, the current and magnetic field interact, leading to a build up of charge around the windings. This interaction causes reluctance, meaning the current is temporarily reduced, with the built up charge storing energy until it is released.

This stored energy can then be used to reduce noise and ripple in a circuit, allowing for cleaner and efficient current flow. This makes the inductor ideal for use in radio frequency applications, where efficient and clean current is necessary. Additionally, the RL875-181K-RC’s ferrite core allows for reduced frequency at high current, meaning the inductor can function even when its current is increased.

In conclusion, the RL875-181K-RC is an excellent example of a fixed inductor, combining low parasitic resistance and excellent solderability to provide efficient current flow for RF applications such as GPS, WLAN, handheld radio and Bluetooth communication. With its frequency range of 130-500Mhz, and its temperature stability tolerance of +/-20℃, this inductor is suitable for an array of applications, thanks to its reliability and efficient current flow.

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