4922R-29J

Fixed inductors, also known in the industry as chokes, are modern electronic devices designed to store electrical energy over a certain period of time. Their purpose is to help regulate the current, often in alternating current (AC) or direct current (DC), where traditional resistors are unsuitable. Inductors are widely used in electric and electronic systems ranging from cell phone chargers to high frequency power supplies, from radio antennas to embedded systems.

The 4922R-29J is an axial-lead, surface-mount fixed inductor from KRL Industries. Its main specifications are an inductance of 2.2μH, a current rating of 0.7A, a self-resonant frequency of 25MHz, and a nominal DCR of 0.075Ω.

The 4922R-29J is suitable for use in a variety of different applications, such as signal conditioning, switch-mode power supplies, voltage regulation, and base station control systems. Its high self-resonant frequency makes it ideal for high frequency systems, allowing signals of different frequencies to be properly filtered and regulated without suffering from significant signal losses.

The working principle of the 4922R-29J is based on the inductance properties of its windings. When an AC current is applied to the winding, an increasing amount of energy is stored in the inductor with each passing period. The stored energy then acts as a dampening effect against any changes in applied voltage or current. This helps keep the signal relatively constant and free from undesired oscillations.

Additionally, the inductor helps to regulate the AC current by providing a time-dependent resistance. As the applied current increases, the effective resistance also increases. This helps smooth out the current flow, limiting the peak value and reducing undesirable overshoot. The inductor has the advantage of being able to provide this effect while eliminating the large power losses associated with resistors.

Overall, the 4922R-29J is a high-quality inductor that is suitable for use in a wide variety of different applications. Its high self-resonant frequency and effective current control capability make it ideal for use in high frequency systems, as well as voltage regulation and switch-mode power supplies.