LAL04NA221K

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Fixed inductors, such as the LAL04NA221K, are components used in a variety of applications from communications and signal processing to power management. In general, an inductor is an electrical component that stores and transmits energy by creating an electromagnetic field. Understanding the application field and working principle of the LAL04NA221K can help users select and assemble the correct component.

Applications

The applications for the LAL04NA221K include use as an overall valuable device in electronic circuits, DC to DC converters, and coupling operations and DC filters. As an overall valuable device, the inductor serves to store and deliver energy, provide circuit protection, reduce radio frequency interference, and select the frequency or range of frequency for signal transmission. Inductors are often used with DC to DC converters to step-up and shape power delivery for a voltage regulator or battery charger. The LAL04NA221K can also be used as a transformer substitute in DC coupling operations by producing a high-voltage potential with a small wattage. Additionally, inductors serve to reduce radio frequency interference utilizing inductive reactance, also known as an inductive filter, which cancels out an lower frequency signals.

Technical Specifications

The technical specifications of the LAL04NA221K have a tolerable an dcr of 0.000227 ohms with an inductance of 22uH and a current rating of 0.12A. The internal construction material is grade A, 2.3 x 1.6mm EMI SMD Coil, which stands for surface mountable coil. The operating temperature range is between -25°C and 125°C while the operating frequency range is between 0 and 10MHz.

Working Principle

The working principle of the LAL04NA221K is simple. An inductor is made up of a wire wound in a circular shape. In operation, this coil is an electric energy storage device that continuously stores and releases energy when an AC (alternating current) voltage is applied. In a fixed inductor, the current flows continuously in circles, building up an internal magnetic field. This constantly changing field induces an opposing voltage, which is what engineers refer to as back-EMF. This voltage opposes the increase or decrease of current flow within the inductor, which is called inductive reactance. This inductive reactance helps to filter out unwanted radio frequency interference.

Conclusion

The LAL04NA221K is a fixed inductor used in a variety of applications such as DC to DC converters and as a component for providing circuit protection and radio frequency interference. It has a tolerable an dcr of 0.000227 ohms with an inductance of 22uH and a current rating of 0.12A. In operation, this coil is an electric energy storage device that continuously stores and releases energy when an AC voltage is applied. The inductive reactance of an inductor helps to filter out lower frequency signals allowing the circuit to operate within the correct frequency range.

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