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Fixed Inductors

SPD42R-823M fixed inductorsare passive components that help protect, filter, and limit current. They are typically used for noise reduction, providing power efficiency, and protection for the device from high voltage surges. The SPD42R-823M is a high efficiency solution for reducing EMI (electromagnetic interference) from low frequency noise.

Application Field

The SPD42R-823M fixed inductors can be used in general-purpose DC/DC converters, personal computers, notebook PCs, cellphones and other electronic equipment including consumer and mobile products. It is often used in devices requiring a stable voltage level due to its ability to help filter out high voltage spikes. Also it can used in military aerospace, navigation and communication field, due to its high reliability in the most extreme conditions.

Working Principle

The SPD42R-823M fixed inductors operate by restricting the current flow through it while allowing for a relatively steady voltage level. The inductance of the inductor is proportional to the number of turns in its coil and the size of the core. When a current is applied to the level, a magnetic field is generated around the coil. This field then generates an opposing current or “back EMF” which helps limit the current flow. The better the quality of the magnetic core material, the better the inductor will perform.

Whenever a voltage is applied to the coil, the current will flow in one direction until it reaches a certain peak value and then abruptly begins to decrease. This “peak” is known as the inductor’s “saturation” point.Once the current has peaked, the inductor will begin to drain the current in the opposite direction. This process continues until the current reaches the original point where it started. This back and forth motion will help protect the circuit by creating a steady voltage level.

The inductance of the fixed inductor...will determine the rate at which the voltage levels remain steady. The lower the inductance, the faster the voltage level will fluctuate whereas the higher the inductance, the slower the voltage level will fluctuate. The SPD42R-823M fixed inductor has a maximum inductance of 113μH.

Conclusion

The SPD42R-823M fixed inductors can be used for noise reduction, providing power efficiency, and protection for the device from high voltage surges. It has a maximum inductance of 113μH, which helps provide a steady voltage level. The inductor has a wide range of applicationsdue its high reliability and performance in extreme conditions.

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