1140-821K-RC

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Fixed Inductors: 1140-821K-RC application field and working principle

Fix inductors, also known as coil, are electrical components that are used to store energy in the form of a magnetic field.In the design of electronic circuit, fix inductors plays an important part to prevent unwanted electromagnetic interference (EMI).They are widely used in DC-DC converter, power supply units (PSU) and consumer electronic devices as well as automobile applications.

The specific model 1140-821K-RC is a radial leaded, power-coated, high-frequency choke which is designed for noise elimination in the field of automotive electronic engineering.The 1140-821K-RC specifically consists of two windings, a ceramic core and a power coating.The windings are made of copper wire and are designed with high insulation strength to withstand high- voltages and high-temperatures.The ceramic core contains a ferrite and a powdered form which allows it to store a certain inductance value.The power coating helps to protect the components from electric and mechanical shocks.

When an alternating current passes through the two windings, it creates a magnetic field which stores the energy that passes through.The magnitude of the energy stored is determined by the inductance value of the coil.Higher inductance values create stronger magnetic fields which store more energy.The reverse is also true – lower inductance values create weaker magnetic fields and hence store less energy.The 1140-821K-RC varies in its inductance, and the specific values are specified in the product datasheet.The inductance values range from 5uH to 50uH with an initial tolerance of 5%.

In terms of uses, the 1140-821K-RC is mainly used in automotive and industrial applications for noise elimination.The advantages of their use include: a high insulation strength, a high temperature range, and a good breakdown strength.The 1140-821K-RC is an ideal choice for noise elimination because its high inductance can absorb the unwanted interference created by electrical circuits.

When using an 1140-821K-RC, it is important to adhere to its specified operating parameters, such as its temperature range and tolerances.For best results, the coil should be rated to ensure it can withstand the required voltage and current of the application.Furthermore, it is important to consider the winding resistance and the self-capacitance.The winding resistance should be low to reduce power consumption, while self-capacitance should be minimized to reduce signal losses due to capacitive coupling.

In conclusion, the 1140-821K-RC is a radial-leaded, high-frequency choke that is designed for use in automotive and industrial applications.It is classified as a fix inductive component and can be used to eliminate noise.Its main advantages include its high insulation strength, its high temperature range, its good breakdown strength, and its low winding resistance.When using this coil, it is important to adhere to its specified operating parameters for best results.

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