SDR1105-820KL

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Fixed inductors, such as the SDR1105-820KL, are used for a variety of applications ranging from power supplies to communications. These devices, primarily made up of a metal core and wire, are designed to reduce electrical interference, store energy, and provide filtering. The SDR1105-820KL from NTE Electronics, for example, is well-suited for applications requiring high current flow, low DC resistance, and good frequency characteristics. Understanding its application fields and working principle can help engineers make the most of this component.

Application Fields

The SDR1105-820KL is a high-power fixed power inductor. Its maximum DC current rating is 33A, making it a great choice for power supplies that require high current. Its inductance of 820µH allows the device to provide much better filtering than a resistor, and helps reduce unwanted radio frequency interference (RFI). The device also works well as an EMI suppression filter for applications such as motors, lights, and lightning fixtures. The SDR1105-820KL resists corrosion and is capable of withstanding up to +125°C, so it is ideal for high-temperature applications.

Working Principle

Inductors, which are also known as chokes, are made of a wire that is wound around a core of some kind. The core serves to increase the inductance of the device, which is used to reduce the flow of AC current and store energy. In an inductor, current passes through the wire in one direction or the other, depending on the direction of the voltage across the device. This flow of current induces a magnetic field, which is then used to resist changes in current. This phenomenon is known as inductance.

In the case of the SDR1105-820KL, the inductor is wound on a metal core, which increases the device’s inductance and allows it to store more energy. This capability makes the device useful as a filter and a source of energy to be used in various applications, such as power supplies. The higher inductance also allows the device to provide better filtering of RFI than a resistor would, making it ideal for applications that require clean power.

Conclusion

The SDR1105-820KL from NTE Electronics is a robust and efficient high-power fixed inductor. Its high current rating, low DC resistance, and good frequency characteristics make it a great choice for applications such as power supplies, RFI suppression, and general filtering. Understanding its application fields and working principle can help engineers make the most of this component.

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