SRU1028-221Y

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Fixed inductors store energy in the form of a magnetic field that is generated in the inductor’s coil when it is provided with an electric current. The SRU1028-221Y is a surface mount fixed inductor in HG series with a rated current of 2.1A and an inductance of 0.22uh. It is typically used in applications requiring higher rated current and is mainly used in electronic circuits, especially in battery chargers, DC/DC converters, and in low-frequency circuits. It is also used as a filter component in audio systems.

With the SRU1028-221Y, its external body is designed with good mechanical properties, the surface mount device is made of a metal alloy and its coils are made of a copper material. This is because the inductor is often connected to other circuit components, so its body requires reliable mechanical properties to ensure reliable working performance. Additionally, this type of inductor also features a high-temperature proof for up to 125℃, making it suitable for use in high-temperature environments. Furthermore, its leads are spot welded to ensure durability and consistent performance, and its rated current can be achieved with an inductance change of ±10%.

The working principle of the SRU1028-221Y is based on Faraday’s law of electromagnetic induction. When a current-carrying conductor is exposed to a magnetic field, it induces an electromotive force (EMF) on the conductor. This is the principle behind the Li-Ion battery charger used in many electronic devices. The inductance of the SRU1028-221Y is the measure of how much more current is required to establish a magnetic field in the inductor. The more current supplied to the inductor, the more induced EMF is generated, which ultimately aids in storing energy in the form of a magnetic field.

A typical application of the SRU1028-221Y can be seen in the design of a voltage regulator, which requires an inductor to convert an AC input voltage into a DC output voltage. The SRU1028-221Y can be used to create the inductor in the voltage regulator circuit. The inductor works by allowing the current from the input voltage to be stored in its magnetic field, reducing the magnitude of the voltage in the circuit. This is the working principle of the inductor and is essential for the voltage regulator circuit to function properly.

In addition, inductors are also frequently used to filter LC circuits for audio systems. The SRU1028-221Y can also be used in this application, as it has a high-temperature proof for up to 125℃ and its spot-welded leads ensure durability and consistent performance. In a typical LC filter circuit, the inductor and capacitor work together to remove unwanted frequencies from an audio signal and significantly reduce noise.

In conclusion, the SRU1028-221Y is a fixed inductor with a rated current of 2.1A and an inductance of 0.22uh, which is mainly used in battery chargers, DC/DC converters, and audio systems. Its coil is typically made of copper material and its body consists of metal-alloy to enable reliable working performance. The working principle of the SRU1028-221Y is based on Faraday’s law of electromagnetic induction and its rated current can be achieved with an inductance change of ±10%. Its spot-welded leads and high-temperature proof enables it to be used in a variety of applications.

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