SRU1028A-3R3Y Inductors, Coils, Chokes

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Fixed inductors are devices that are used to provide a controlled amount of inductance in a circuit. The inductance of a circuit is the opposition to the changing electric current, which is measured in units of henries. The SRU1028A-3R3Y, an inductor developed by Bourns Inc., is a surface mount inductor designed for high-efficiency, low-noise power supplies and other applications.

The SRU1028A-3R3Y consists of a single coil of copper wire, wound around a ferrite core and sealed within an epoxy case. The inductor has a rated DC resistance of 3.3 ohms and an inductance of 1μH with a tolerance of ±20%. The inductance of the SRU1028A-3R3Y is stable over a wide temperature range, from -55°C to +125°C. The small size and low inductance make the SRU1028A-3R3Y ideal for applications where space or size constraints are an issue.

The SRU1028A-3R3Y is designed to operate at a rated current of 0.25 amps, with a maximum current of 0.63 amps. The inductance of the SRU1028A-3R3Y is relatively stable over a wide range of current, making it suitable for use in switching power supplies and other circuits operating at high frequencies. The inductor is also designed to suppress noise and provide EMI filtering in high-density, high-speed circuits such as microprocessors and memory circuits.

The working principle of the SRU1028A-3R3Y is based on the phenomenon of inductance. When electric current passes through a wire, a magnetic field is created around the wire. This magnetic field generates a force that opposes the flow of current, thus creating a resistance to the current. This resistance is referred to as inductance and is measured in Henries. The greater the inductance, the greater the opposition to change in electric current.

In the case of the SRU1028A-3R3Y, the inductance is controlled by adjusting the number of turns in the coil and the shape of the core. The ferrite core of the SRU1028A-3R3Y enables it to provide a relatively high inductance with low DC resistance. This makes the SRU1028A-3R3Y ideal for applications where the inductance must be precisely controlled.

The SRU1028A-3R3Y is a versatile and reliable fixed inductor that is suitable for a wide range of applications. Its low DC resistance, high inductance, and stable operation over a wide temperature range make it well-suited for high-efficiency, low-noise power supplies and other circuits operating at high frequencies.

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