P3519-224J

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Fixed inductors have a variety of applications in electrical and electronic circuits, ranging from rectifying power supplies to choke circuits. The P3519-224J is a fixed inductor developed by Holtek Semiconductor, Inc. and is available in multiple package formats. This article will explain the application field and working principle of P3519-224J.

Application Field

The P3519-224J is designed for use in DC-DC power converters, automotive power systems, battery-powered equipment, and other current control applications. It offers an excellent combination of inductance, current rating, and saturation voltage and is suitable for high-frequency switching converters and other current-sensitive designs. The P3519-224J also features low losses, low temperature coefficient, and ESD protection.

Working Principle

The P3519-224J is an adjustable fixed inductor with high saturation current and low total DC resistance. It consists of a core material, usually made of ferrite or iron-powder, and a coil made of wire. When an alternating current (AC) is supplied to the coil, it generates an electromagnetic field due to the changing current flow. This field induces a voltage in the coil, and this voltage is the inductance of the P3519-224J.

The saturation current of the P3519-224J is determined by the amount of current it can handle without its magnetic properties becoming saturated and impacting its inductance. This saturation current can be changed by adjusting the number of wire turns in the coil for a given core size. In addition, the P3519-224J has a low temperature coefficient, which allows it to be used in temperature-sensitive applications such as automotive power systems.

Another important factor to consider when selecting the P3519-224J is its DC resistance. This is an important property when designing current control circuits, as the resistance determines how much of the current is dissipated in the coil rather than being supplied to the circuit. The lower the DC resistance of the P3519-224J, the less power is wasted in the inductor, allowing more of the current to be delivered to the circuit.

Conclusion

The P3519-224J is an adjustable fixed inductor optimised for use in DC-DC power converters, automotive power systems, and battery-powered equipment. It offers an excellent combination of inductance, current rating, and saturation voltage and is suitable for high-frequency switching converters and other current-sensitive designs. The P3519-224J also features low losses, low temperature coefficient, and ESD protection.

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