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Fixed Inductors

Inductors are electrical components that have the ability to store energy in the form of a magnetic field. When an alternating voltage or current is applied to a circuit containing an inductor, a voltage is induced in the circuit that opposes the change in current. This behavior is known as inductive reactance. There are several types of inductors available, including fixed inductors, air-core inductors, and toroidal inductors. The LQH55DN3R3M03L is an example of a fixed inductor.

Application Field and Working Principle of the LQH55DN3R3M03L

The LQH55DN3R3M03L fixed inductor is used in various applications, such as power supplies, DC-DC converters, voltage regulators, and signal conditioning in electronic circuits. It is a high-reliability product with excellent electrical and temperature characteristics, providing a robustness necessary in power management applications. As a fixed inductor, its working principle is based on the following: when a current flows through the inductor\'s coil, it produces a magnetic field, which opposes the change in the current. This effect is known as inductance, and the level of inductance is usually determined by the number of coils and their cross-sectional area.

The inductance of the LQH55DN3R3M03L is 3.3 μH at a rated current of 5.5 Amps, with a 0.1OHM DC resistance. These parameters guarantee that the inductor does not become a source of significant losses. Furthermore, the low DC resistance of the LQH55DN3R3M03L allows it to maintain a constant inductance over a wide range of currents, ensuring that power supplies or other systems remain in regulation. Additionally, this type of inductor provides protection from overvoltage transients with rated voltage up to 10Vp.

The construction of the LQH55DN3R3M03L is composed of a single-layer, high-permeability magnetic core enclosed inside a coil of enameled flat wire, which provides electrical insulation. This package has an elliptical shape and is designed to be mounted on a printed circuit board using conventional soldering. It is encased in an ultra-DIP standard plastic package, with dimensions of 22.3mm x 15.2mm x 10.2mm.

Performance Characteristics of the LQH55DN3R3M03L

The performance characteristics of the LQH55DN3R3M03L are as follows:

• Inductance: 3.3 μH ± 20%
• Rated DC Current: 5.5A
• Rated Voltage: 10Vp
• DC Resistance: 0.1Ω
• Working Temperature: -40°C to +125°C
• Storage Temperature: -40°C to +125°C
• Housing/Package: Ultra-DIP 22.3mm x 15.2mm x 10.2mm

In conclusion, the LQH55DN3R3M03L fixed inductor is a component with excellent electrical and temperature characteristics that can be used in a wide variety of electronic circuits such as power supplies, DC-DC converters, and voltage regulators. Its 3.3μH rated inductance and low DC resistance make it suitable for systems that require precise regulation and protection from overvoltage transients.

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