4445R-18J

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Fixed inductors are components used in power systems for energy storage. The most common type of inductor is the 4445R-18J medium power inductor. It is a three-terminal, medium power device, widely used for applications ranging from low-power dc/dc converters to high-power converters.

The 4445R-18J inductors have a temperature range between -40°C to 125°C and a maximum DC bias current of 18A. This makes them ideal for applications where high temperature, high current, and high switching noise immunity are required. They are also designed with internal varistors to protect against high voltage spikes.

In terms of applications, the 4445R-18J inductors are most commonly used in; power supplies, power converters, DC-DC converters, switching power supplies, motor control circuits, etc. The inductors are designed to operate in both SMPS (Switched Mode Power Supply) and PWM (Pulse Width Modulation) systems. They are also used in a wide variety of communications and automotive applications.

The 4445R-18J inductor is designed to work in both AC and DC circuits. In AC circuits, it acts as a filter inductor, allowing alternating current to pass while blocking direct current. It also helps reduce radio frequency interference and protect from power overload. In DC circuits, the inductor acts as an energy storage device, allowing the circuit to store and release energy on demand.

The working principle of the 4445R-18J inductors is based on Faraday\'s law of induction. According to Faraday\'s law, an inductor is a device that stores energy in the form of a magnetic field when a current passes through it. When the current is interrupted, the energy stored in the magnetic field is released, causing the inductor to produce a voltage. This voltage can be used to power other components, such as transistors and resistors.

The 4445R-18J inductors are designed to be highly reliable, with a rated MTBF of over 500,000 hours. The inductors are also RoHS compliant and UL recognized for safety and quality assurance. They are available in a variety of sizes and inductance values, making them a suitable choice for a wide range of applications.

In summary, the 4445R-18J inductor is a three-terminal, medium-power fixed inductors widely used in dc/dc converters, switching power supplies, power converters, and motor control circuits. It is designed to operate in both AC and DC circuits and has an MTBF of over 500,000 hours. The inductor is also RoHS compliant and UL recognized, making it a reliable choice for a wide range of applications.

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