Fixed Inductors

Inductors, also known as coils, are components that possess an inductance.- a property of storing energy in the form of a magnetic field. Inductors are most commonly used in electronics applications to block or pass AC current while allowing DC current to flow. Fixed inductors, such as the MPI4040R3-150-R, come in different shapes and sizes and have various parameters, including inductance value, DC resistance, current-carrying capacity, and maximum operating frequency.

Applications of MPI4040r3-150-R

The MPI4040R3-150-R is a small case, cost-effective, leaded inductor designed for use in consumer electronics products such as portable media players, digital cameras, cell phones, and notebook computers. Its small size, low profile, and lightweight design make it ideal for high volume, low-profile applications.

The MPI4040R3-150-R is available in different values of inductance: 150µH, 180µH and 210µH. It has a maximum DC resistance value of 0.072 ohms, allowing it to pass and block high frequencies and currents efficiently. MPI4040R3-150-R has an operating temperature range of -20 to 85 degrees Celsius, and its rated current ranges from 0.5 to 2 amps. It is also able to handle a maximum surge current of 5 amps.

The MPI4040R3-150-R is capable of frequencies of up to 2 MHz, which makes it ideal for high-frequency switching power supply (switching DC-DC converters), power factor correction (active power factor adjustment) and data communication (LTE/mobile). It is also suitable for signal processing, audio amplification, and radio frequency (RF) applications.

Working Principle

The working principle of the MPI4040R3-150-R fixed inductor can be explained using Faraday\'s Law of Induction. According to this law, a voltage is induced in the coil when there is a change in the magnetic field surrounding it. This voltage can be opposed or added to the applied voltage, depending on the direction of the change.

An inductor acts like an electrical filter when current passes through it. It obstructs the flow of AC current and lets DC current pass. This is because, at lower frequencies, the magnetic field generated by an inductor takes time to build up. Thus, AC voltage is opposed by the field and is converted to heat. But at DC voltages, the magnetic field is already almost at its maximum strength and does not oppose the voltage.

MPI4040R3-150-R inductors are specifically designed to handle high-power surge currents, preventing them from damaging other components or the circuit itself. Their high inductance values and low DC resistance reduce voltage ripple from DC-DC converters, as well as reducing power consumption and losses in the power supply circuit.

Conclusion

The MPI4040R3-150-R is a small, cost-effective, leaded inductor that is ideal for high-volume, low-profile applications such as consumer electronics products. It has a maximum DC resistance value of 0.072 ohms, can handle currents up to 2 amps, and has a frequency range of up to 2 MHz. It is suitable for use in high-frequency switching power supply, power factor correction, data communication, signal processing, audio amplification, and radio frequency applications. The working principle of the inductor is based on Faraday\'s Law of Induction and its high inductance values and low DC resistance reduces voltage ripple from DC-DC converters, as well as reducing power consumption and losses in the power supply circuit.