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LK21253R9M-T Fixed Inductors

Fixed inductors are a kind of electronic component used to store energy in a magnetic field. The LK21253R9M-T fixed inductor is an inductor designed to provide high current throughput and low resistance in a compact, economical package. It is especially suitable for use in power-conversion circuits.

Application Field

The LK21253R9M-T fixed inductor is widely used in various kinds of electronic applications such as power switches, DC-DC converters, motor control, lighting, and more. It is especially suitable for use in power-conversion circuits such as AC transformers, PFC (Power Factor Correction), EMI (Electromagnetic Interference) filters, and Voltage Regulators.

Due to its superior power filtering and current limit characteristics, the LK21253R9M-T is a great choice for use in high power applications such as telecom, industrial, and automotive equipment. Moreover, its fairly low profile and low DCR (DC resistance) makes it well-suited for use in high-density PC boards, helping to keep the board layout compact and efficient.

Working Principle

The LK21253R9M-T fixed inductor works on the principle of magnetic energy storage. Magnetic energy is produced when electric current flows through a coil of wire, and this magnetic energy is temporarily stored in the coil. This temporary storage of energy makes the inductor act as an AC-to-DC filter, helping to limit high-frequency noise in a circuit.

The LK21253R9M-T also helps to smooth out alternating current (AC) power supply by its built-in inductance. The inductance of the coil slows down the alternating current which is fed into it, which helps to filter out any high-frequency noise on the power supply. In addition, the LK21253R9M-T’s inductance helps to stabilise the current flowing through the circuit, preventing any sudden spikes which may damage connected components.

The LK21253R9M-T also acts as a "soft-start" inductor for motors, since its inductance slows down the initial current which is drawn by the motor. This helps to keep current levels within the capacity of the motor, while also helping to reduce the possibility of current spikes due to sudden loads.

Conclusion

The LK21253R9M-T fixed inductor is a great choice for a wide variety of applications thanks to its low DCR, high current throughput, and low-profile design. It is suitable for use in power-conversion circuits, high-power applications, motor control, and more. Its built-in inductance helps to filter out any high-frequency noise, as well as stabilise the current and provide soft-start capability for motors.

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