HKQ04021N4B-T

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Fixed Inductors

Inductors form a crucial component of electrical and electronic circuits, providing infinite possibilities for engineers in the field of electrical engineering. Fixed Inductors are used to suppress electrical noise, provide high-speed energy storage for high-frequency applications, provide AC blocking, and more. One particular fixed inductor is the HKQ04021N4B-T, a surface-mount device designed to reduce costs and improve space utilization in modern circuit designs by providing high performance while compact sizing and efficient clip mounting.

Application Field

The HKQ04021N4B-T is primarily used in low voltage electronic circuit designs, typically where the output voltage is between 5 and 40 V. The inductor is relatively small in size, with a 3.5mm x 1.8mm mounting package size, enabling it to be used in confined spaces and tight circuits, making it ideal for use in single board computers, laptops, consumer electronic devices, automotive electronics, mobile communications, and many other electronic applications. The device is also designed to pass stringent peak temperature requirements.

Working Principle

The HKQ04021N4B-T is an air-wound, fixed ferrite inductor rated at 40MH, which creates a low resistance path for the current. When a current is passed through the device, the magnetic field that is created in the core induces an opposing current in the core, which acts as a counter force against the applied voltage. The result is reduced voltage and current through the circuit, which in turn reduces the amount of power required to drive it. By creating a low resistance path for the current, the device also reduces electromagnetic interference (EMI), capacitive coupling, and other effects that can reduce circuit performance. This makes the device ideal for high frequency applications that require a low-resistance current path.

The device also features an extra-long clip that minimizes the electrical effect on the ground plane of the board, in order to provide a higher theoretical current handling capability. This longer clip also helps to reduce ground plane interactions, leading to improved efficiency and reliability for the circuit.

Conclusion

The HKQ04021N4B-T is a highly efficient and reliable fixed ferrite inductor, specifically designed to minimize costs and space requirements for modern circuit designs. By providing a low-resistance path, the inductor reduces voltage and current, as well as reduces EMI and capacitive coupling. Its extra-long clip also helps to eliminate ground plane interactions, leading to even higher efficiency and reliability for the circuit. The device is designed for 5-40V applications, making it ideal for single board computers, laptops, consumer electronics, automotive electronics, and other electronic applications.

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