HKQ04021N4C-T

Fixed Inductors

Fixed inductors are electronic devices that are designed to store energy in the form of a magnetic field. They are commonly used to increase voltage or current in a circuit. In a fixed inductor, the inductance remains constant regardless of the varying magnetic and electric fields. A fixed inductor can be used in a variety of applications that involve the conversion of electrical energy into magnetic energy and vice versa. One such application is the HKQ04021N4C-T.

The HKQ04021N4C-T is a specialized, low power fixed inductor. This device is capable of delivering a maximum power density of 0.78 W/cm3 at ambient temperature. This device is suitable for applications with limited space requirements, including switching power converters, DC/DC converters, and AC/DC converters.

Working Principle

A fixed inductor works on the principle of inductance. When a voltage is applied to the terminals of the device, a changing magnetic field is generated in the coil surrounding the core. This changing magnetic flux induces a counter emf proportional to the rate of change of flux. This emf opposes the applied voltage, and the resulting current is limited to a value proportional to the applied voltage.

Because the inductance of the device is fixed, the device can be used as a simple filter. In a filtering application, the inductor opposes the flow of alternating current (AC), allowing only the desired frequency of AC signals to pass through. This application is useful for audio and video applications where unwanted signals are eliminated.

Applications

The HKQ04021N4C-T is designed for a variety of low power applications. This device is suitable for use in high frequency, fixed-frequency, pulse suppression, load sharing, and snubber circuits. It is also ideal for use in switching power converters, DC/DC converters, and AC/DC converters.

This device is also useful in RFID (Radio Frequency Identification) applications due to its ability to provide stable magnetic fields. In these applications, the inductors provide the necessary multiplexing of supply frequencies to enable multiple tags to be identified simultaneously.

Additionally, the inductance of the device helps to reduce the size of the circuit, as well as to reduce the circuit complexity. This makes the HKQ04021N4C-T ideally suited for applications where space is at a premium.

Conclusion

The HKQ04021N4C-T is a fixed inductor capable of providing a maximum power density of 0.78 W/cm3 at ambient temperature. This device is suitable for low power applications, including RFID, switching power converters, DC/DC converters, and AC/DC converters. Additionally, its ability to provide stable magnetic fields, and its small size and complexity make it well-suited for applications where space is at a premium.