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Fixed Inductors: MHQ0402PSA2N2CT000 Application Field and Working Principle

Fixed inductors, also known as inductors, are basic passive electronic components that store the energy from the flowing electric current in magnetic form. The MHQ0402PSA2N2CT000 is a tiny fixed inductor with features to fit in a variety of electronic devices, such as AC-DC power supplies, battery chargers, LED drivers and switching power supplies. With its small size, low profile and low DCR (DC Resistance) compared to other SMD inductors, the MHQ0402PSA2N2CT000 is suitable for many medium- and high-power applications. This article will explain the application field and working principle of the MHQ0402PSA2N2CT000.

MHQ0402PSA2N2CT000 Application Field

The MHQ0402PSA2N2CT000 is a surface mount inductor with an inductance of 2.2nH, which is suitable for use in many electronic devices. This product is designed mainly to fit in switch mode power supplies (SMPS), DC-DC converters, and other power supplies where its small size gives it an advantage. It is also well-suited for use in LED drivers, industrial lighting systems, and other automotive electronics applications due to its broad temperature range, high efficiency, and high surge current ratings. The low resistance ensures reliable power delivery in these applications.

Other applications of the MHQ0402PSA2N2CT000 include audio systems, high frequency communication electronic equipment such as GPS receivers and WIFI radios. Moreover, its heat-resistant and stable magnetic properties make it suitable for use in high-sensitivity sensing equipment.

MHQ0402PSA2N2CT000 Working Principle

The MHQ0402PSA2N2CT000 exploits the fundamental principles of Faraday’s law of induction to work. In simple terms, when alternating current flows through an inductor, a magnetic field is created around the device, and this field creates a voltage across the inductor, which opposes the input voltage, creating a “back EMF” (electromotive force).

The magnitude of the back EMF depends on the frequency of the input current, as well as the number of turns and the magnetic core material used. This reaction of creating a back EMF is the primary function of an inductor and is how the MHQ0402PSA2N2CT000 works. The inductors properties are such that the less current goes through it; the greater the EMF, and the more current goes through, the lower the EMF.

The MHQ0402PSA2N2CT000 has a 1.2A max saturation current, indicating the current will not exceed its max saturation value when tested with a sinusoidal wave input. It also has a 1.2A rated current, meaning the device can sustain continuous current deliveries at or below the rated value without any damage to the device. Additionally, the device’s DC resistance (DCR) is extremely low, making it ideal for power applications.

Conclusion

The small size and low resistance make the MHQ0402PSA2N2CT000 fixed inductor well-suited for medium and high power applications in many electronic devices, such as AC-DC power supplies, battery chargers, LED drivers, switching power supplies, audio systems, high frequency communication electronic equipment, and sensing equipment. The device works as per Faraday’s law of induction, creating a back EMF in reaction to the alternating current passing through, and is designed to have a maximum saturated current of 1.2A and a DC resistance of 0.067 ohms. Its small size, low profile, and low DCR make it perfect for a wide array of applications.

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