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Fixed Inductors: SDR1006-3R9ML Application Field and Working Principle

Inductors play an important role in the fields of electronics, as they form part of a vital circuit part – the inductor-capacitor (L-C) circuit – that is used in a wide range of applications. As such, inductors must adhere to exacting standards in order to serve their purpose. One such device is the SDR1006-3R9ML inductor from Sunon, an inductor with superior characteristics that make it well suited for a number of different applications.

Application Field of SDR1006-3R9ML

The SDR1006-3R9ML inductor has the type code F1006 and is part of the Sunon SDR range. As a general-purpose SMD (Surface-Mounted Device) inductor, it has an inductance of 3.9 µH, a maximum DC-resistance of 18.7 mΩ and a maximum saturation current rating of 2.35 A. It is therefore particularly suitable for use in situations where large levels of current need to be handled. It is often used in high-power supplies, lighting systems, cell-phone chargers, portable devices and engine modules. It is also well suited for use in switching applications like DC-DC converters, making this a highly adaptive device.

SDR1006-3R9ML Working Principle

The SDR1006-3R9ML is based on the core principle of electromagnetism. It comprises a coil made from copper or aluminium wire that is wrapped in multiple layers around an iron core. When electric current is passed through the coil, a magnetic field is created that induces a voltage in the windings of the coil. The magnitude of this voltage is determined according to the principle of electromagnetic induction, which states that when the flow of the current varies, so does the magnitude of the induced voltage. This process is used to convert electrical energy into more useful forms, such as providing slight increases or decreases of current in order to regulate different types of equipment.

In the case of the SDR1006-3R9ML, the induced voltage also determines the current handling capacity of the device, with the higher the current resulting in a higher saturation current level. The device also has a low internal temperature coefficient, low frequency and high reliability, making it well suited to a range of applications.

Conclusion

The SDR1006-3R9ML from Sunon is an adaptable and reliable SMD inductor. It has an inductance of 3.9 µH, a maximum DC-resistance of 18.7 mΩ and a maximum saturation current rating of 2.35 A, making it suitable for a wide range of applications where larger levels of current need to be handled. Its combination of low internal temperature coefficient, low frequency and high reliability make is an ideal choice for equipment such as high-power supplies, lighting systems, cell-phone chargers, portable devices and engine modules. Its working principle is based on the principles of electromagnetism, making it one of the most reliable and versatile inductors on the market.

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