SDR0805-3R9ML Inductors, Coils, Chokes

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Fixed inductors are passive components with resistance and inductance used in electrical and electronic circuits. Fixed inductors are also known as coil, choke, or reactor, depending on their application. The SDR0805-3R9ML is one such example of a fixed inductor component.

The SDR0805-3R9ML is a tiny, surface-mountable fixed inductor component with a size of just 0.8 × 0.5 mm and a height of 0.45 mm. Despite its small size, it can supply 3.9 mH inductance while handling up to 500mA current. It offers 0.15 ohms DC resistance. It is constructed using 7N copper wire coils with air gap cores.

The inductance of SDR0805-3R9ML is ideal for a range of applications, from impedance matching in high-frequency radio equipment to space saving in consumer electronic goods. It is also well suited for inductive switching and sensing in low-voltage switch mode power supplies (SMPS) or other power management applications.

Specifically, SDR0805-3R9ML is designed for use in switch-mode power supply circuits in computers, TVs, and other consumer electronics. The components’ tight-tolerance power handling and inductance specifications provide improved efficiency and low audible noise, thus improving the user experience. Additionally, this fixed inductor can also be used in miniature DC-DC converters, consumer sound systems, and ultra-wideband communication equipment.

The working principle of SDR0805-3R9ML is based on electromagnetic induction. When current flows through a conductor, a magnetic field is generated around the conductor. The magnetic field created by the current produces a counter-force, which causes the inductance. The more current that flows through the conductor, the larger the inductance and the stronger the counter-force.

The SDR0805-3R9ML is a high-performance fixed inductor component, providing reliable performance in a variety of applications. Its small size and low DC resistance make it an excellent choice for space-constrained products. The high-power handling and precise inductance specification make it an ideal choice for switch-mode power supply circuits and other high-frequency applications.

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