199D475X96R3AXV1E3

Tantalum Capacitors

Tantalum capacitors are highly reliable capacitors which are widely used in both consumer electronics and industrial applications. The capacitors are known for their low ESR (Equivalent Series Resistance) and high ripple currents. They are typically available in a much smaller package size than comparable ceramic capacitors, ensuring that the space for placing them in the circuit is limited.

The most common type of tantalum capacitor is the polarised version, which consists of two terminals – the positive (anode) and the negative (cathode) terminals. The anode is usually the metallic plate, while the cathode is the non-metallic plate. Tantalum capacitors are often marked with the anode and cathode symbols, so the user can identify them. The electrolyte between the two plates is typically aqueous solution, although solid electrolytes have been used in some applications.

Tantalum capacitors provide a range of advantages over other types of capacitors, such as ceramic and polyester. Firstly, they offer much higher capacitance values in a given package size with low ESR compared to other types, which makes them highly suited to low voltage applications. Secondly, they also have a long life, as long as 200 times longer than polyester capacitors and several times longer than ceramic capacitors. Finally, tantalum capacitors can be used in higher temperatures than other types, making them suitable for use in extreme operating environments.

199D475X96R3AXV1E3 Application Field and Working Principle

The 199D475X96R3AXV1E3 model of the tantalum capacitor is designed for applications requiring high capacitance and low ESR. This model has an extremely low ESR of 0.4 ohms and a capacitance rating of 475uF. It is typically used in PCs, server motherboards, and medical equipment.

The 199D475X96R3AXV1E3 works on the same principle as other types of electrolytic capacitors—providing energy storage with a low resistance and high capacitance. It is made up of two metal plates, separated by an insulating layer of tantalum oxide. The electrical field generated between these two plates when voltage is applied is determined mainly by the size of the capacitor and the distance between the plates. The greater the distance between the plates, the higher the amount of energy stored. The applied voltage across the plates causes the molecules of the electrolyte to move and form an electrical bridge, resulting in a flow of electrons between the two plates. As the electrons travel between the plates, they establish a steady charge on both plates, resulting in a stable energy storage.

Its main benefits are its reduced size, which allows it to fit in miniaturised circuits, as well as excellent performance over a wide temperature range. The 199D475X96R3AXV1E3 is also relatively low cost compared to other types, making it a popular choice for many applications.