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Tantalum Capacitors

The 150D684X9035A2B is an example of a tantalum capacitor. Tantalum capacitors are components that store electrical energy and are used within electrical circuits and systems in order to control current flow. Being used extensively in a multitude of applications, from the consumer electronics market all the way through to medical, aerospace and military uses, Tantalum capacitors offer stability, reliability and cost effectiveness.

Application Fields

Tantalum capacitors have a wide range of applications across numerous fields. For instance, they are an essential component of medical imaging and ultrasound scanners, providing a regulated voltage that is needed for accurate imaging. Additionally, they are used in military applications, such as radar and defence systems, as their stability and robustness make them ideal for withstanding vibration, shock and temperature changes. In consumer devices, such as mobile phones, cameras, computers and portable music players, the properties of Tantalum capacitors make them well suited for providing the regulator voltage required for such devices.

Working Principle

The 150D684X9035A2B is an example of a polymer tantalum capacitor. Tantalum capacitors are primarily made up of tantalum anode wires, electrolyte and a dielectric material. The anode wire acts as a carrier material, forming a pellet shape which then represents one of the electrodes of the capacitor. The dielectric material is placed between the anode and the cathode, forming the other electrode of the capacitor. The dielectric material is highly durable and gives the capacitor its voltage, stability and capacitance ratings, which are defined by the thickness of the dielectric, its electrical properties and the type of electrolyte chosen.

When an electric charge is applied to the electrodes of a tantalum capacitor, the voltage causes an electrochemical reaction to occur, attracting positively charged ions that migrate and accumulate at the anode surface. This forms a monomolecular layer of semi-insulating material called the “Helmholtz” layer between the anode and cathode, which acts as the dielectric. The resulting electric field in the dielectric material together with energy stored in the Helmholtz layer causes the capacitor to be able to store charge, and this is the basis of the fundamental working principles of the tantalum capacitor.

Advantages

The main advantages of using tantalum capacitors over other capacitor types include: their ability to store much more energy than other types of capacitors; the fact they are smaller in size than other capacitors; their long life cycle; their relatively low cost; the fact they are highly efficient, and their low leakage current.

These advantages make tantalum capacitors among the most popular types of capacitors used in modern circuitry. They are used in a broad range of applications, from desktop computers, to mobile phones, medical scanners, automotive and aerospace industry to name but a few, and as such, the tantalum capacitor market continues to grow.

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