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Tantalum Capacitors: 8-1879058-9 Application Field and Working Principle

Tantalum capacitors, also known as Ta or TaCaps or tantalum electrolytic capacitors or tantalum-dioxide-dielectric electrolytic capacitors, are a type of electrical capacitor with a tantalum anode. A unique feature of these capacitors is that they have a decreased corrosion rate as compared to other types of capacitors, due to their anodic layer being a tantalum-dioxide-oxide combination.

History of Development

The first tantalum capacitor developed was the tantalum-dioxide-dielectric electrolytic capacitor, which was invented in 1951 by the German physicist Professor A. Donauer. He developed a compact form of capacitors with high impedance and self-healing properties. Since then, the technology has been developed and refined and the capacitance and tolerances have been improved. This type of capacitor has now become a widely used component in many electronic systems.

Basic Structure and Physical Properties

The 8-1879058-9 type of capacitors are composed of three main parts. First, the tantalum powder forms the anode, then the tantalum electrolyte forms the cathode. Finally, a dielectric layer of tantalum dioxide oxide is placed between the anode and cathode. This layer acts as an insulator and prevents current from flowing between the two electrodes. The overall construction of the capacitor is compact and robust, making it highly suitable for many different types of applications.

The physical size of the capacitor can vary depending on the capacitor\'s capacitance. Higher capacitance requires larger size and the capacitor\'s size also increases with increased operating voltage. The capacitance of the 8-1879058-9 series is typically in the 0.33uF to 33uF range. The voltage handling capability of these capacitors can range from 10V to 100V.

How do They Work?

Tantalum capacitors work based on the principle of differential capacitance. This means that when an applied voltage is applied to the capacitor, the charge which is stored on the anode in the form of tantalum powder will and attract electrons to the negative side of the capacitor. This will generate a flow of current in the circuit, which can be used for a variety of purposes.

The tantalum electrolyte layer is also an important part of the capacitor. This layerinsulates the anode and cathode from each other, which helps to keep the capacitance stable and constant. It also prevents dendrite formation, which occurs when metal ions from the electrolyte accumulate on the anode or cathode. This allows the capacitor to function reliably over a wide range of temperatures and operating voltages.

Advantages and Disadvantages of 8-1879058-9 Tantalum Capacitors

The 8-1879058-9 series of capacitors offers a number of advantages compared to other types of capacitors. These include a high capacity to size ratio, good insulation, a low leakage current, and a wide temperature range. In addition, these capacitors are not affected by moisture or humidity, providing a high level of reliability.

However, as with all electronic components, there are some disadvantages. These include a limited capacitance range, which can be problematic for certain applications. In addition, these capacitors are prone to failure due to oxidation over time, and they are also quite expensive.

Applications

Tantalum capacitors have found a wide range of applications in the electronic industry, including medical, aerospace, automotive, computer, mobile phone, and consumer product industries. One major application is for storage and filtering applications, due to the capacitor\'s high capacitance and voltage ratings, long shelf life, and low leakage current. In addition, they are suitable for use in many applications such as AC/DC converter circuits, delay line circuits and timing circuits. Other applications include radio frequency (RF), waveguide circuits, switching power supplies, digital signal processors (DSPs), and antenna circuits.

Conclusion

Tantalum capacitors have become a popular choice in the electronics industry due to their high capacitance and voltage ratings, low leakage current, and long shelf life. Moreover, their anodic layers are a unique combination of tantalum-dioxide-oxide, which provides improved corrosion resistance compared to other capacitor types. The 8-1879058-9 series of capacitors offers a wide capacitance range, making them suitable for a variety of applications, from medical to aerospace, computer and mobile phone industries.

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