TAJC156M020H

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Tantalum capacitors are a type of electrolytic capacitor, this capacitor uses a small amount of tantalum powder and other components to form a metal-electrolyte conductive material. The TAJC156M020H is one type of tantalum capacitor and can be suitable for various electronic applications.

Features

The TAJC156M020H features a capacitance of 0.22μF, which has an ESR of 0.15Ω, a voltage rating of 10V DC, and a temperature range of -55°C to +125°C. It is also rated to -55°C surge, with a leakage current of 2.6mA maximum. This capacitor can also handle a ripple current of 0.33A at 100kHz and 1.20A at 20kHz. Additionally, this capacitor weighs only 1gm making it ideal for applications where space is limited.

Working Principle

Tantalum capacitors are composed of tantalum pentoxide as the dielectric and tantalum powder as the electrode. The most common circuit symbol for tantalum capacitors is a branched triangle with a horizontal line below it. The two triangles represent the anode and cathode, respectively. The horizontal line indicates the capacitors polarity.

During operation, the capacitor is energized by applying a DC voltage across its anode and cathode contacts. This causes the oxide layer to become conductive and capacitive and current begins to flow through the device. The electrolyte, a wetting agent dissolved in water, forms an interface between the oxide layer and the metal electrode, forming two electric fields. This results in an electrochemical reaction, where charges are exchanged between the oxide layer and the metal.

The capacitance is proportional to the surface area between the anode and the oxide layer, and is usually measured in Farads (F). The voltage rating of a Tantalum capacitor is the maximum voltage it can handle before breakdown. DC leakage current ratings determine the amount of current that can flow through a capacitor over a specified time frame.

Application Field

The TAJC156M020H is primarily used in AC/DC converters, switching power supplies, and DC-DC converters. It is also suitable for applications such as high-speed data communication, cell-phone chargers, and other portable electronic devices. This capacitor is especially good when used in switching power supplies because of its low ESR and high ripple current ratings.

In addition to the TAJC156M020H, other tantalum capacitors available include radial, multi-layer ceramic (MLCC), and axial-type capacitors. Depending upon the application, the right type of capacitor should be chosen for optimal performance.

Conclusion

The TAJC156M020H tantalum capacitor can operate in an environmental temperature range of -55°C to +125°C and offers good performance for AC/DC converters, switching power supplies, and DC-DC converters, among other applications. In addition, it is rated for a maximum ripple current of 0.33A at 100kHz, which is ideal for power supply applications. Moreover, this capacitor is lightweight, making it perfect for applications where space is at a premium.

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