T551B107M025AH

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Tantalum - Polymer Capacitors

Tantalum-polymer capacitors, or polymer electrolytic capacitors, are a type of capacitor that combines the performance advantages of tantalum capacitors with the cost effectiveness of wet aluminum electrolytic capacitors. These hybrid capacitors are an ideal choice for application fields where electrolytic capacitor leakage, ripple current, and high temperature stability are the main driving factors.

The T551B107M025AH tantalum-polymer capacitor provided by AVX Corporation is a non-polarized capacitor that offers a high voltage rating of 10 volts, a capacitance of 0.1µF, and a working temperature range of -55 to +105°C. They are designed for working in DC and AC circuits, and are ideal for use in aerospace, military, and high-performance automotive applications.

Working Principle

Tantalum-polymer capacitors are comprised of a sintered anode made of tantalum, a porous anode current collector, an anode hydrated oxide barrier dielectric, a cathode, and a cathode current collector. The capacitors have a large amount of surface area, which translates into a high amount of capacitance. When a voltage is applied across the capacitor’s leads, the charge on the tantalum anode is discharged into the cathode.

When the capacitor is discharged, the oxide layer of the anode collapses, releasing water in the form of steam, thereby recharging the capacitor. As the oxidizing and reducing process continues, the capacitor maintains its capacitance level. The amount of current that can be passed through the capacitor is determined by the amount of hydrogen that is necessary in order to create an equal charge on the anode and cathode.

Application Field

Tantalum-polymer capacitors are typically used for high-voltage applications in space-constrained locations due to their compact size. They are used to provide a capacitive element in AC and DC circuits, and can also be used as a bypass capacitor in analog circuit designs. Their high temperature stability and low leakage current makes them ideal for use in high-temperature applications such as automotive, medical, and military applications.

They are also used as a voltage regulator in high-voltage circuits, and are used as a filter capacitor in switching power supplies. In addition, they have seen considerable use in power amplifiers for audio applications, as their high ripple currents can provide extra punch to the sound. They are also used as decoupling capacitors in computer motherboards to minimize voltage variations.

The T551B107M025AH tantalum-polymer capacitor from AVX Corporation is an ideal choice for a wide range of applications requiring high-capacitance and temperature stability. It is suitable for use in harsh environments and offers long-lasting reliability.

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