T543D685M063AHW0757280

Tantalum - Polymer Capacitors

T543D685M063AHW0757280 is backed by the credentials of the leading supplier of tantalum - polymer capacitors, delivering reliable performance and excellent technology. The robust design guarantees low ESR and tight tolerance, making these capacitors the optimum choice for applications requiring flexible performance and reliable operation. This versatile product can also be used in combination with other capacitor technologies, including aluminum electrolytic and ceramic, for greater overall performance.

Application Field

Tantalum - polymer capacitors are widely used in a range of applications requiring high temperature operation, vibration/shock resistance, reliable operation and low ESR. These capacitors have found success in a range of industries, including automotive and industrial. Their stability in extreme temperature ranges makes them ideal for applications in engine management, military, audio/visual and communications systems, and space exploration.

Processors, power supplies, amplifiers, and CPUs all rely on tantalum - polymer capacitors for their high performance and reliable operation. These capacitors can also be found in audio/video equipment, televisions, and monitoring systems. Other applications in which tantalum - polymer capacitors are used include power factor correction, power rectification, filtering, coupling/decoupling, bypass/attenuation, and surge suppression.

Working Principle

Tantalum - polymer capacitors use a layer of polymer film between two layers of metal electrodes. This polarized single layer structure creates a capacitance based on the electrode-film-electrode capacitance. The polarization is achieved by applying a biasing voltage during the manufacturing process.

The metal electrodes in tantalum-polymer capacitors are made of either tantalum, which is an incredibly dense metal, or an alloy of tantalum and niobium. These electrodes are selectively oxidized and then dipped into a powdered polymer electrolyte. This electrolyte is then dried, causing the polymer electrolyte to bind to the electrodes and form a solid film.

The polymer electrolyte acts as a dielectric between the two metal electrodes. It creates a capacitance based on the area of the electrodes and the size of the area of the polymer film. As the voltage between the two electrodes increases, electrons from the negative electrode are added to the dielectric. This results in an increase in the permittivity of the dielectric, which leads to a corresponding increase in capacitance.

Tantalum - polymer capacitors are capable of operating at high temperatures without degrading due to their robust construction. In addition, their low ESR makes them excellent for low frequency applications such as processors, amplifiers, and rectification.