T540D476K020CH8605

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Tantalum - polymer capacitors are widely used in electronic devices due to their small size and high capacitance, scalability, and high temperature stability. The T540D476K020CH8605 is a common rating for this type of capacitor. This article will provide information about the application field and working principle for this device.

Application Field

Tantalum – polymer capacitors are suitable for use in a variety of applications, from server power supplies to space-flight systems. Their suitability and reliability stem from their compact size, minimal self-heating, low leakage current, and high capacitance. The T540D476K020CH8605 has a capacitance of 47uF, a voltage rating of 20V, and a temperature rating of -55°C to 125°C.

These capacitors are often used in switch mode power supplies, allowing for stable output power while minimizing energy losses, as they can quickly filter out AC ripple. They can also be used to smooth out energy differences between system components, and provide input/output filtering for micro circuits. In addition, they can be used to provide voltage filtering or bypassing, or provide stabilization of AC line voltages.

Working Principle

Tantalum - polymer capacitors utilize a metal oxide film as a dielectric. When the metal oxide film is placed in between two electrodes and a voltage is applied, an electric field will be generated, creating an attraction between the electrodes. The attraction increases along with the voltage, and when the maximum allowable voltage is reached, the metal oxide film will start to chop, forming an internal connection between the terminals. Once this connection is formed, the capacitance is determined by the area of electrodes and the dielectric thickness.

The construction of Tantalum – polymer capacitors is enhanced by their high conductivity and low process impairments. The metal oxide film has a low thermal expansion coefficient and a low electrical surface resistance, making it ideal for operation at high temperatures. These capacitors are also well-suited for operating in diverse environmental conditions, such as temperature, humidity, EMC, and mechanical shock.

Conclusion

The T540D476K020CH8605 is a popular rating for Tantalum - polymer capacitors, with a capacitance of 47uF and a voltage rating of 20V. These devices are widely used in applications from server power supplies to space-flight systems, and provide an excellent combination of size, capacitance, temperature tolerances, and reliability. Their working principle relies on the metal oxide film to create a dielectric, with the capacitance determined by the area of electrodes and the dielectric thickness.

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