T540D477M2R5BH87057610

Tantalum - Polymer Capacitors

T540D477M2R5BH87057610 capacitors are a type of non-polarized, high reliability, surface mount capacitors utilizing the latest metallized polymer tantalum technology. Developed for circuits where device footprint and weight are critical, they offer a high volumetric efficiency in miniature package sizes. This allows for the use of smaller capacitors to achieve the rated capacitances.

These capacitors are designed specifically for applications where space is limited, and are used in a wide range of industries, such as telecoms, automotive, medical electronics, military, and industrial markets. Typical applications include mobile phones, laser systems, energy storage systems, automotive passenger comfort systems, radar systems, and aviation.

Key Features

• High reliability.
• High volumetric efficiency.
• Non-polarized.
• Robust, flexible, and re-configurable.
• Low profile.

Applications

• Mobile phones.
• Laser systems.
• Energy storage systems.
• Automotive passenger comfort systems.
• Radar systems.
• Aviation.

Working Principle

The T540D477M2R5BH87057610 capacitor comprises two metallic conductors separated by an insulating layer, or dielectric. The current produced by an external voltage source creates electrons that move from one metallic conductor to the other, forming a charge and corresponding electric field. When the switch is closed, the electron field continues to build, causing the two metallic conductors to saturate. The intensity of the electric field determines the current flow, and this to determine the capacitance of the capacitor. The capacitance typically varies from 20 to 100 picofarads.

Limitation

Although the T540D477M2R5BH87057610 capacitors offer a high level of reliability, their performance degrades with temperatures greater than 70°C (158°F). Additionally, their shelf life reduces at elevated temperatures, and their susceptibility to vibration and shock is much higher than with other types of capacitors. These factors should be considered when selecting capacitors for particular applications.