T540D687M2R5BH86057610

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Tantalum - Polymer Capacitors, or “Tantalum Polys”, are a type of electrolytic capacitor that utilizes a functionally thin layer of solid polymer as the capacitors’ “dielectric.” This thin layer of polymer is sandwiched between two sheets of highly conductive metal foil - which are then permanently sealed within its anodized aluminum shell.  Due to its very thin dielectric layer, Tantalum Poly capacitors demonstrate superior performance in comparison to the non-polymer electrolytic capacitors, though their construction makes them slightly more vulnerable to thermal and mechanical shock, vibration, and corrosion.

T540D687M2R5BH86057610 is a type of Tantalum Polymer capacitor. The “D” on this Series denotes a “dropped” case style, which offers generic radial-leaded components for simplified installation without paying for the higher cost of an A-series component. The “M” indicates a 25V rating. The other numbers indicate the value of the capacitor in terms of capacitance, voltage, and temperature. In this case, T540D687M2R5BH86057610 is rated for 25V and 12.5uF.

Tantalum-Polymer capacitors are most commonly used in applications requiring high capacitance density, low volumetric size, startup/snubber capacitors, smoothing/filtering applications, decoupling/bypassing applications and energy storage on-board voltage regulation systems. Their construction and behavior make them ideal for low-frequency filtering, hold-up and energy storage applications like laptop power supplies, switching power supplies, automotive charging systems, and medical/photonic device power supplies.

Tantalum polymer capacitors work by forming an electrolytic layer along the two metal layers of the capacitor, which effectively functions as a dielectric material that divides the two metal layers into two distinct electrical plates with a fixed distance. This effectively stores electrical energy within the capacitor, allowing it to be discharged when it is needed. This process is known as “charge and discharge”, and this cycle is repeated again and again, allowing the capacitor to continuously store and release electrical energy as needed for the application.

Tantalum polymer capacitors are widely used due to the fact that they offer low equivalent series resistance (ESR), high capacitance-to-volume ratio, high self-healing properties, and high temperature stability. Additionally, they are well suited for use in high voltage applications, due to the fact that they can withstand high voltages up to 400V and have a low leakage current at such voltages. Furthermore, they can also function at low temperatures, down to -55C.

In summary, T540D687M2R5BH86057610 is a type of Tantalum Polymer capacitor that is commonly used for applications requiring high capacitance density, low volumetric size, startup/snubber capacitors, smoothing/filtering applications, decoupling/bypassing applications and energy storage on board voltage regulation systems. The features of Tantalum Polymer capacitors make them ideal for low-frequency filtering, hold-up and energy storage applications.

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