T540D477M2R5DH86057280

Tantalum - Polymer Capacitors

Tantalum-Polymer capacitors are widely used in electronics devices due to their exceptional performance characteristics. They are made using conductive polymer material and consist of two distinct plates comprised of alternating layers of dielectric and metal layers. The metal plates are generally made out of Tantalum, which provides a good combination of electrical and thermal properties. The polymer material used between the plates has a low internal resistance which allows it to store and release energy quickly.

T540D477M2R5DH86057280 application field and working principle

T540D477M2R5DH86057280 is a type of Tantalum – Polymer Capacitor manufactured by KOA Speer Electronics Inc. This specific model is a surface-mount type and uses a solid state construction consisting of alternating layers of tantalum and polymer material. It has a high capacitance value of 4.7uF, and a voltage rating of 2.5V. This capacitor is mainly used in high-density applications requiring both low voltage and high capacitance. It has a low equivalent series resistance (ESR) and is highly reliable for use in applications such as military, aerospace, and medical.

In order to properly describe the working principle of a Tantalum – Polymer Capacitor, it is necessary to first understand the basic principles of electrical capacitance. This property of electrical components is the ability to store and release energy when exposed to an electrical field. The energy is stored in the form of an electrical charge on the capacitor\'s two plates, separated by a dielectric material. When an electrical voltage is applied between the plates, a capacitance is created, and energy is stored electrostatically.

When a voltage is applied to a Tantalum – Polymer Capacitor, the stored charge is released and a potential difference is created between the two plates. This potential difference will cause an electric current to flow through the external circuit that the capacitor is connected to. The charge stored in the capacitor will then begin to dissipate and will cause the voltage and current in the external circuit to decrease. As the charge dissipates, the two plates of the capacitor will become uncharged and the cycle will begin again.

The use of Tantalum and Polymer materials in the construction of this type of capacitor provides an increased amount of energy storage, while also maintaining a low ESR. This helps to ensure reliable operation, even when exposed to varying temperatures and other environmental conditions. Additionally, the polymer material used in these capacitors also helps to reduce the risk of short circuiting by acting as a buffer layer between the two plates. This type of capacitor is highly suitable for use in a range of high-performance applications, providing both high capacitance and low voltage.