T540D337K2R5DH8705WAFL

Tantalum - Polymer Capacitors

The T540D337K2R5DH8705WAFL is a type of tantalum - polymer capacitor. Also known as a Ta-Poly capacitor, this type of high-technology capacitor is often used in a variety of circuits and electronics devices.

Application Field

The T540D337K2R5DH8705WAFL has many applications and is widely used for the voltage filtering of supervisory circuits and for holding digital logic levels in microprocessor-based systems. It is also ideal for filtering high-frequency noise associated with digital logic. The impressive voltage rating and temperature coefficient of the T540D337K2R5DH8705WAFL makes it especially ideal for applications which require a reliable source of power.

The T540D337K2R5DH8705WAFL is also useful in bypassing in power supply decoupling, which is the process of using a capacitor or two between the load and the power supply to transfer electrical current and eliminate any high-frequency voltage drops at the load. It can also be used in the input and output stages of an amplifier or radio transmitter, as it is a high-frequency capacitor which can help to avoid unwanted electrical transients.

Working Principle

Tantalum-Polymer capacitors are based on a solid polymer electrolyte and two electrodes consisting of powdered tantalum. The metal forms a manganese dioxide (MnO2) layer which acts as a dielectric. During construction, a voltage is applied between the metallic electrodes to polarize the metal dielectric so that it stores energy.

When the capacitor is incorporated into a device, an electrical charge from the power source accumulates on the capacitor’s plates. As a result, a field is created between the plates and an electrostatic energy (in the form of a voltage) is stored within the capacitor. This voltage is then able to discharge whenever necessary.

The main benefit of the Ta-Poly capacitor is that is has a low equivalent series resistance (ESR). This means that the capacitor is able to store and release electrical energy extremely efficiently, making it highly suitable for modern-day electronics.