T540B157M003CH87107280

Tantalum - Polymer Capacitors

Tantalum – Polymer Capacitors, such as the T540B157M003CH87107280, are used in a variety of commercial and industrial applications. The main advantages of polymer capacitors over conventional types is that they offer high capacitance values, low equivalent series resistance (ESR), and low electrical leakage. The capacitance of these capacitors ranges from tens of microfarads to tens of farads. The most common applications for Tantalum – Polymer Capacitors include power supplies, laptop power circuitry and cell phone circuitry.

Application Field

Tantalum – Polymer Capacitors are suitable for use in high frequency, high power electronics. Common applications include decoupling, energy storage, and DC-DC converter applications. In power supplies, Tantalum – Polymer Capacitors are used to temporarily store energy and reduce noise and ripple in the power supply output. They are also used in a variety of audio/video and digital circuits, as well as in high-end audio equipment such as amplifiers. Tantalum – Polymer Capacitors are suitable for use in military applications and temperature-critical applications.

Working Principle

Tantalum – Polymer Capacitors have an electrode material made of solid-state electrochemical materials, which have a large aqueous surface containing a conductive polymer coating. The polymer coating forms a dielectric layer between the electrolytic material and the electrolyte, which adsorbs the electrolyte and acts as a barrier against electrical leakage. The electrolytic material is mostly tantalum, which has a high electrical capacitance. The Tantalum – Polymer Capacitors are typically wound together with a adhesive tape and a film of insulating material. The electrical current is delivered through a lead that is connected to both the positive and the negative terminals.

In operation, when a voltage is applied, the electrolytic material is polarized, which increases the electrical capacitance of the capacitor. This capacitance is then used to store electrical energy. When the capacitor is discharged, the electrolyte is discharged, allowing the stored energy to be released into the circuit. Since the dielectric material acts as an insulator, it will prevent the circuit from becoming overloaded when the capacitor is discharged.

Advantages of Polymer Capacitors

Tantalum – Polymer Capacitors are widely used in a variety of electronics and commercial applications due to their high capacitance values and low ESR. There are several advantages associated with using polymer capacitors over other types:

• Low profile – The thickness of polymer capacitors is only 0.6mm, while other comparable capacitors can be up to 1.5mm thick.
• Low ESR – The ESR of polymer capacitors is very low (up to 0.0001 ohms), which means that they can handle high current applications.
• High tolerance – The tolerances of polymer capacitors are much higher than conventional capacitors, which allows for greater accuracy in design.
• High temperature resistance – The dielectric oxide layer of polymer capacitors can operate in temperatures up to 125°C.
• High reliability – Due to the low ESR, the capacitance of polymer capacitors will remain constant even with changes in temperature.

Conclusion

Tantalum – Polymer Capacitors such as the T540B157M003CH87107280 are widely used in a variety of applications. They offer high capacitance values, low equivalent series resistance (ESR), and low electrical leakage. They are suitable for use in high frequency, high power electronics, and are reliable, temperature resistant and highly tolerant. Tantalum – Polymer Capacitors are a great solution for applications requiring a small footprint, high capacitance and low ESR.