ESRD8R2M08B

Aluminum - Polymer Capacitors

The ESRD8R2M08B is an Aluminum-Polymer capacitor from Murata, specifically designed for use in converters and switching adapters. It features a maximum rated operating temperature of 85°C and can provide a high rated ripple current capability of 5.4A. This makes it a popular choice for applications where high capacitance, low ESR and high ripple current capabilities are required.

Application Field

Aluminum - polymer capacitors like the ESRD8R2M08B are suited for applications where high capacitance, low ESR and high ripple current capabilities are required. This includes power supplies, intermediate bus converters, solar power systems and switch mode power supplies. It also finds applications in various industries such as industrial, automotive, and medical.

Working Principle

Aluminum - polymer capacitors work on the principle of electrical double layer capacitance (EDLC). When a voltage is applied across two electrodes separated by a dielectric material, an electrical double layer is formed. This double layer acts like a capacitor, allowing the electrolyte to store electric charge. The main difference between aluminum-polymer capacitors and other types of capacitors is their dielectric material, which is composed of a blend of aluminum and polymer particles.

The aluminum provides the capacitance, while the polymer particles act as a permanent electric insulator. This combination of materials results in a low ESR (equivalent series resistance) and high ripple current capabilities. It also makes aluminum-polymer capacitors highly reliable, since they are less prone to leakage and resist mechanical stress better than other types of capacitors.

Advantages and Disadvantages

Aluminum-polymer capacitors offer several advantages compared to other types of capacitors, such as a low ESR and higher ripple current capabilities. They are also easier to control and very reliable in performance. However, they are also more expensive than some other types of capacitors, such as aluminum electrolytic and ceramic capacitors. Additionally, they also have shorter life spans than some other types of capacitors.

Conclusion

The ESRD8R2M08B is a type of aluminum-polymer capacitor, specifically designed for use in converters and switching adapters. It offers several advantages compared to other types of capacitors, such as low ESR and higher ripple current capabilities. However, it is also more expensive than some other types and has a shorter lifespan. Still, its reliability and performance make it a popular choice for a wide range of applications.