EEH-ZK1E471P Datasheet/PDFAluminum - Polymer Capacitors
Aluminum-polymer capacitors, or Al-polys, are a type of capacitor that use a metalized polymer film as the dielectric. This type of capacitor offers several advantages over traditional tantalum and ceramic capacitors, including longer life, lower leakage current, and a wider range of temperature and voltage ratings. They are often used in high-density applications in telecom, power-management, and automotive systems due to their smaller size and high capacitance.
The EEH-ZK1E471P is an example of aluminum - polymer capacitors. It is an SMD, or surface-mounted device, with a maximum capacitance of 470µF and a rated voltage of 10V. It has a maximum operating temperature of 105°C and is designed for general-purpose use.
Application Fields
Aluminum-Polymer capacitors are used in a wide variety of applications, ranging from audio and consumer electronics to power-management, automotive, and medical devices. Their low ESR (equivalent series resistance) and long life make them ideal for switching power supplies and power management applications. They are also used in consumer electronics such as flat panel TVs, SMPS (switch-mode power supplies), and computer motherboards for decoupling around ICs (integrated circuits).
Working Principle
The working principle of Aluminum-Polymer capacitors is based on the electrostatic storage of energy. This is the same principle used in standard aluminum electrolytic capacitors, but the Al-poly capacitors use a metalized polymer film as their dielectric instead of conventional electrolytes. The result is a capacitor with higher capacitance for a given size as well as longer life and lower leakage current.
The EEH-ZK1E471P works like any other aluminum-polymer capacitor. The electrolyte is replaced with a metalized polymer film as the dielectric, and the electrodes are aluminum foils, which are sandwiched between the dielectric and a conductive polymer. When an electric field is applied across the capacitor, the electrons stored in the metalized film are attracted to one of the electrode and electrons are repelled from the other, creating a net potential difference.
Conclusion
The EEH-ZK1E471P is an aluminum-polymer capacitor designed for general-purpose use. It has a wide range of applications and can be used in audio and consumer electronics, switch-mode power supplies, power management, and automotive systems. It offers advantages over standard tantalum and ceramic capacitors such as longer life, lower leakage current, and a wider range of temperature and voltage ratings.