EEF-ST0E271R Capacitors

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Aluminum - Polymer Capacitors have been around for quite some time, providing a viable alternative to regular electrolytic capacitors. However, they have recently become even more popular due to their increased energy density, better stability and long-term reliability. The EEF-ST0E271R is one such example of this technology.

The EEF-ST0E271R is a polymer aluminum electrolytic capacitor that uses a polyethylene naformal-ethylene oxide film insert between the anode and cathode plates. This provides a very thin insulating layer which helps keep leakage current to a minimum and makes these parts ideal for applications that require high capacitance with minimal self-discharge.

The EEF-ST0E271R comes in two different package variations. The standard version has an 18.6 by 12.2 mm footprint, while the smaller version has a footprint of only 9.5 by 6.8 mm. Both versions are resistant to thermal shock and corrosion and are rated for a temperature range of -55C to +125C.

When it comes to applications, the EEF-ST0E271R is capable of handling high ripple current ratings and features a high-temperature performance rating up to 125C. For example, if used in a computer power supply, it can handle up to 850mV of ripple current without degrading, making it ideal for high accuracy power supplies. In addition, due to its high efficiency, the EEF-ST0E271R is well suited for stand-by power, particularly in mobile devices where power dissipation is critical.

In terms of working principle, the EEF-ST0E271R uses a semi-conductive polymer to micropartion charge between the anode and the cathode. This polymer acts as an electronic insulator and selectively allows charge to flow through it. As a consequence, the charge carrier mobility is greatly improved and this ultimately results in higher capacitance and better stability, even at high temperatures.

In conclusion, the EEF-ST0E271R is a cost-effective, yet reliable solution for applications where high ripple currents and high current ratings are required. It features a robust construction and is compliant with military and space standards. Furthermore, its good thermal shock resistance and high-temperature performance make it suitable for demanding environments such as automotive and aerospace applications.

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