MAL218097404E3

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Aluminum-polymer capacitors, such as the MAL218097404E3, offer numerous advantages over traditional aluminum electrolytic capacitors.

These capacitors have a very low Equivalent Series Resistance (ESR) combined with a high energy density. This makes them ideal for both pulse power supplies and high frequency applications. Also, because they are non-polarized, they can also be used in unipolar applications.

Most important of all, the aluminum-polymer capacitors have a much longer lifetime than traditional aluminum electrolytic capacitors, a key factor when considering a power supply. This is because they have a much lower leakage current. Additionally, they have a greater flexibility which broadens their applicability.

In terms of the MAL218097404E3 in particular, the capacitor has a rated voltage of 63V, an equivalent capacitance of 10,000µF and an operating temperature range of -55°C to +105°C. Its leakage current is 0.4uA under normal operating conditions and its working frequency is 1kHz. All these features make it suitable for high-power application where stable voltage is required.

The working principle of aluminum-polymer capacitors is relatively simple. Unlike with standard aluminum electrolytic capacitors where the anode is usually metallic aluminum and the electrolyte is usually a liquid, these capacitors have a dielectric membrane separating the anode and cathode. The dielectric membrane is a polymer material, hence the name. As such, there is no need for an electrolyte.

In addition, the anode is made of a conductive particle, such as conductive graphite, carbon nanotubes and titanium dioxide. This type of material is left on the anode to provide more area and hence more charge. As such, it is able to store more electrical energy than standard aluminum electrolytic capacitors.

Thus, when the two surfaces of the capacitor are charged with opposite electrical charges, with the anode current going in one direction and the cathode current going in the opposite direction, resulting in an electrostatic field. This field causes electrons to move from one side of the membrane to the other, resulting in current flow.

Therefore, these capacitors are able to retain the charge for long periods of time, making them suitable for both DC and AC applications. Furthermore, since there is no liquid electrolyte, these capacitors are also more robust and can withstand higher temperatures and more stress than standard aluminum electrolytic capacitors.

In conclusion, the MAL218097404E3 is an ideal capacitor for a variety of applications including high-power supplies and high-frequency operations. Its low ESR, high energy density and long lifetime make it suitable for a vast number of applications. Also, its working principle of having a dielectric membrane between the anode and cathode make it robust and durable.

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