MAL218097203E3 Capacitors

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Aluminum-polymer capacitors are typically designed to replace traditional aluminum electrolytic and film capacitors for improved performance, miniaturization and reliability. One example of an aluminum-polymer capacitor is the MAL218097203E3. It is critical to understand the application field and working principle of this device in order to ensure proper operation in any application.

MAL218097203E3 Overview

The MAL218097203E3 is part of the Automotive Capacitor Series, which is designed to meet the demanding requirements of electronic systems in harsh environmental and electrical conditions. This series is ideal for use in temperature range and automotive power systems. The MAL218097203E3 is a radial leaded, aluminum-polymer capacitor that is rated for operation up to 105°C and has a rated voltage of 63 Vdc.

The MAL218097203E3 is an option for high-voltage applications where the working voltage exceeds 40 Vdc and offers the benefits of featuring a low equivalent series resistance (ESR), large capacitance, long life, and high ripple current. These capacitors also feature a snap-in mounting for easy installation, low minimum operating voltage and low parasitic resistance.

Application Field

The MAL218097203E3 is primarily used in automotive applications such as electronic control units, fuel injection systems, start/stop systems, transmission control units and automotive power systems. These are used to enable high-efficiency and reliable power supply operations. Its capacitance and rated voltage enable the device to withstand high ripple currents and tight voltage regulations, thus making it a good choice for these applications.

The MAL218097203E3 also has applications in other fields such as power supplies, UPS systems and electronic test instruments. However, these require larger capacitors with higher voltages and higher capacitance Because of its rating, the MAL218097203E3 is particularly well-suited for applications in the 40 to 80 Vdc range.

Working Principle

Aluminum-polymer capacitors are a type of electrolytic capacitor, meaning they store electrical energy in a chemical process called electrochemical capacitance. As electricity is applied to the capacitor, a polarized liquid electrolyte is attracted to the anode and forms a thin, conductive layer on the anode surface. This layer is called a “double layer” and acts as an insulating barrier between the anode and cathode, where a dielectric of plastic-based polymer is sandwiched between two metal layers.

The electrochemical capacitance of the polarized electrolyte creates an electrical field that stores electrical energy. This electrical energy is then released as the capacitor is discharged. These capacitors are often preferred for their use in high voltage applications, low ESR, and long life.

Conclusion

The MAL218097203E3 is a radial leaded, aluminum-polymer capacitor that offers the benefits of featuring a low equivalent series resistance (ESR), high capacitance, long life, and high ripple current. The device is commonly used in automotive applications, as well as power supplies, UPS systems, and electronic test instruments. Its working principle relies on electrochemical capacitance, whereby electrical energy is stored in a polarized liquid electrolyte and released as the capacitor is discharged.

Given its application field and working principle, the MAL218097203E3 is a good option for high-voltage applications that require low ESR and long life. It is important to understand the right applications and working principle of the device to ensure proper operation for any given application.

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