Aluminum Electrolytic Capacitors

The MAL202138109E3 is an aluminum electrolytic capacitor. It is a polarized device, meaning that the positive terminal must be connected to a voltage that is higher than the negative terminal. The capacitance of the device is 220 microfarads, and the working voltage range is 6.3 to 10 volts.

Application Fields

The MAL202138109E3 is primarily used in power supply filtering, because of its low impedance and high ripple current handling capabilities. This capacitor is also used extensively in the computer and electronics industry. It is often used in conjunction with power supplies, dc-dc converters, motor controllers, energy storage applications, and other applications requiring high performance and quality.

Working Principle

The working principle of aluminum electrolytic capacitor is based on Faraday’s law of electrolysis. This law states that when an electrical potential is applied across a charged capacitor, the resulting current is proportional to the applied voltage. Thus, when an electrical voltage is applied to an electrolytic capacitor, the charge stored on the plates will create an electric field and current. The current will flow through the electrolyte, resulting in an increase in the amount of charge stored on the plates

The device is comprised of two plates, the anode and the cathode, which are separated by an insulating layer. The anode is composed of an aluminum foil sheet coated with an anodized layer, while the cathode is composed of an oxidized paper sheet that is soaked in an electrolyte. When the potential is applied, the current that passes through the electrolyte causes oxidation-reduction reactions on the anode and cathode, which in turn results in the buildup of charge on the plates.

The aluminum electrolytic capacitor has many benefits. It is a low-cost, high-performance device that offers excellent thermal performance. It has a very low Equivalent Series Resistance (ESR), which leads to improved ripple current handling and better noise filtering. It is also highly reliable, with an expected life expectancy of up to 10,000 hours.