Aluminum Electrolytic Capacitors

ALS70A114KF040 Application Field and Working Principle

An aluminum electrolytic capacitor or “aluminum elcap” is an electronic component that utilizes the physical properties of an electrolyte between two aluminum foils as part of its construction. It is a polarized capacitor, meaning the anode and cathode must be placed with the correct orientation for the capacitor to function properly. Aluminum electrolytic capacitors are divided into three main categories: wet, dry, and sealed. The ALS70A114KF040 belongs to the sealed category.

Application Field

Aluminum electrolytic capacitors are widely used in a variety of electronic devices. With their high capacitance-voltage (CV) ratings, they can store a significant amount of electrical charge, and they are frequently used in power supply circuits and on-off switching circuits. The ALS70A114KF040, in particular, is a suitable choice for electronic devices that require a low ripple current, like power supplies and medical meters. It is also suitable for digital and audio equipment, controllers, LED, and other electrical components.

Working Principle

The aluminum electrolytic capacitor is constructed from two aluminum foils, divide by an electrical insulator, called a dielectric. The dielectric may be made of paper, mica, or plastic film. At this point, it is still just a capacitor but without any effective capacitance. To increase the capacitance, an electrolyte is added to the capacitor, filling the pores in the insulator. The electrolyte is an acidic solution that helps to form an electrical bridge between the two aluminum foils. The polarization of the electrolyte also helps to increase the capacitor\'s capacitance when a voltage is applied to the plates. This is because the electrolyte causes the positive and negative ions to be attracted to the aluminum plates, thus increasing the capacitance.

The ALS70A114KF040 has a long life and can be used for up to 10,000 hours of continuous operation in most cases. As it belongs to the sealed type, it doesn\'t require maintenance over the course of its lifetime. This also makes it a preferred choice when it comes to safety and reliability.

In conclusion, the ALS70A114KF040 aluminum electrolytic capacitor is a reliable and safe electronic component that offers high capacitance and low ripple current, making it suitable for use with a variety of electrical and digital devices. It is widely used in power supply circuits, on-off switching circuits, and medical meters. The working principle of this capacitor is based on the physical properties of an electrolyte and the polarization of the electrolyte which helps to increase its capacitance.