Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are one of the most widely used types of capacitors. This type of capacitor is commonly used in electronic equipment and goes by various names, such as electrolytic capacitor, polarized capacitor, or wet capacitor. Aluminum electrolytic capacitors can range in capacitance from a few picofarads to over one farad.

The UPW2W220MHH is a type of aluminum electrolytic capacitor. This capacitor is used for low voltage applications, such as power supplies, line filters, and DC link capacitors.

Application Field

The UPW2W220MHH capacitor can be used in a wide range of applications. It is suitable for high frequency signal and power line applications. The capacitor is well-suited for high current or pulse current applications, because it has a high ripple current. The low ESR and ESL makes the capacitor suitable for high frequency applications.

The capacitor is also suitable for power semiconductor devices such as diodes, thyristors, and transistors.The capacitor can be used in lawn mowers, refrigerators, amplifier and welding transformer power supplies, and air conditioning compressors. It can also be used in photovoltaic power systems, uninterruptible power supplies, and motor control systems.

Working Principle

Aluminum electrolytic capacitors are constructed of aluminum foil electrodes and a dielectric layer made of an anodized aluminum oxide. This basic design makes them polarized, meaning that they have a positive terminal and a negative terminal, depending on the type of electrolyte used. The dielectric layer is very thin, allowing for large capacitances.

The advantage of aluminum electrolytic capacitors is their ability to handle high current applications. They are also ideal for high voltage applications and have a low equivalent series resistance (ESR) and equivalent series inductance (ESL). This means they can handle high frequency applications better than many other types of capacitors.