500D687M040EF2A

Aluminum electrolytic capacitors are energy storage components that convert electrical energy into electrical energy through the principle of electrolysis. The meaning of the cryptic part number 500D687M040EF2A on such a capacitor tells us the characteristics of the component, such as its body size, voltage rating, capacitance, and maximum temperature rating. It is widely used in power electronics, including consumer electronics, broadband communications, computers, high-performance automotive, and industrial applications.

An electrolytic capacitor is a polarized capacitor that utilizes an electrolyte called an electrolyte, usually a liquid or paste, to achieve a larger capacitance than is possible with conventional aluminum capacitors. The electrolyte component helps to increase dielectric strength This electrolyte also allows the capacitor to achieve a very large capacitance in a much smaller size than with other types of capacitors. Aluminum electrolytic capacitors offer a range of capabilities due to the increased size, allowing for higher voltage, higher frequency, and higher capacitance applications than possible with other types of capacitors.

The 500D687M040EF2A aluminum electrolytic capacitor has a capacitance of 40,000 microfarads and a maximum voltage of 6.87 volts. Its body is sized at 500D, which is a standard notation for 5mm in diameter and 15mm in height. The body of the cap has no significant effect on its performance or dielectric strength, but it does impact ease of installation. Most caps of this size are typically used for decoupling or bypassing, as their relatively small size and higher capacitance per physical size allows them to fit in tighter spaces with slightly higher capacitance.

The working principle of an aluminum electrolytic capacitor is similar to that of a conventional electroplated capacitor, though the electrolyte performs a dual role. At the anode side, aluminum oxide is formed on the aluminum surface, forming a dielectric layer from which electrons can be extracted easily and without applying a higher voltage than the rated voltage of the capacitor . In the cathode side, the electrolyte allows electrons to flow from the metal surface to form an electrical current. This current allows the capacitor to store energy.

Aluminum electrolytic capacitors are especially useful in high frequency digital circuitry, where other types of capacitors would be inadequate. Their small footprint, high energy storage capacity, long life, and robust construction make them ideal for many applications, such as power electronics, telecommunications, computers, medical devices, and consumer electronics.

The 500D687M040EF2A aluminum electrolytic capacitor, in particular, is an excellent choice for applications that require a combination of high voltage, high capacitance, and a small physical size. Its relatively low ESR and ESL allows it to handle high-frequency switching of high-current signals, while its maximum temperature rating of 105°C ensures that it can tolerate demanding environmental conditions.

In conclusion, the 500D687M040EF2A aluminum electrolytic capacitor is an important component for a variety of applications, such as power electronics, telecommunications, computers, medical devices, and consumer electronics. Its small size, high capacitance, and long life make it an ideal choice for demanding applications that require high voltage, high capacitance, and a small physical size.