476SML004M Datasheet/PDFAluminum electrolytic capacitors are polarized capacitors whose anode is made out of pure aluminum. It consists of a solid aluminum anode, with an etched surface, covered with an oxide layer that acts as a dielectric. The anode terminates with a tab or lead and the oxide layer is separated from the cathode plate, normally a foil or paper, with a very thin electrolyte layer. The cathode foil often has a rough or spongy surface that greatly increases the total surface area of the capacitor. The increased surface area is beneficial as this increases the capacity of the device.
476SML004M is an extended temperature range, radial leaded, surface mount, aluminum electrolytic capacitor. These are used in a wide range of applications, in both high and low frequency applications. The 476SML004M has made great advances in capacitor construction and design. Some of the features that make the device stand out include its low ESR values, high thermal stability, and excellent capacitance retention over temperature and voltage variations.
The working principle of the 476SML004M is predominantly based on the electrochemical properties of aluminum and its oxide layer. When voltage is applied across an aluminum oxide layer (the dielectric), electrons are freely shared, forming a current. As the current continues to travel through the aluminum and its oxide layer, it produces a charge that is stored on the surface of the capacitor. The current produced by the electrons moving between the Aluminum and the oxide layer is what handles the storage of energy.
The 476SML004M is widely used in many applications, such as medical equipment, power supplies, switches, and converters. It is also used in motor control, audio systems, and power protection devices. It is particularly preferred for high frequency applications because of its extremely low ESR values. The 476SML004M has excellent thermal stability and capacitance retention over wide temperature and voltage variations, making it very suitable for high power applications.
In summary, the 476SML004M is an advanced aluminum electrolytic capacitor that offers great features such as its extremely low ESR values, high thermal stability, and excellent capacitance retention over wide temperature and voltage variations. These features make the 476SML004M ideal for high frequency and high power applications.