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Aluminium Electrolytic Capacitors

Aluminium electrolytic capacitors, sometimes also referred to as electrolytic capacitors, or simply electrolytics, are components which store electrical energy and are composed of an aluminium foil as the main electrode, a separator made of paper or other dielectric material, and an electrolyte with a metallic oxide film formed on the surface of the aluminium foil. They are found in a variety of electronic circuits, from small portable electronic devices, to large radio communications systems, to sophisticated computers.

B41605A8208M008

The B41605A8208M008 is a numerical designation for an aluminium electrolytic capacitor. It is a Type II, mid-temperature range, screw terminal aluminium electrolytic capacitor with a capacitance of 2.0mF (0.008F) at 25°C and a voltage rating of 50V AC (63V DC). The capacitor bears the P02 marking, which indicates it is suitable for wave soldering. It is rated to operate between -25°C and +85°C and has an operating life of 5000 hours.

Application Field

This capacitor is designed for use in wide range of electronic circuits, from small portable electronic devices to larger, more sophisticated systems. Its voltage rating make it suitable for high frequency applications, and its thermal range make it suitable for use in a variety of temperature regimes. It is a low-cost aluminium electrolytic capacitor, allowing it to be used as a general starting point solution for a wide range of projects.

Working Principle

The working principle of a B41605A8208M008 is simple. It is essentially a dielectric in between two metal plates. That is, there is an aluminium foil as the main electrode, a separator made of paper or other dielectric material, and an electrolyte with a metallic oxide film. When voltage is applied across the plates of the capacitor, the surface of the foil becomes electrically charged, becoming an electrical conductor through the electrolyte. This phenomenon of charging is known as capacitance, and as capacitors are able to store energy, they can be used in a wide variety of electronic circuits.