B41231A128M

Aluminum Electrolytic Capacitors

B41231A128M Application Field and Working Principle

Aluminum electrolytics are one of the most common types of capacitors used in electronic circuits, and the B41231A128M is one of the most commonly used aluminum electrolytics. The B41231A128M is a low-profile, radial-leaded, miniaturized, segmented polyester film capacitor with long life, excellent stability and low impedance. It performs extremely well in high frequency and pulse applications, making it highly suitable for many market sectors.

Application fields

The B41231A128M is suitable for a wide range of applications, including power supplies, TV/VCRs, lighting, audio equipment, and computing. It is also suitable for high speed and pulse applications such as radio communications knowledge, digital and analog circuit boards, medical applications, and automotive components. It is particularly useful in high power applications, due to its excellent stability and low ESR.

Working principle

In an aluminum electrolytic capacitor, a anode is formed on an aluminum foil which is then rolled into a cell and soaked in an electrolyte solution. A cathode is formed on a second piece of metal which is then placed between the aluminum foil and the electrolyte solution. Further layers can be added to produce multiple capacitances. When voltage is applied across the terminals of the capacitor, electrical current flows through the electrolyte to form a film on the anode which serves to insulate the two layers and create a capacitor. This film must be periodically \'reformed\' in order to maintain the capacitance.

The B41231A128M has a capacitance range of 47-220µF, a voltage rating of 6.3V-100V, and is available in a range of sizes and packages. It has an extended life of more than 5000 hrs at 105°C, and has low temperature and humidity characteristics, making it suitable for a wide range of applications.

Conclusion

The B41231A128M aluminum electrolytic capacitor is ideal for many different market sectors and applications. Its range of capacitances, voltage ratings, and extended life make it suitable for high speed, pulse, and high power applications. In addition, its low temperature and humidity characteristics make it suitable for many different environmental conditions.