B43252B6686M

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are a type of capacitor that utilizes electrolytic action to store electrical energy, characterized by their large capacitance and relatively small size. Aluminum electrolytic capacitors used to be used extensively in consumer electronics, but in recent years their popularity has waned due to their tendency to develop leakage currents and inefficient heat dissipation. They are still widely used in certain applications requiring a high capacitance value, such as DC power supplies and power management circuits.

B43252B6686M Application Field and Working Principle

The B43252B6686M is a type of Aluminum Electrolytic Capacitor, offering low impedance, good ripple current characteristics and high reliability. It is designed primarily for use in electronic ballast and DC/DC converter applications in the consumer & professional audio and lighting markets. The B43252B6686M has a rated capacitance of 2.2uF, a rated voltage of 350V, and an operating temperature range of -25°C to +85°C.

The working principle of an aluminum electrolytic capacitor is based on the same principle as other electrolytic capacitors. The capacitor consists of two metal plates (the electrodes) separated by a thin layer of electrolyte. When voltage is applied, the positive plate attracts the negative ions in the electrolyte (the electrons), forming an ionic electron layer (the capacitor dielectric). This layer acts as an electrical insulator, allowing electrons to flow between the plates and creating a charge on the electrodes.

As the voltage across the capacitor increases, the charge builds up, creating an electric field that increases along with the voltage. This electric field creates an attraction between the positive and negative ions in the electrolyte, which further increases the electric field until it reaches the breakdown voltage of the capacitor. Once the breakdown voltage is reached, the electric field across the capacitor becomes so strong that the dielectric begins to break down, allowing electrons to pass between the plates, effectively bypassing the insulating layer. This results in current flowing through the capacitor, and this current is known as the capacitor\'s leakage current.

The B43252B6686M is also a low-voltage application Aluminum Electrolytic Capacitor, with long lifecycles and a wide temperature range. Ideally suited for switching power supplies, it offers high capacitance, low equivalent series resistance (ESR), and low leakage current. Its features include excellent humidity resistance and noise reduction in lighting and audio applications. It is also RoHS and REACH Compliant, making it an ideal choice for power applications.

In conclusion, the B43252B6686M is an Aluminum Electrolytic Capacitor suitable for use in switching power supplies, lighting, audio, and other electronic ballast applications. Its low impedance, good ripple current characteristics, and wide temperature range make it an excellent choice for many applications. Finally, its RoHS and REACH Compliance help ensure that the component is safe and reliable for use in consumer products.

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