ELXM251VSN471MP50S

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are one of the most versatile and widely used capacitors in the electronics industry. They are used in many applications, from high-frequency RF power supplies to low-frequency power rectification. In addition to their versatility, aluminum electrolytic capacitors also offer several unique advantages, including low cost, high operating temperature range, long life, and low self-discharge rate.

The ELXM251VSN471MP50S is a surface-mount aluminum electrolytic capacitor manufactured to a high standard by leading capacitor manufacturer TDK. It has a wide operating temperature range (85°C to 105°C) and an extremely low self-discharge rate. The unit is compatible with traditional wave soldering and reflow soldering techniques. It features high capacitance and low equivalent series resistance (ESR).

Application field of ELXM251VSN471MP50S

The ELXM251VSN471MP50S is suitable for use in high frequency power supplies, buck/boost converters, switching power supplies, Class D amplifiers, DC brushless motor drives, and other applications requiring a capacitor with high capacitance and low ESR. This capacitor is compatible with all TDK\'s Al-based high-performance capacitors, allowing for implementation of highly efficient, high power, noise-free solutions for high-end applications.

Working Principle

The ELXM251VSN471MP50S operates according to a principle known as lever rule. This exploits the quantum mechanical tunneling effect and the electrostatic attraction between two material states. The two states are separated by an oxide layer that lies between them. This oxide layer is an electrostatic barrier that prevents electrons from tunneling from one layer to the other. When a voltage is applied to the capacitor, charges of the opposite polarity (electrons and holes) move in opposite directions and create an electric field, which charges the capacitor.

The main advantage of this type of capacitor is that it is extremely resistant to noise and a variety of environmental disturbances, making it suitable for various types of high-frequency applications. Additionally, the lever rule structure helps to reduce the cost of the capacitor compared to traditional aluminum electrolytic capacitors due to the absence of an expensive aluminum canister and other packaging components.

The ELXM251VSN471MP50S can also be used in automotive applications, including as an audio filter, for filtering out higher frequencies from vehicle audio or for noise suppression during engine start-up. Additionally, it can be used as a voltage regulator in vehicle electronics, improving power efficiency and reducing the need for additional components.