SLP681M400H4P3

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Aluminum Electrolytic Capacitors - SLP681M400H4P3 application field and working principle

The SLP681M400H4P3 is an Aluminum Electrolytic Capacitor designed specifically for use in electric and electronic devices such as laptops, desktops, smartphones, and other consumer electronic devices that require the use of capacitors in their circuitry.

Application Fields

The SLP681M400H4P3 is suitable for applications including, but not limited to, the following:

• Active power factor correction (PFC)
• DC-AC power inverters
• DC motor speed control
• AC motor speed control
• AC line-filtering
• DC power supplies
• Switching power supplies
• Laptop and desktop computer power supplies
• Smartphone and tablet power supplies
• Automotive and industrial electrical/electronic systems

The SLP681M400H4P3 is designed not only for its high-frequency performance, but also for its high temperature and humidity resistance, allowing it to operate reliably even in harsh environments.

Working Principle

An aluminum electrolytic capacitor consists of two thin aluminum metal plates separated by a paper spacer or plastic film. The two layers are the anode and the cathode. The two layers are soaked in electrolyte and rolled up into a cylinder. A dielectric oxide layer is formed on the anode surface due to an electrolytic reaction between the electrolyte and the metal surface of the anode. The dielectric layer acts as an insulator between the anode and the cathode, essentially creating a capacitor.

Unlike regular capacitors, the dielectric oxide layer of an aluminum capacitor can store more electric charge due to its higher dielectric strength. This higher electric charge allows the capacitor to respond faster to changing electrical signals, making it ideal for applications like power factor correction and motor speed control that require rapid and accurate responses.

The SLP681M400H4P3 aluminum electrolytic capacitor has a wide operating temperature range of -40°C to 105°C. It also has a very low ESR of 0.03 ohms and high ESL of 0.48µH, making it ideal for high-frequency applications.

Conclusion

The SLP681M400H4P3 is an Aluminum Electrolytic Capacitor designed for high-frequency power and industrial applications. It is characterized by a wide operating temperature range, low ESR, and high ESL, making it ideal for use in power factor correction, DC motor speed control, AC motor speed control, AC line-filtering, DC power supplies, switching power supplies, laptop and desktop computer power supplies, smartphone and tablet power supplies, and automotive and industrial electrical/electronic systems.

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