EMVH250GDA681MMH0S

Aluminum electrolytic capacitors are key components in a wide range of electronic applications due to their ability to store charge or energy and to provide electrical energy or current in the form of a voltage. The EMVH250GDA681MMH0S is an aluminum electrolytic capacitor with a capacitance of 680-820 μF and a rated voltage of 13.0-18.0VDC.

Capacitance

The capacitance of the EMVH250GDA681MMH0S is 680-820 μF and rated voltage of 13.0-18.0VDC, with an electrolyte of 105°C and a load life of 2000-2500 hours. Capacitance is usually shown as the amount of charge stored in a capacitor, measured in Farads (f). The higher the capacitance, the more charge can be stored, which increases the capacitance’s ability to deliver a large amount of current.

Background

Aluminum electrolytic capacitors are constructed from four aluminum electrodes and a dielectric electrolyte. A very thin aluminum oxide film is formed on the aluminum electrodes which acts as an insulating layer against the electrolyte. When a voltage is applied, the layer of aluminum oxide transforms from a highly insulating dielectric to a conductive material that stores a charge.

Applications

Aluminum electrolytic capacitors have a wide variety of applications, from powering electric motors to providing filtering on AC power circuits. The EMVH250GDA681MMH0S is a general purpose capacitor that can be used for decoupling, filtering, and bypass applications in a wide range of applications. Some of the common applications include:

• Switching power supplies
• Industrial control systems
• Consumer electronics
• Automotive electronics
• Inverters and converters

Working Principle

When voltage is applied to the aluminum oxide layer, it acts as an insulator and prevents current from passing through. However, when a certain voltage threshold is met, the aluminum oxide film breaks down, allowing current to flow through the capacitor. This breakdown of the aluminum oxide is known as reverse bias electromigration, and it is the principle that enables the capacitor to store energy. When the voltage is removed, the aluminum oxide layer reforms, preventing current from flowing and allowing the capacitor to return to its insulation state.

Conclusion

The EMVH250GDA681MMH0S is an aluminum electrolytic capacitor with a capacitance of 680-820 μF and a rated voltage of 13.0-18.0VDC. It is used for a wide variety of applications, such as decoupling, filtering, and bypass applications. The working principle behind the capacitor is reverse bias electromigration, which allows it to store energy and provide electrical energy or current in the form of a voltage.