EKMH630VSN392MQ45T

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (commonly called \'electrolytics\') are capacitors whose anode is made of a metallic aluminum foil with an etched surface to increase the surface area. The layer of oxide across this foil acts as the dielectric of the capacitor. Further layers of conductive liquid, usually an electrolyte solution, and paper may also be included. Aluminum electrolytic capacitors offer a large capacitance values in a small size and are widely used in a variety of applications. The EKMH630VSN392MQ45T aluminum electrolytic capacitor is a multi-layer aluminum electrolytic capacitor with an extended temperature range (-40 to +105 °C). It is equipped with a PC-S (Solder) terminal for soldering and has a dissipation of 4.5 watts.

EKMH630VSN392MQ45T Application Field

EKMH630VSN392MQ45T is a multi-layer aluminum electrolytic capacitor and it is mainly used in AC/DC power factor correction, low frequency lighting inverters, switching power supplies, high frequency lighting, motor drive systems, LED lighting, etc. These capacitors have a wide capacity range, good ripple current capacity, and an extended temperature range(-40 to +105 °C). Due to its small size, it is also suitable for small portable electronic devices.

Working Principle of EKMH630VSN392MQ45T

This aluminum electrolytic capacitor works on the same principle as other electrolytic capacitors. The anode is made up of an aluminum foil etched with microscopic holes to increase its surface area. The oxide layer across this aluminum acts as the dielectric. This dielectric separates the anode from the cathode. The cathode is made up of a highly conductive liquid, usually an electrolyte solution that is coated onto the anode foil.

The electric charge stored in the capacitor is determined by the thickness of the dielectric layer. As temperature increases, the thickness of the oxide layer decreases reducing the capacitance. To counter this effect, EKMH630VSN392MQ45T is wired as a multi-layer capacitor with an additional layer between the anode oxide layer and the cathode electrolyte solution. This layer consists of a conductive paper that acts as a shield and maintains capacitance even at high temperatures.

The EKMH630VSN392MQ45T is capable of dissipating up to 4.5 watts of power due to its extended temperature range and its ability to withstand higher power levels. Its high ripple current capabilities make it suitable for switching power supply applications.

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