ELXM251VSN271MP35S

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Aluminum electrolytic capacitors are polarized electrolytic capacitors whose anode electrode is made of a pure aluminum foil with an etched surface. A porous film of insoluble electrolyte covers the etched surface. The cathode electrode is a metallic layer of oxide that forms on the surfaces of the aluminum when the electrolyte is wet. The oxide layer provides the good electrical properties and also serves as the barrier to prevent dissolved corrosion products from migrating to the aluminum surface. The electrodes and the dielectric layers are laminated with aluminum foil and laminated between two high-density polyethylene. ELXM251VSN271MP35S capacitors fall in the family of aluminum electrolytic capacitors.

ELXM251VSN271MP35S capacitors are surface-mounting capacitors offering a functioning temperature range of -55 to 125 degrees Celsius and a long-term reliability of 1000 hours. These capacitors utilize a sintered-polyethylene dielectric and have four-terminal leads. The ELXM251VSN271MP35S capacitors have a design efficiency of 93 percent, which makes them suitable in high-power applications. These capacitors have a capacitance of 100uF, a rated voltage of 250V and a rated current of 2.7A. The maximum allowable ripple current is 160mArms at 25 degrees Celsius and 250kHz.

The ELXM251VSN271MP35S capacitors are designed for high-frequency, high-power applications such as switching power supplies and switch-mode converters, as well as for power and audio amplifiers, filters and active circuits. They are used in low impedance power supply applications requiring low inductance designs for high-frequency signals. They are also used in switching power supplies, line-frequency power supplies, and high-resolution digital camera designs.

The working principle of aluminum electrolytic capacitors relies on the aluminum oxide layer formed on the aluminum anode during the manufacturing process. This layer acts as a dielectric that provides insulation between the anode and the electrolyte. When a dc voltage is applied to the terminals of the capacitor, the dielectric layer becomes charged and stores electrical energy. When the applied voltage is above the rated value of the capacitor, the electric field strength increases within the dielectric layer, causing it to break down and allowing electric current to pass through it.

At the same time, the electrolyte reacts with the aluminum anode, forming a polarized oxide layer. This layer stores the charge and increases the capacitance of the capacitor. As the amount of charge stored by this layer increases, the capacitor becomes more and more charged. When the applied voltage is removed, the charge stored in the polarized oxide layer is slowly released back into the electrolyte. This process is repeated each time a voltage is applied to the capacitor, providing it with a long-term stability and reliability.

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