ELG157M400AQ3AA

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Aluminium electrolytic capacitors are passive components consisting of two conductive plates separated by a dielectric material. The ELG157M400AQ3AA is one such capacitor, used in a variety of applications to serve as energy-storing devices. The ELG157M400AQ3AA is a radial leaded type capacitor, meaning it has two wires which protrude from the side rather than the top for more convenient connection.

The ELG157M400AQ3AA has a capacitance of 4700uF, a voltage rating of 400V, a temperature coefficient of 20ppm/deg C, and an operating temperature range of -40 Celsius (C) to +105 Celsius. The device has a case size of 22 x 30 and a lead length of 11.8 mm.

The ELG157M400AQ3AA can be used in multiple circuit designs, given its high ripple current tolerances, stability over temperature and input voltage, long life and low equivalent series resistance (ESR). For example, it is a popular choice for low pass filters, energy storage and power conversion circuits, snubber capacitors, electronic ballasts and camera flash units, automotive electronic applications, and fan motors.

The ELG157M400AQ3AA is a polarized capacitor, meaning the components on each side of the device have different electrical characteristics. One is a positive terminal, the other is a negative terminal. This device is an electrolytic capacitor, which means it uses a chemical process to build up an insulating layer on one side. The electrolyte absorbs the electrostatic charge, leaving a thin insulating layer on one side which acts as the dielectric.

The working principle behind the ELG157M400AQ3AA is relatively straightforward. When a voltage supply is applied, the electrolyte on one side of the capacitor will break down, releasing free ions. These free ions will then attract ions from the other side of the capacitor, creating an electric field which will induce a current flow. This current flow is known as a capacitance current. This current will remain until the supply voltage is removed and the charged ions recombine.

In summary, the ELG157M400AQ3AA is an aluminium electrolytic capacitor designed for use in a variety of circuit designs. It has high ripple current tolerances, stability over temperature and input voltage, a long life and low equivalent series resistance. The device is polarized and uses a chemical process to build up a thin insulating layer on one side, which acts as the dielectric. Its working principle is that of a capacitance current, which will remain until the supply voltage is removed.

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