604D551G040GJ7

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are electrochemical capacitors with aluminum oxide as the dielectric. They have two plates, one consisting of pure aluminum, the other consisting of a porous paper closest to the cathode, and subsequently the anode. The porous paper is impregnated with electrolyte, is then placed in contact with the metal oxide film. The main advantage of this capacitor type is its large capacitance in a relatively small package.

604D551G040GJ7 Application Field and Working Principle

604D551G040GJ7 is an aluminum electrolytic capacitor with 0.4uF of capacitance and rated voltage of 160V. It is offered in a ‘D’ series package, which is a radial leaded aluminum electrolytic capacitor. The dimensions of this package are 9.4mm D × 20mm L.

604D551G040GJ7 is an ideal choice for use in various motor control and switching power supplies, as well as damping circuits or wherever a large capacitance value is needed. The aluminum electrolytic capacitor also has a promise of high stability in temperature and humid environments.

In terms of working principle, the anode of the capacitor consists of a very thin aluminum oxide layer, which is formed naturally on the surface of the aluminum foil. This oxide layer provides the dielectric for the capacitor. Between the anode and the aluminum oxide layer is a solution of electrolyte to maintain the charge balance and to provide the necessary electrical conductivity. The cathode of the capacitor is composed of a porous paper impregnated with the same electrolyte. When a voltage is applied to the capactior, the charge will be stored in the aluminum oxide layer.

It can be seen from the above that aluminum electrolytic capacitors are fairly robust and are capable of withstanding a wide variety of temperature and humidity ranges. This type of capacitor can handle high currents and has great power handling capability. The construction is also fairly simple, and the solid state technology ensures reliability and long-term operability. This makes the aluminum electrolytic capacitor a great choice for numerous applications.

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