397LMX400M2DG

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Aluminum Electrolytic Capacitors are widely used in power electronics, consumer electronics, industrial applications and instrumentation. The most common capacitors in this category are polarized capacitors, which have a greater capacitance-voltage-energy discharge rating than other capacitors of the same size. The 397LMX400M2DG Aluminum Electrolytic Capacitor is one such capacitor with specific applications and working principles.

The 397LMX400M2DG is a miniature polar capacitor with a housing size of 7.3mm x 12.5mm, making it well-suited for use in a variety of applications where space is a major limitation, such as portable devices, satellite stations and automotive electronics. It is composed of a non-solid square aluminum electrolyte wound in layers with the non-solid electrolyte connected to the two terminals by metalized aluminum foil or other conductive materials.

The 397LMX400M2DG has a capacitance-voltage-energy rating of 2,000μF at 20V and is rated for operation in temperatures up to 105°C. The capacitor operates at rated voltage and permits ripple current at operation temperature up to a frequency of 123,000Hz. This makes it suitable for applications like power supply decoupling, filtering, and buffering.

The working principle of the 397LMX400M2DG is based on the physics of electrolysis. When connected to a DC voltage, the electrolyte acts as an electrolyte. That is, it has both a positively charged electrolyte cation and a negatively charged electrolyte anion. The electrolyte migrates from the negative electrode to the positive electrode, resulting in an ionic imbalance, which in turn causes a buildup of an electric field within the material, resulting in an increase in capacitance. The electrolyte carries a charge when it migrates across, which in turn creates a current flow and an exchange of energy between the two electrodes.

The 397LMX400M2DG is a versatile capacitor that can be used for low-frequency applications such as signal coupling, by-passing, decoupling and energy storage. Because of its low ESR, it is ideal for ripple current and noise suppression. This makes it ideal for consumer electronics, automotive electronics, and power supply applications, where high capacitance values are essential under high temperatures.

In conclusion, the 397LMX400M2DG is a miniature polar capacitor with superior capacitance-voltage-energy rating and low ESR. Its working principle is based on the physics of electrolysis and its applications are wide-ranging, making it suitable for a variety of electronic applications. The 397LMX400M2DG is the perfect choice for those looking for a capacitor with high capacitance values in a small form factor and at lower temperatures.

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