SEK3R3M200ST

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Aluminum electrolytic capacitors are widely used in a variety of electronic applications. As one type of capacitors, they are known for their low cost, low impedance, and reasonable temperature tolerance compared to other types of capacitors. The SEK3R3M200ST is a specific type of aluminum Electrolytic capacitor that is particularly applicable for a wide range of applications. This article will describe its application field and working principle.

The SEK3R3M200ST is a non-polarized aluminum Electrolytic capacitor with a nominal capacitance of 200µF. It has a working voltage of 6.3V and temperature range of -55°C to +105°C. The dimensions of the capacitor are 3.2mm x 7mm and it is packaged in a radial leaded can. This capacitor can easily be fitted in any electronic circuit that requires capacitance. Its temp rating and working voltage ensure its durability and reliability, making it applicable for demanding tasks in hostile or extreme environments.

This type of aluminum Electrolytic capacitor has several main applications. Firstly, it can filter out and store energy in dc power lines. When a voltage is applied, the capacitor quickly charges up to the threshold voltage and then remains in that state until a new voltage arrives. This makes it excellent for filtering purposes. Secondly, the SEK3R3M200ST can also be used for transient voltage suppression, meaning it can absorb quick pulses of high voltage and then instantly discharge the stored charge. This is especially useful in noise suppression applications, particularly in automotive electronics. Finally, this capacitor can also be used in AC power line applications for power factor correction.

To understand the working principle of the SEK3R3M200ST, it is important to know the basics of Aluminum Electrolytic capacitors. This type of capacitor is made up of a capacitor plate (anode) and a second plate (cathode), separated by electrolyte. The capacitor plate is typically aluminum foil with an oxide layer, while the cathode is usually composed of a porous carbon electrode or a rolled aluminum foil with an electrically conductive coating. This allows them to be polarized and create one side of the capacitor positive and the other side negative.

The electrolyte between the two plates is most often a majority of ethylene glycol with a small amount of water, and sometimes other additives. This type of electrolyte allows a greater area of contact between the aluminum plates and the electrolyte, giving it a much higher capacitance than other types. This high capacitance and its ability to stay charged over long periods of time, makes the SEK3R3M200ST capable of sustaining high voltages and demanding applications.

When the capacitor is subjected to an alternating current, the anode and cathode plates alternate between them. This action induces a reverse polarity on the plates, leading to ionic currents that flow between them, causing the capacitor to store a charge. When a load is placed on the capacitor, this electrical energy is released in the form of a direct current.

In conclusion, the SEK3R3M200ST aluminum Electrolytic capacitor is a reliable and durable multilayer capacitor with a range of applications in both dc and ac environments. Its ability to quickly charge and store energy makes it an ideal choice for various noise suppression and energy filtering tasks. It has a wide range of temperatures and high working voltages that make it suitable for extreme environments. This makes it a very valuable component in a variety of electronic and electrical applications.

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