UCY2D181MHD3TN Capacitors

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Aluminum electrolytic capacitors are a form of electrochemical capacitor that is commonly used in various electronic components due to their high capacitance and low cost. The UCY2D181MHD3TN, in particular, is a type of miniaturized aluminum electrolytic capacitor that is designed for electronic equipment with limited space. It has a rated capacitance of 18µF, an operating temperature range of -40 to +105°C, a rated voltage of 16VDC, and an insulation resistance of > 100MΩ at 25°C.

The UCY2D181MHD3TN capacitor features a three-terminal construction with two leads for electrical connection and one for mounting. Its structure includes a cathode, an anode, a sealed electrolyte, and an embedded component, all of which contribute to improving its temperature rise characteristics. Its voltage derating characteristics, where the rated voltage of the capacitor decreases with higher temperature, are also improved with this construction. The cathode and anode of the capacitor are made of corrosion-resistant aluminum and its sealed electrolyte is typically a solution of ethylene glycol and borax.

The working principle of an aluminum electrolytic capacitor is relatively straightforward. When a DC voltage is applied across the capacitor’s anode and cathode, an electrolytic reaction occurs in the capacitor’s electrolyte, resulting in an accumulation of anionic electric charge on the anode and a cationic electric charge on the cathode.This electric charge accumulation functions as a capacitance and stores energy which allows the capacitor to produce a charge on the output terminals.

The UCY2D181MHD3TN capacitor is used in a variety of applications due to its high capacitance-to-size ratio and its low price. It is commonly used in power supplies, voltage regulators, and industrial equipment where a reliable power source is required. It is also often used as a bypass capacitor in audio equipment and as a filter capacitor in pulsed circuits. Additionally, this type of capacitor is often used to increase the frequency of a voltage or to reduce the size of an electric current.

In conclusion, the UCY2D181MHD3TN aluminum electrolytic capacitor is a versatile, low-cost component used in various electronic applications. It works by using electrochemical reactions to generate an electric charge accumulation and is constructed with corrosion-resistant aluminum and sealed electrolyte for stability and improved temperature characteristics. Its applications include being used as a bypass capacitor in audio equipment, voltage regulators in power supplies, and filters in pulsed circuits.

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