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Aluminium Electrolytic Capacitors

Aluminium electrolytic capacitors are one of the most commonly used types of capacitors in electronic circuits. They offer high capacitance values in a relatively small package. These capacitors have a wide range of applications in a variety of fields, including industrial, automotive and consumer electronics. This article will discuss the UHE1V182MHD3TN application field and working principle.

Features of Aluminium Electrolytic Capacitors

Aluminium electrolytic capacitors are unique due to their high capacitance values, large operating temperature range and long life expectancy. When compared to other types of capacitors, aluminium electrolytic capacitors typically have higher capacitance values, which is why they are often used in applications such as power supplies and DC/DC converters. Additionally, these devices have a wide operating temperature range, up to -40°C to +85°C. This makes them suitable for use in extreme temperature conditions.

The electrolytes in these capacitors have been designed and developed for high reliability and long life. They typically have an operating life expectancy of somewhere between 4000 and 10000 hours –depending on the size, capacitance value and voltage - making them suitable for many industrial applications.

UHE1V182MHD3TN Application Field & Working Principle

The UHE1V182MHD3TN aluminium electrolytic capacitor is designed for applications requiring low impedance and high performance with long life expectancy. This device is suitable for use in automotive electronics, such as ABS, airbags and air conditioning systems as well as industrial electronics, such as switch mode power supplies, LED lighting, HID bulbs and UPS systems. This particular capacitor offers a low leakage current, a high volumetric efficiency, and a long life expectancy of 10000 hours

The UHE1V182MHD3TN is a snap-in type aluminium electrolytic capacitor and is equipped with a tapped ‘snap-in’ top for mounting the capacitor and for screwing the cap down. The capacitor features an anodised aluminium case and large surface area contact for better cooling. It has an operating voltage range of 25 to 450VDC and a capacitance value of 0.1µF to 470µF. The operating temperature range of these capacitors is wide, ranging from -40°C to +85°C.

The internal construction of an aluminium electrolytic capacitor consists of two aluminium foils, one of which is coated with an insoluble electrolyte. The two foils are separated by a paper or other parallel spacer. An anode foil is etched to increase the surface area and therefore the capacitance. The cathode is formed from the board. When an AC or DC voltage is applied to the capacitor, electrons pass through the electrolyte and form an electric double layer on the anode foil that is kept separated from the cathode by the electrolyte. This forms a buffer that stores energy, giving the capacitor its capacitance.

Conclusion

In conclusion, the UHE1V182MHD3TN aluminium electrolytic capacitor is an ideal choice for applications requiring low impedance and high performance with long life expectancy. This device is suitable for use in industrial and automotive electronics. Its capacitance value ranges from 0.1µF to 470µF and it features an operating voltage range of 25 to 450 VDC and an operating temperature range of -40°C to +85°C.

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