UHM1C681MPD6

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Aluminum electrolytic capacitors are widely used in many electronic applications that require both high voltage and large capacitance. The UHM1C681MPD6 is an aluminum electrolytic capacitor that is used in a wide variety of applications. It has a rated capacitance of 6,800uF and a rated voltage of 40V.

The UHM1C681MPD6 is primarily used in switch mode power supplies (SMPS), motor control applications, and high current supply lines. It is designed to handle large transient current spikes or inrush current up to 150% of its rated current. The capacitor is equipped with a metallic jacket that increases its temperature resistance and provides protection against short circuit and over-voltage conditions. The capacitor also has radial lead construction for easy mounting.

The main characteristics of the UHM1C681MPD6 include a temperature range of -40°C to +85°C, high ripple current up to 2.7A (RMS value at 100KHz), low equivalent series resistance (ESR) of 0.32 ohms, a capacitance tolerance of ±20%, and an operating life of more than 4000 hours. Additionally, the capacitor has a high endurance to withstand 1000 hours of 105°C operation.

The working principle of the UHM1C681MPD6 is based on electrolytic capacitance, which is generated by the use of a liquid electrolyte and thin aluminum sheets. A liquid electrolyte acts as a separator between the electrodes, which are typically aluminum foil and aluminum oxide. When the electrodes are connected to a voltage source, the electrolyte undergoes an electrochemical reaction and forms layers of aluminum oxide. These layers of oxide functions as the dielectric, allowing the capacitor to store electrical energy.

The UHM1C681MPD6 is ideal for high-power, high-performance electronics applications that require both high voltage and high capacitance. It is very versatile and can be used in both AC and DC circuits, and in switch mode power supplies. Its high capacitance, low equivalent series resistance, and high temperature endurance make it well-suited for applications such as motor control, UPS, soft start circuits, and power factor correction.

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