420USG82MEFC20X25

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used in electronic circuits for energy storage and signal filtering. The 420USG82MEFC20X25 is an aluminum electrolytic capacitor with a 23x25mm shell size and heat conductive finishes. It has an ultra-low ESR rating of 0.035Ohm and a capacitance of 47000uF. It is rated for a temperature range of -40 to +105 Celsius, an operating voltage of 420volts and a capacitance tolerance of -20/+80%.

The 420USG82MEFC20X25 is a bipolar aluminum electrolytic capacitor and is commonly used in pulse loads with a high ripple current. It has good DC characteristics and is suitable for use in switching power supplies, high-frequency inverters, and other high-power, high-frequency applications.

The working principle of aluminum electrolytic capacitors is based on the oxidation of aluminum. The aluminum foil, anodized in an electrolyte, works as an anode and forms an oxide layer on its surface. The anode is then rolled up with a separator and rolled inside a sealed can. There are two terminals, a positive and a negative one. The terminal connected to the anode end is said to be the positive terminal while the other one connected to the cathode end is called the negative terminal.When voltage is applied across the terminals, electric current flows through the electrolyte and oxides the aluminum on the anode. This forms a layer of metal oxide which acts as the dielectric in an aluminum electrolytic capacitor. The metal oxide dielectric layer has a high dielectric constant, enabling the capacitor to store a large amount of charge and to act as a filter when conducting current through it.

The 420USG82MEFC20X25 capacitor is used in a variety of applications, from consumer electronics to professional audio. It is ideal for use in circuits where high-voltage insulation is required, such as high-frequency inverters and chargers. It is also widely used in automotive and industrial applications, due to its low ESR, long life, and high temperature operation.

In conclusion, the 420USG82MEFC20X25 is an aluminum electrolytic capacitor with a 23x25mm shell size and heat conductive finishes. It is rated for a temperature range of -40 to +105 Celsius, an operating voltage of 420volts and a capacitance tolerance of -20/+80%. It is commonly used in pulse loads with a high ripple current and its wide range of applications makes it suitable for use in a variety of circuitry. The working principle of an aluminum electrolytic capacitor is based on the oxidation of aluminum in an electrolyte, which then forms a layer of metal oxide to act as a dielectric layer.