ESRE331M02B

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Aluminum-polymer capacitors are often referred to as hybrid capacitors because they combine aluminum electrolytic capacitors and polymer capacitors into a single device. The ESRE331M02B is an example of such a device, and it is used in numerous applications. This article will look at the application field and working principle of the ESRE331M02B aluminum-polymer capacitor.

The ESRE331M02B is a high-voltage aluminum-polymer capacitor with a capacitance of 3300μF. It is widely used in power supplies, DC/DC converters, voltage stabilizers, and other applications that require high-voltage and high-capacity electrolytic capacitors with stability and reliability. The device has a temperature range of -40°C to +85°C and an extremely low ESR of just 0.66mΩ at a frequency of 100kHz.

The aluminum-polymer capacitor technology used in the ESRE331M02B is based on an anode aluminum foil and a dielectric composed of a polymer. The aluminum foil consists of an anode aluminum foil laminated with a double-layer dielectric film and a separator. The double-layer dielectric film is formed by a layer of coating on the aluminum foil and a secondary coating layer. This double-layer structure enables excellent electrostatic retention and much lower ESR than conventional aluminum electrolytic capacitors.

The ESRE331M02B has a low profile and compact size, with a total height of just 8.5mm. This makes it ideal for use in space-constrained applications where size is a consideration. In addition, the device is resistant to temperature, humidity, shock and vibration, and is RoHS compliant, making it an attractive choice for many applications.

The working principle of the ESRE331M02B capacitor is based on the electrochemical reaction between the anode aluminum foil and the electrolyte. The aluminum foil acts as a cathode, while the electrolyte is the anode. When a voltage is applied to the capacitor, the electrolyte undergoes an oxidation-reduction reaction and produces a charge on the electrode. The charge is stored on the aluminum foil, and in the case of the ESRE331M02B the capacitance is 3300μF. The charge on the aluminum foil creates an electrical field, which allows current to flow through the capacitor.

The ESRE331M02B aluminum-polymer capacitor is a high-performance solution for applications that require high-voltage and high-capacity electrolytic capacitors. It offers precision, high stability and reliability, and a low ESR, as well as an ultra-low profile and a temperature range of -40°C to +85°C. The device is also resistant to temperature, humidity, shock and vibration, and is RoHS compliant.

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