TCX142U040J2L

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Aluminum electrolytic capacitors are passive components widely used in power management systems, which are composed of two aluminum foils and electrolyte. One of the common aluminum electrolytic capacitors is TCX142U040J2L. This article will explain the application field and the working principle of the tantalum electrolytic capacitor TCX142U040J2L.

The TCX142U040J2L is primarily used in DC power supplies, dc converters, data processing circuits that require a relatively high ripple current, and applications such as switching power supplies, AC input line filters, voltage regulation, boost and buck converters and motor control systems. TCX142U040J2L is also often used in automotive electrical equipment, communications power supplies, computers, and instruments.

The TCX142U040J2L is a tantalum electrolytic capacitor containing 20% tantalum and 80% manganese dioxide (MD). Tantalum electrolytic capacitors are often used in low voltage applications due to their smaller size, lightweight and stability. They can also provide high capacitance with small case size. This leads to their use in many portable electronic devices, where size and weight are primary concerns.

The working principle of TCX142U040J2L is based on the fact that two aluminum foils with sufficient dielectric layer are wound in the form of an electrolytic capacitor. When a direct current is applied, an electrolytic reaction occurs, and a thin oxide film is formed on the aluminum foil and on the dielectric layer, yielding a large capacitance. The two aluminum foils are separated by the electrolytic solution. The anode foil is covered with an anodized layer that acts as a dielectric, while the cathode foil is covered with a conductive layer, which forms a capacitor.

When a voltage is applied to the TCX142U040J2L capacitor, the anode is polarized, forming an anode oxide, and the oxide becomes thicker as the voltage increases. The capacitance is mainly determined by the size of the anode oxidation layer. The more oxide formed, the greater the capacitance is. At the same time, the anode and cathode foils are prevented from coming into contact through the insulation on the periphery of the oxide layer. At the same time, the oxide layer also causes the resistance between the anode and cathode to increase. Therefore, the capacitor already has a certain direct current tolerance.

In addition to capacitance, the overall performance of TCX142U040J2L capacitors also depends on other parameters such as leakage current, internal resistance, dielectric strength and so on. All these parameters are necessary in order to measure the functionality and quality of a capacitor. Depending on the application, the performance of the capacitor can be improved if certain parameters are optimized to meet the requirements.

In conclusion, TCX142U040J2L tantalum electrolytic capacitor is a compact and lightweight capacitor, making it ideal for low voltage applications that require a high capacitance without requiring a large case size. Furthermore, it has high capacitance and low leakage current, which is beneficial for most applications. Its working principle and performance parameters all contribute to its wide range of usage and popularity in many markets.

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