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Tantalum Capacitors

A tantalum capacitor, also known as a tantalum electrolytic capacitor, is an electrolytic capacitor, a passive component of electronic circuits. It consists of a pellet of tantalum metal as an anode, covered by an insulating oxide layer which acts as the dielectric, surrounded by liquid or solid electrolyte as a cathode. The combination of the oxide layer and the electrolyte acts as a capacitor, which exhibits largely temperature-independent capacitance. Its capacitance value can range from ¹ µF to ^10,000 µF, with a rated voltage anywhere from 4 volts to over 500 volts, depending on the specific capacitor.

135D127X9010C6 Application Field and Working Principle

The 135D127X9010C6 is a high-performance, low-voltage, high-temperature tantalum capacitor designed to meet the needs of a wide range of applications. It is a solid electrolytic capacitor with a rated voltage of 10V and a T.C. of +85°C. The maximum voltage range for this capacitor is between 10V and 16V. It is RoHS compliant, halogen-free, and is suitable for use in most consumer electronics, automotive, and medical applications.

The 135D127X9010C6 utilizes a tantalum anode, a dielectric oxide layer, an electrolytic cathode, and an external capacitor. The anode is a pressed µ-powder tantalum pellet; the dielectric oxide layer is a lanthanum-doped tantalum pentoxide, which gives the device its highly stable capacitance value; the cathode is an electrolytic manganese dioxide layer that acts both as a medium for the electrons and as an insulating medium; and the external capacitor is used to provide stability to the anode-cathode interface. The cathode is provided with a negative lead, which is used to connect the positive side of the capacitor to the anode side.

The operating principle is based on the Faraday’s law of electrolysis. When an externally applied electrical voltage is applied to the electrodes of the 135D127X9010C6, an electrochemical reaction takes place in the electrolytic cathode, causing the electrolytic solution to be converted into a complex ionic species. This electrolyte ionic species forms a double layer of charge carriers on the dielectric oxide layer, creating a capacitance between the anode and the cathode. The capacitance of the device varies slightly depending on the amount of electricity applied.

In the capacitor, the external capacitor stabilizes the capacitance between the anode and the cathode. The capacitance of the device is relatively stable over a wide range of temperatures, and it has great reliability and long-term stability. The 135D127X9010C6 is RoHS compliant, and has a very low efflux of electrochemically generated gases, which make it suitable for use in high-temperature, environmentally sensitive applications.

Tantalum capacitors are widely used in consumer electronics, automotive, and medical applications for their exceptional characteristics such as small size, low self-discharge rate, high temperature stability, high capacitance,and long-term stability. The 135D127X9010C6 is an excellent choice for applications requiring reliability and long-term stability.

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