M39003/01-2262

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Tantalum Capacitors

Tantalum capacitors, also known as tantalum electrolytic capacitors, are an electrochemical construction type of capacitors available both as wet or dry-types. They have several features that makes them valuable components in today’s electronics, such as high capacitance, low leakage, extremely rugged construction and excellent temperature stability.

M39003/01-2262

The M39003/01-2262 tantalum capacitor is a small case size, light weight, axial lead capacitor designed for DC-DC converter applications and other energetic and switching power conversion applications. It is intended for use in high-temperature, high-dielectric constant environments. This capacitor utilizes a dielectric oxide powder, mixed with manganese dioxide as the electrolyte and a tantalum wire as the cathode, which is connected to the outside terminal. The anode terminal is a solid solder connection.

Application Field

Tantalum capacitors are typically applied as bridging capacitors, decoupling capacitors, energy storage devices, filter capacitors, and in many other applications. Specifically, the M39003/01-2262 tantalum capacitor is designed for applications requiring high-voltage and high-temperature capability. It is specifically useful in the high-dielectric constant, high-temperature environments encountered in DC-DC converters. It is also used in automotive, industrial and telecom applications.

Working Principle

The working principle of a tantalum capacitor is as follows: when voltage is applied, positive ions migrate toward the anode, while negative ions move toward the cathode. As the ions accumulate on either plate, a charge accumulates and a capacitance is generated. The capacitor holds this charge until the voltage changes. When the voltage changes, the charges on the plates move in the opposite direction, discharging the capacitor.

The M39003/01-2262 tantalum capacitor utilizes an anode made of tantalum and a cathode of manganese dioxide. The dielectric oxide powder is combined with manganese dioxide electrolyte to form a solid electrolytic capacitor element. The element is encapsulated in a hermetically sealed metal case with the ends of the tantalum wire connected to the terminal pins. The solid tantalum anode and manganese dioxide electrolyte form a unique high-reliability capacitor construction, having excellent stability for high temperature, high AC voltage, and high frequency applications.

Conclusion

Tantalum capacitors have excellent performance at both high and low temperatures due to their unique construction. The M39003/01-2262 tantalum capacitor is designed specifically to meet the challenges posed by DC-DC converters and power conversion applications. Its robust construction, high capacitance and low leakage have made it a popular choice for these demanding applications.

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