M39003/09-2038H

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Tantalum capacitors, or poly(tantalum pentoxide) capacitors, are type of electrolytic capacitor, which consists of a solid tantalum anode, covered by an insulating layer of tantalum pentoxide, and typically filled with an electrolyte made of manganese dioxide. The M39003/09-2038H series are miniature, wrap-around, surface mount, tantalum capacitors featuring a 4-digit marking for identification. They are designed using high conductive anode, which enables them to provide enhanced capacitance stability when compared to other standard devices.

M39003/09-2038H series capacitors are mainly employed in high-temperature and high-frequency applications, including amplifiers, antennas, signal switching applications and base stations. Specialized versions of the series also offer high-reliability, such as radiation-resistant and vibration-resistant devices, which can keep their performance even in extreme situations and environments. In addition, as tantalum capacitors are small in size and offer high stability, they can be implemented in a wide range of applications, ranging from hand-held communication devices to projectors.

The M39003/09-2038H series capacitors employ a mechanism known as the electrochemical breakdown of the dielectric. In this mechanism, a metallic layer applied to the schematic of the capacitor will be oxidized. This oxide layer will act as an insulator, which is able to store electrical charge in the form of electrolytes. The electrolytes, mainly manganese dioxide, will be able to carry current in between the anode and the cathode. As current flows through the capacitor, a potential difference will be produced across the electrical terminals, resulting in the creation of an electric field. This electric field creates a storage energy within the capacitor, allowing it to retain its charge for a specific period of time.

The M39003/09-2038H series capacitors have a maximum working voltage of 20V, and a capacitance range of 4.7µF to 470µF. Designed to withstand temperatures from -55°C to +125°C, they also support a wide operating temperature range of -55°C to +125°C. Other features include high reliable construction, temperature stability requirements, hermetically sealed structure for superior performance, and increased long term stable performance.

The M39003/09-2038H series capacitors are used in a wide range of applications, including low-bias attitude control systems, base stations, antennas, signal switching application, and HF/VHF amplifiers. As a miniature device, they can be quickly and easily applied to many circuits, and their low-leakage current makes them very suitable for use in medical and automotive applications as well.

Overall, the M39003/09-2038H series is a well-designed and highly reliable set of miniature, wrap-around, surface mount, tantalum capacitors. As they offer high conductive anode, a wide working voltage range, long-term stability, and low-leakage current, they can be employed in various applications such as low-bias attitude control systems, base stations, antennas, signal switching applications, and HF/VHF amplifiers.

While there are many other types of tantalum capacitors in the market, the features offered with the M39003/09-2038H series make them one of the most versatile and reliable components for high-temperature and high-frequency applications.

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