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Ta′ntalum Capacitors

Tantalum capacitors are polarized capacitors which use tantalum as their anode material. They are constructed with two electrodes, an anode and a cathode, which are separated by an electrolyte. The electrolyte is usually a gel, having an electrical resistivity of 10 to 40 ohms.cm2. The anode is composed of a highly conductive tantalum powder and is coated with a layer of oxide, while the cathode is composed of an electrolyte, a dielectric material, and a positive or negative current collector. A tantalum capacitor can also have a second dielectric layer, typically an oxide, to help improve dielectric properties and reduce leakage current. The electrodes of the tantalum capacitor are often connected in series to increase capacitance and voltage ratings.

M39003/09-3034/TR Application Field and Working Principle

The M39003/09-3034/TR is a class 2, high-temperature, thin film, chip-type dual-anode tantalum capacitor. It is available in a range of capacitance values, from 0.1μF to 0.47μF, in a variety of case sizes from 10mm to 30mm, and voltage ratings ranging from 16V to 100V. This type of capacitor is primarily used in military and industrial applications, such as high-end RF, space, or satellite communications, where extreme temperature and voltage conditions exist. The capacitor is also used in microelectronics, due to its small size and low profile.

The working principle of the M39003/09-3034/TR is based on Faraday’s law of capacitance, which states that a capacitance formed by two conducting plates separated by a dielectric material is proportional to the surface area of the plates and inversely proportional to the distance between them. The two plates, the anode and the cathode, are separated by an electrolytic gel and the anode is composed of a highly conductive tantalum powder. The dielectric material between the plates is the electrolyte gel, and the capacitance is determined by the design geometry of the capacitor.

The M39003/09-3034/TR also utilizes a special type of technology called anode-coated-dielectric (ACD) technology, which allows for a low-profile design and high temperature operation. ACD technology is a two-level dielectric system which improves the electrical and thermal characteristics of the capacitor. The anode-coated-dielectric technology provides improved capacitance stability, reliability and low ESR characteristics. Additionally, the combination of the anode layer and the dielectric layer also provides electrical noise immunity, further increasing the reliability of the device.

Advantages of M39003/09-3034/TR

The M39003/09-3034/TR offers several distinct advantages when compared to other tantalum capacitors. The most noticeable advantage is its small size, making it ideal for use in microelectronics and high-end RF applications. It is also capable of operating in extreme temperatures, up to 125°C, as well as high-voltage applications, up to 100V. Additionally, the anode-coated-dielectric (ACD) technology increases the capacitance stability, reliability and low ESR characteristics. The combination of the anode layer and dielectric layer also provides electrical noise immunity, further increasing the reliability of the device.

Finally, the M39003/09-3034/TR is a cost-effective solution for applications requiring an extremely small and reliable capacitor. This type of capacitor is designed to meet military-grade requirements, such as MIL-STD-202, and is therefore suitable for the most demanding applications.

Limitations of M39003/09-3034/TR

The M39003/09-3034/TR does have some limitations. Due to its very small size, this type of capacitor tends to have a low endurance and a shorter lifespan when compared to other larger-sized and higher-capacity tantalum capacitors. Moreover, due to its extreme temperature rating, the capacitor can become unstable if exposed to temperatures above 125°C. Finally, even though the anode-coated-dielectric (ACD) technology increases the capacitance stability, reliability and low ESR characteristics, it does not provide for an increased maximum voltage rating.

Conclusion

In conclusion, the M39003/09-3034/TR is a high-quality, high-temperature, thin film, chip-type dual-anode tantalum capacitor used primarily in military and industrial applications. It offers advantages such as small size, reliability, and low-profile design, as well as increased reliability due to the use of anode-coated-dielectric (ACD) technology. However, this capacitor also has some limitations such as low endurance and shorter lifespan as well as shortcoming with regards to its maximum voltage rating. Nonetheless, the M39003/09-3034/TR is still an excellent choice for applications that require an extremely small and reliable high-quality capacitor.

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