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Tantalum Capacitors

Tantalum capacitors are widely used in the electronics industry as a form of discrete component for a wide range of different applications due to their small size, low cost and high capacitance values. The particular capacitor being analyzed in this paper is an M39003/01-8361/TR device, and is a surface mount capacitor.

M39003/01-8361/TR Application Field and Working Principle

The M39003/01-8361/TR capacitor is a surface mount version of a tantalum capacitor, and is used in many types of electronics ranging from consumer electronics to military and aerospace applications. It is a polarized, non-polarized, non-inductively wound capacitor with a 350 VDC voltage rating, and a tolerance rating of ± 20%. The maximum operating temperature is rated at +125°C.

The working principle of a tantalum capacitor is that an anode is connected to a thin tantalum oxide film, which acts as the dielectric, with a cathode lead connected to the other side. A small amount of electrolyte covers the electrolytic solution between the two plates, and when a voltage is applied, a small amount of electrical charge is stored in its dielectric layer. This charge builds up over time as more electrical current is added, resulting in a large capacitance value.

The M39003/01-8361/TR is specifically designed to operate effectively in high temperatures and in high power circuits. It has a high reliability due to its low equivalent series resistance (ESR) and is dispersed across a wide range of temperature and frequency ranges. Another benefit is that it has a high temperature coefficient of capacitance (TCC) and is very stable in comparison to other types of capacitors.

When subject to high frequency ripple currents, the M39003/01-8361/TR capacitor is able to maintain its capacitance value as its voltage variation is minimal when operating at low frequencies. Additionally, its rated voltage of 350 VDC allows for use in high voltage applications, and its low ESR value reduces power losses and maintains a constant voltage across the capacitor, making it ideal for high power circuits.

The M39003/01-8361/TR capacitor is also designed to operate effectively in high vibration and shock environments, as it can withstand up to 5,000g’s of vibration and 20,000g’s of shock. The device can also withstand humidity levels up to 95%, making it suitable for a wide range of applications.

Conclusion

In conclusion, the M39003/01-8361/TR is a surface mount tantalum capacitor with a voltage rating of 350 VDC, and a maximum operating temperature of +125°C. It is suitable for high power circuits due to its low ESR, and its high temperature coefficient of capacitance ensures a stable performance in a wide range of environmental conditions. It also offers high levels of vibration and shock resistance, making it a great solution for applications in harsh environmental conditions.

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