M39003/09-0322/HSD

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Tantalum Capacitors

Tantalum capacitors are passive electronic components, used primarily to store electrical energy, and have a wide range of applications in consumer electronics, and computers. This article will discuss the application field and working principle of a widely used type of tantalum capacitor, the M39003/09-0322/HSD.

Applications

The M39003/09-0322/HSD has been designed to meet the MIL-PRF-39003/09-0322 specification, and is suitable for use in the most demanding and extreme environments. It has been developed for applications in professional audio and seismic measurements, medical applications, and military avionics. The capacitor has been designed to be resilient to changes in environmental conditions, such as humidity and vibration, as well as high levels of shock and vibration for military and aerospace applications.

The capacitor has a wide operating temperature range of -55 to +125 °C, and can withstand peak operating voltages up to 35 V. The temperature coefficient of capacitance is extremely small (± 5%) over the operating temperature range, making it suitable for application-critical applications, where stability and accuracy are required. The M39003/09-0322/HSD also has excellent tolerance to changes in humidity, and can be used for applications in damp and humid environments.

Construction

The capacitor consists of a cylindrical core made from pure, solid, non-linear, non-inductive tantalum compacts, housed in a metallic sleeve. The value of the capacitance is determined by the surface area of the compacts and the dielectric material (epoxy resin) used to form the core. The exterior of the capacitor is coated with a thick, lacquer-like coating to protect it from environmental conditions.

Working Principle

The M39003/09-0322/HSD operates in accordance with the principles of electrostatic capacitance. In a capacitor, two conductive surfaces (electrodes) separated by an insulating layer (dielectric) allow a charge to build up. A voltage applied across the electrodes will create an electric field, resulting in the buildup of a charge on each electrode. This charge is stored in the capacitor until the voltage is removed, at which point the charge will dissipate.

The M39003/09-0322/HSD has a capacitance of 0.2 µF, and a high ESR of 3500 ohms. This enables it to perform optimally in applications where power supply filtering is required, such as those found in professional audio and medical applications. The capacitor is also widely used in electronic circuits for creating time delays.

Conclusion

The M39003/09-0322/HSD is a versatile, highly reliable tantalum capacitor, compatible with a wide range of applications. Its low ESR and wide operating temperature range make it suitable for use in even the most demanding environments. The capacitor is also relatively inexpensive, making it a popular choice for consumer electronics and computer applications.

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