M39006/21-0161

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Tantalum Capacitors

M39006/21-0161 application field and working principle

Tantalum capacitors are one of the most widely used capacitor types used in a variety of electronic applications. Due to their high capacitance-to-volume and capacitance-to-weight ratio, these capacitors are used in a wide variety of electronic applications such as in power electronics, audio systems, and high-frequency circuits. The M39006/21-0161 is the U.S. military specification for a class of axial leaded tantalum capacitors.

Capacitor Construction

A tantalum capacitor consists of a solid disc of sintered tantalum material that acts as the anode of the capacitor. The dielectric of the capacitor is formed by a layer of oxide that is electrochemically formed on the surface of the anode. The cathode, which forms the second plate of the capacitor, is generally an aluminum foil deposit connected to an internal wire lead, and externally to the circuit. The capacitance of the capacitor is determined by the anode area, the thickness of the dielectric layer, and the amount of dielectric material. In addition, the capacitor is encased in a hermetically sealed metal package which serves several purposes such as providing electrical insulation and mechanical protection.

Working Principle

A basic capacitance is formed between the anode-dielectric-cathode plates. When a voltage is applied to this capacitor, a charge is stored between the plates. This stored charge and the applied voltage form an electrostatic field between the plates. This electrostatic field is responsible for the energy storage of the capacitor. The amount of energy stored in the capacitor is determined by the capacitance of the capacitor, the applied voltage, and the temperature of the capacitor. The amount of charge stored in the capacitor is also affected by these parameters.

Application Field

The M39006/21-0161 is a series of axial leaded tantalum capacitors used for various electronic applications. These capacitors are small, lightweight, and easy to install on circuit boards. They are well suited for use in automotive, industrial, telecommunications, and military applications. They are often used in avionics, power supplies, voltage regulation, and decoupling applications. They are also used in battery backup circuits, microwave communications, portable electronics, and other high-frequency applications.

Advantages

Tantalum capacitors have high capacitance-to-volume and capacitance-to-weight ratios. This makes them ideal for use in small, lightweight electronics such as laptops, cell phones, and wearable electronics. They are also highly reliable, and have long life due to the hermetically sealed metal case. They are also resistant to vibration, shock, and extreme temperatures. Furthermore, they are very cost-effective due to its low manufacturing cost.

Conclusion

The M39006/21-0161series of tantalum capacitors are used in a wide variety of electronic applications due to their high capacitance-to-weight ratio and reliability. They are small, lightweight, and easy to install on circuit boards. They are highly resistant to vibration, shock, and extreme temperatures, and are very cost-effective. As such, they are a great choice for use in automotive, industrial, telecommunications, and military applications.

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