M39003/03-2010

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Tantalum capacitors are one of the most important components in the world of electronics design. The M39003/03-2010 is an industry standard for the design, construction, testing, and use of tantalum capacitors.

Tantalum capacitors are specifically designed for the high current electronic applications, including pulse circuits, audio and video equipment, digital and power converters. They are a capacitive device that stores and releases energy as an electrical charge.

Application Field

M39003/03-2010 provides the requirement for the design and manufacture of tantalum capacitors, which are intended for use in a variety of electronic applications, including:

• Data processing equipment
• Computers
• Industrial and domestic appliances
• Radios
• Telephones
• AV systems
• Test and measuring equipment
• Automotive electronics
• Military and aerospace applications

M39003/03-2010 mainly applies to tantalum capacitors used in audio, power, or pulse circuit applications.

Working Principle

Tantalum capacitors rely on the property of the tantalum material and its ability to store electrical energy. The basic construction consists of a tantalum powder dielectric layer, a metal electrode layer, and a polymer layer. The dielectric and the polymer layers provides mechanisms to maintain a capacitor’s electrical properties regardless of temperature. This is referred to as Polarization.

When a voltage is applied to a capacitor, the metal electrodes experience an electrostatic polarization, and charges accumulate on each of the electrodes. This occurs due to the nature of the tantalum material that allows it to absorb electrons and protons. As a result, the capacitance of the device decreases and it will usually remain in this state until the voltage is removed. Once the voltage is removed, the charges dissipate and the capacitance will return to its original value.

The M39003/03-2010 covers levels of capacitance, voltage, temperature and electrical strength of the devices, and also provides guidance on the operation limits of the capacitors.

Tantalum capacitors offer several advantages over other types of capacitor such as low losses, high capacitance for a given size, and low ESR. They are also suitable for low voltage applications such as portable and battery backed devices. The M39003/03-2010 provides the industry standard for the design, construction, testing, and use of these components.

The specific data is subject to PDF, and the above content is for reference