M39003/01-7224

Tantalum capacitors are a type of electrolytic capacitor that uses tantalum metal for the electrodes. They are polarized capacitors with superior frequency and voltage characteristics, and they capitalize on the capacity of tantalum to form an oxide film. They are a relatively small capacitor and have a very high capacitance value for their size. They usually come in five sizes, from 0201 (0.2 inch x 0.1 inch) to 2512 (2.5 inch x 1.2 inch).

M39003/01-7224 is a tantalum capacitor specifically designed for avionic applications, due to its high reliability, long life and high temperature range. The lifetime of these tantalum capacitors is up to 1 billion hours with a temperature range that can reach up to 175°C.

The M39003/01-7224 uses tantalum powder and is manufactured using sintering technology which offers great reliability and stability, making it the perfect capacitor for high temperature and low profile applications. This type of tantalum capacitor is ideal for automotive, avionic, and military applications, such as battery backed memory circuits, VRM applications, touch switch and LCD backlight applications. It can also be used in medical and power conversion applications.

The working principle of a tantalum capacitor is based on a chemical reaction that forms an insulating dielectric layer on the surface of the anode. The anode is usually made of conductive tantalum metal with a barrier layer. The dielectric encompasses most of the tantalum metal, separating it from the cathode. When an electric charge is applied, the surface of the anode reacts with the dioxide present in the air or chemical materials to form a thin layer of an oxide film. This oxide film acts as an insulator preventing the electric current from flowing. Therefore, the electrolytic tantalum capacitor is able to store electrical energy and acts as a capacitor.

Tantalum capacitors are known for their high reliability and excellent frequency and voltage characteristics, which makes them the ideal choice for high frequency circuits, timing circuits, and medical applications. They are also preferred for avionics due to their excellent temperature range and their mounting flexibility.