M39003/03-3063/TR

Tantalum capacitors are a type of electrolytic capacitor, which are widely used in an array of electrical and electronic systems due to their high capacitance, low price and long life. M39003/03-3063/TR are tantalum capacitors featuring a high capacitance per unit volume, and are specifically designed for high-reliability applications in military, aerospace and industrial environments.

Application Field

M39003/03-3063/TR are ideally suited for military, aerospace and industrial applications which include:

• Power conditioning in military and aerospace vehicle and weapons systems
• Radar and communications systems
• Data conversion, analogue-to-digital and digital-to analogue (ADC/DAC) systems
• Medical equipment and devices
• Robotics and automation systems
• Communication base stations and cell-phone towers

M39003/03-3063/TR capacitors can also be used in power supplies, audio circuits, telecommunications equipment, instrumentation systems, automotive systems, consumer electronics and computer systems. Although the M39003/03-3063/TR capacitors are designed for high-reliability applications, they can also be used in other non-critical applications.

Components

M39003/03-3063/TR capacitors are composed of three components:

• The inner anode: made up of a solid tantalum pellet, which is surrounded by a dielectric layer
• The outer can: to provide mechanical support and corrosion protection to the other components
• The outer cathode: an insulative material to serve as a casing for the other components

The metal pellet of the anode is coated with an oxide layer to increase its resistance to corrosion, and to act as a dielectric material. The capacitance of the M39003/03-3063/TR capacitors is determined by the area of the metal pellet and the dielectric layer thickness. M39003/03-3063/TR capacitors are able to maintain their capacitance and withstand extreme temperature and vibration due to their robust design and construction.

Working Principle

M39003/03-3063/TR capacitors work on the same principle as all other electrolytic capacitors. An electric field is created when a positive voltage is applied to the anode and a negative voltage to the cathode. This creates an electrical field that is perpendicular to the metal pellet and dielectric layer. The electric field forces the electrons to “collect” onto the anode and flow through the dielectric layer to the cathode.

The capacitor stores electrical energy in the form of an electric field that is inversely proportional to the thickness of the dielectric layer. A thicker dielectric layer will reduce the electric field and hence the capacitance. M39003/03-3063/TR capacitors have a dielectric layer of a fixed thickness, and therefore their capacitance is also fixed.

M39003/03-3063/TR capacitors are renowned for their long life, reliability, and low cost. They are also highly reliable and are specifically designed for high-reliability applications in military, aerospace, and industrial environments.