Tantalum Capacitors
Solid tantalum capacitors are Baylor in 1956 by the United States successfully developed the first laboratory, its performance, is a capacitor small in size but can reach a larger capacitance products. Tantalum capacitor form a wide range, and made suitable for surface mount small-scale and chip-type components. To adapt to the current automation and miniaturization of electronic technology development. Despite the scarcity of tantalum raw materials, tantalum capacitors more expensive, but a large number of high-specific volume of tantalum powder (30KuF.g-100KuF.V / g), combined with capacitors to improve and perfect the manufacturing process, tantalum capacitors, or has been a rapid development , tantalum capacitors growing range of applications. Tantalum capacitors, not only in military communications, space and other areas of application, but also the application of tantalum capacitors to the industrial control, video equipment, communications devices and other products in the large-scale use.
Advantages and disadvantages of tantalum capacitors
The full name of tantalum capacitors is tantalum electrolytic capacitor, electrolytic capacitors are also a kind of metal tantalum to do media, unlike the ordinary electrolytic capacitors, as the use of electrolyte, tantalum capacitors Electrolytic capacitors need not as common as the use of the aluminum-plated paper capacitor burn themselves almost no inductance, but also limits its capacity. In addition, there is no internal electrolyte tantalum capacitor, it is suitable for working under heat stress. Tantalum capacitors are characterized by long life, high temperature, high accuracy, high-frequency filter change-wave properties of an excellent, but the smaller capacity, prices are also expensive than aluminum capacitors, and the resistance to voltage and current capability is weak. It is used in large-capacity filter in places like near the CPU socket to see the shadow of tantalum capacitors, multi-with ceramic capacitors, electrolytic capacitors used in conjunction with, or applied voltage and current small place.
Tantalum electrolytic capacitors in the course of their work, with auto-repair or isolation oxide film of the defect where the performance, so that at any time been reinforced dielectric oxide film and the restoration of its proper insulation, without being a continuous accumulation of damage. This unique self-healing properties, to ensure its long life and reliability advantages. Tantalum electrolytic capacitors have a very high electric field strength of the work, and more types of capacitors are large, as a guarantee of its miniaturization.
Tantalum capacitor filter good reasons:
Tantalum capacitor performance, is a capacitor small in size but can reach a larger capacitance of the product, tantalum capacitors are very easy to the larger capacitance in the power supply filtering, AC bypass uses little competition.
Tantalum electrolytic capacitor with a storage capacity to carry out charge-discharge performance, mainly used in filtering, energy storage and conversion, mark-pass, coupling and decoupling, as well as for time-constant elements. Attention should be paid in the application of its performance characteristics, correct use will help to give full play to its functions, which take into account products, such as working environment and its heating temperature, and to take such measures as lowering the amount of use, if used improperly will affect the working life of the product.
Excellent electrical properties of solid tantalum capacitors, the working temperature range, and takes many forms, excellent volumetric efficiency, with its unique characteristics: tantalum capacitors tantalum metal working fluid is formed on the surface layer of very thin tantalum oxide film. This layer of oxide film dielectric capacitor one end of the pole and composition combined into a whole that can not stand alone. Therefore, within the unit volume has the power capacity is particularly great. The specific capacity is very high, therefore particularly suitable for miniaturization. In the course of tantalum capacitors, with automatic repair or isolation oxide film of the defect where the performance, so that at any time been reinforced dielectric oxide film and the restoration of its proper insulation, without being a continuous accumulation of damage. This unique self-healing properties, to ensure its long life and reliability advantages.