Exhibition Notice
Booth No.: To Be Advised
Date:(12 November 2024 - 15 November 2024 )
Venue: Messe Munich
Location: Germany, Munich
Industry: Electric & Electronics
Automotive Grade Tantalum Capacitors
Polymer Tantalum Capacitors
Dipped, SMD, Low ESR Tantalum Capacitor
Equivalence to AVX, Kemet, Vishay
Booth No.: To Be Advised
Date:(12 November 2024 - 15 November 2024 )
Venue: Messe Munich
Location: Germany, Munich
Industry: Electric & Electronics
(3) The difference lies in the different media, performance, capacity, and structure, resulting in different usage environments and uses. On the other hand, people have experimentally manufactured capacitors with various functions to meet the normal operation of various electrical appliances and the operation of new equipment according to the needs of production practice. With the development of science and technology and the discovery of new materials, better and more diversified capacitors will continue to emerge.
2. Different dielectrics.
What is a dielectric? To put it bluntly, it is the material between the two plates of a capacitor. Most polar capacitors use electrolytes as dielectric materials, and usually the same volume of capacitors has a larger capacity. In addition, the capacity of polar capacitors with the same volume manufactured by different electrolyte materials and processes will also be different. Another thing is that the withstand voltage is closely related to the use of dielectric materials. There are also many dielectric materials for non-polar capacitors, most of which use metal oxide films, polyester, etc. The reversible or irreversible properties of the dielectric determine the use environment of polar and non-polar capacitors.
3. Different performance.
Performance is the requirement for use, and maximizing demand is the requirement for use. If a metal oxide film capacitor is used for filtering in the power supply part of a TV, and the capacitor capacity and withstand voltage required for filtering must be achieved. I'm afraid that only a power supply can be installed in the casing. Therefore, only polarized capacitors can be used for filtering, and polarized capacitors are irreversible. That is to say, the positive pole must be connected to the high potential end, and the negative pole must be connected to the low potential end. Generally, electrolytic capacitors are above 1 microfarad, and are used for coupling, decoupling, power supply filtering, etc. Non-polarized capacitors are mostly below 1 microfarad, and participate in resonance, coupling, frequency selection, current limiting, etc. Of course, there are also large-capacity and high-voltage ones, which are mostly used in power reactive power compensation, motor phase shifting, variable frequency power supply phase shifting, etc. There are many types of non-polarized capacitors, and I will not go into details one by one.
4. Different capacity.
It has been mentioned before that capacitors of the same volume have different capacities with different dielectrics, so I will not go into details one by one.
5. Different structures. In principle, without considering the tip discharge, any shape of capacitor required by the use environment can be used. The commonly used electrolytic capacitors (polarized capacitors) are round, and square ones are rarely used. Non-polarized capacitors have a variety of shapes. Like tube type, deformed rectangle, sheet type, square type, round type, combined square type and round type, etc., see where it is used. Of course, there are invisible ones, and the invisible here refers to distributed capacitance. Distributed capacitance must not be ignored in high-frequency and medium-frequency devices.