Capacitor is an energy storage component. Mainly used in power supply filtering, signal filtering, signal coupling, resonance, DC isolation and other circuits. Capacitor is one of the most basic and important components in electronic equipment. Capacitor production accounts for more than 40% of global electronic component products (others include resistors, inductors, etc.). The production and sales of consumer electronics products, mainly flat-panel TVs (LCD and PDP), notebook computers, digital cameras and other products, continue to grow, driving the growth of the capacitor industry. Specifications of aluminum electrolytic capacitors: Commonly used fixed capacitor working voltages are 6.3V, 10V, 16V, 25V, 50V, 63V, 100V, 200V, 250V, 400V, 450V, 475V, 500V, 600V, 630V. The materials of capacitors are divided into X5R, X7R, X6S, Y5V, and Z5U. Among them, X7R Features, suitable for circuits with wide capacity range and low stability requirements, such as DC isolation, coupling, bypass, frequency identification and other circuits. Y5V: Capacitors made of this type of dielectric material are Class III capacitors, which have the largest dielectric constant among all capacitors, but their capacity is stable.
Poor, sensitive to temperature, voltage and other conditions, suitable for circuits requiring large capacity and little temperature change. Z5U: Capacitors made of this type of dielectric material are Class II capacitors. Their temperature characteristics are between X7R and Y5V, and their capacity stability is poor.
It is sensitive to conditions such as temperature and voltage. It is suitable for bypass, coupling, etc. that require large capacity, operating temperature range close to room temperature, and low DC bias.
in the circuit. Capacitors have a wide range of uses and are commonly used in automotive electronics, network communications, medical cosmetology, security monitoring, digital products, smart homes, entertainment audio and video, switching power supplies, and LED lighting. High-voltage ceramic capacitors, that is, high-voltage ceramic capacitors used in power systems, are generally used for metering, energy storage, voltage dividing and other products in power systems. High-voltage ceramic capacitors have been widely used in the LED lamp industry and occupy a prominent position. High-voltage ceramic capacitors are made of high dielectric constant capacitor ceramics (barium titanate monoxide) extruded into round tubes, discs or disk shapes. Dielectric, and use sintering method to plate silver on ceramic as electrode.
High voltage ceramic capacitor features.
High-voltage ceramic capacitors have the characteristics of wear-resistant DC high voltage and are suitable for use in high-voltage bypass and coupling circuits. Low-loss high-voltage chips have low dielectric losses and are particularly suitable for use in circuits such as television receivers and scanners.
High voltage ceramic capacitors are only needed for high frequencies. Depending on where they are used, their typical function is to eliminate high-frequency interference.
High-voltage ceramic capacitors are used in high-power and high-voltage fields and are required to have small size, high withstand voltage, and good frequency characteristics. In recent years, with the advancement of materials, electrodes and manufacturing processes, the development of high-voltage ceramic capacitors has made great progress and has been widely used. High-voltage ceramic capacitors have become one of the indispensable components of high-power and high-voltage electronic products.
The uses of high-voltage ceramic capacitors are mainly divided into power equipment and pulse energy processing equipment in power transmission and distribution systems.
Due to the particularity of the power system: high AC voltage, high frequency, outdoor environment (-40 degrees to +60 degrees), high lightning voltage/current and other factors, high-voltage ceramic capacitors are difficult to use in R&D and production, and are always in a dilemma. Situation: The harsh environment requires the capacitor to have super stability, that is, the rate of change must be small. At the same time, products such as metering, energy storage, and voltage division have very high accuracy requirements, which places extremely strict requirements on the partial discharge or partial discharge of high-voltage ceramic capacitors in this environment: the partial discharge is zero.
Post time: May-21-2024
