Views: 0 Author: Site Editor Publish Time: 2018-06-26 Origin: Site
Ceramic capacitors are ceramics used as a dielectric, on the ceramic substrate on both sides of the silver layer is sprayed, and then made by low-temperature firing silver film as a plate. Its shape is mostly in pieces, but also has shapes such as tube shape and round shape.
Ceramic capacitors are a general term for capacitors made of ceramic materials. Its variety, the size of the big difference. According to the use of voltage can be divided into high pressure, medium voltage and low voltage ceramic capacitors. According to the temperature coefficient, the dielectric constant can be divided into negative temperature coefficient, positive temperature coefficient, zero temperature coefficient, high dielectric constant, and low dielectric constant. In addition, there are classification methods for type I, type II, and type III. Compared with other capacitors, ceramic capacitors generally have the advantages of higher operating temperature, larger specific capacitance, better moisture resistance, lower dielectric loss, and a large temperature coefficient of capacitance. Widely used in electronic circuits, the amount is considerable.
Ceramic capacitors are divided into two kinds of high-frequency ceramic capacitors and low-frequency ceramic capacitors. A capacitor with a small positive capacitance temperature coefficient is used as a loop capacitor in a highly stable oscillation circuit. Low-frequency ceramic capacitors are used in bypass circuits or DC blocking circuits in applications where the stability and loss are not high or in low-frequency circuits. They are easily broken by pulse voltage and cannot be used in pulse circuits. High frequency ceramic capacitors are suitable for high frequency circuits.