Dec. 29, 2023
A Ceramic Capacitor is a type of fixed-value capacitor in which the ceramic material serves as the dielectric. Comprising numerous alternating layers of ceramic and a metal layer functioning as an electrode, this capacitor's electrical behavior and applications are determined by the composition of the ceramic material it incorporates. In simpler terms, a Ceramic Capacitor can be defined as a fixed-value capacitor with ceramic material acting as the dielectric.
Exploring Ceramic Material
Ceramic material, in this context, refers to an inorganic, non-metallic substance often characterized by its crystalline oxide, nitride, or carbide composition. Examples of ceramic materials include carbon and silicon.
Characteristics of Ceramic Capacitors
Ceramic capacitors possess distinct characteristics, including:
Accurate Tolerances and Precision:
Ceramic capacitors are renowned for their high stability and low-loss properties. These components deliver precise results, maintaining stable capacitance values in response to varying factors such as applied voltage, frequency, and temperature.
Advantages of Small Size:
Particularly advantageous in scenarios requiring high component packing densities, ceramic capacitors, like the "0402" multi-layered variant, offer significant space savings. For instance, a "0402" capacitor measures approximately 0.4 mm x 0.2 mm.
High Power and High Voltage:
Engineered to withstand higher voltages, power ceramic capacitors are larger in size compared to other counterparts. They are equipped with specialized terminals for secure connections to high-voltage supplies, tolerating voltages ranging from 2kV to 100kV.
Applications and Uses
Ceramic capacitors find application in various fields, including:
Transmitter Stations:
Used for signal transmission purposes.
Induction Furnaces:
Employed in the operation of induction furnaces.
High Voltage Laser Power Supplies:
Utilized in systems powering high-voltage lasers.
Power Circuit Breakers:
Incorporated into power circuit breaker systems.
High-Density Applications:
Ideal for scenarios demanding high component density.
Printed Circuit Boards:
Widely used in electronic circuits on printed circuit boards.
Moreover, these capacitors serve as general-purpose components and are employed near the brushes of DC motors to minimize radio frequency (RF) noise.
This article is provided by JYH HSU (JEC) Electronics. JEC is a research, development, production, and sales-oriented company specializing in manufacturing and selling various electronic components such as capacitors and resistors.
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