1.瓷介电容器 Ceramic Capacitors
用氧化钛 , 钛酸锶等材料制成陶瓷并以此作为介质制成的电容器称为陶瓷电容器 ,这种容器广泛使用于各种电子设备 .
The ceramic is a dielectric whose main material is Titanium Xxide Titanate or Strontium. It becomes ceramic capacitor after a process called silver coating and is widely applied in various kind of electronic equipment.
2.瓷介电容器的分类 Classification
依据瓷介电容器的特点 , 一般可分为三大类 .
Basically, ceramic capacitor can be classified into 3 classes, according to distinct application features.
种类I:温度补偿电容器 Class I : Temperature Compensation Type Capacitor (T.C.)
温度补偿电容器主要由氧化钛组成 , 具有较低的介电常数 ,低损耗 ,高稳定性 , 电容量随度变化近以绒性 . 这种电容器主要使用於阶振回路或其它高要求值和高稳性的电路.
Temperature compensation capacitors mainly consist of Titanium. They have the characteristics of low constant, low losses (high quality factor) ,high stability and linear temperature relationship . All these features suited its capability for temperature compensating mainly use in resonant circuits or in other circuits for which high Q and high temperature-base stability of circuit constant are required.
种类II:高电介质常数容器 Class II:High-Dielectric Constant Type Capacitor (Hi-K)
高电介质电容器主要以钛酸负钡为苦基而制成, 此类电容器容量大 . 体积小 .低损耗 ,在电路中隔直流 .旁路. 耦合之用.
High-dielectric are mainly consist of Barium Titanate. It is known as Hi-k because of its high power factor. These capacitors which have the characteristics of high capacitance value, small internal impedance and excellent power factors are widely used in electronic circuits such as coupling, decoupling and by pass purposes.
种类III:半导体电容器 Class III:Semi-Conductive Type Capacitor (S.C.)
圆片型半导体电容器具有较高介电常数, 电容器体积更小, 电容量更大, 有表面和晶界层之分 .
These disc type semiconductive capacitors are reformed smaller size with larger capacitance than usual Hi-K type ceramic capacitors.These capacitors are widely used in electronics circuits such as constant detemination, coupling and by-pass purposes.
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