The stability and capacity accuracy of chip capacitors correspond to the dielectric materials they use, and they are mainly divided into three categories: 1. It is a high-frequency capacitor with COG/NPO as the Class I medium. Its temperature coefficient is ±30ppm/℃, and its capacitance is very stable. It hardly changes with temperature, voltage and time. It [...]
The load capacitance refers to the sum of all the effective capacitances inside and outside the IC block connected by the two leads of the crystal oscillator, which can be regarded as the series connection capacitance of the crystal oscillator in the circuit. The different load frequency determines the different oscillation frequency of the oscillator. For [...]
The following two factors can be considered when Selection of coupling capacitor: 1. If the capacity of the coupling capacitor is too small, low-frequency signals will be severely attenuated when passing through the coupling capacitor, or even fail to pass. It is best to use a signal generator to inject a signal at the input of [...]
Monolithic capacitors are also called ceramic capacitors or ceramic capacitors. The basic structure of a simple dielectric capacitor is composed of an insulated central dielectric layer plus two external current-carrying metal electrodes. The construction of a ceramic capacitor includes three parts: ceramic material, metal inner electrode, and metal outer electrode. The monolithic capacitor is actually a [...]
Organic film capacitor use organic plastic film as the medium, and metal foil or metalized film as the electrode. They are made by winding (except for laminated structure). Among them, polyester film and polypropylene film are the most widely used. There are more than a dozen kinds of organic films used in the manufacture of capacitors. [...]