Analysis of Common Capacitors

Nowadays, with the booming of electronic information technology, new digital electronic products are being introduced at a faster rate, and the production and consumption of electronic products such as flat-panel televisions, notebook computers, and digital cameras continues to increase, which also encourages the rapid development of the capacitor industry.

1. Porcelain dielectric capacitors use a ceramic material as a medium, and are often coated with a common coating of various colors on the surface of the ceramic dielectric capacitor, and the electrodes are covered with silver on a ceramic chip. This kind of capacitor consumes little, has high stability and high temperature and high voltage resistance. Capacity range: 1PF~0.1UF; rated working voltage: 63~630V; application frequency: 50~3000MHz; leakage resistance: more than 10KMΩ.

2, polyester capacitors main features: small size, large capacity, heat and humidity, poor stability. Application occasions: occasions with low requirement for stability and loss Capacity range: 40 PF~4 UF; rated working voltage: 63~630V.

3, low-frequency ceramic capacitor main features: small size, low price, high loss, poor stability Applications: pulse, coupling, bypass and other circuits. Capacity range: 10PF~4.7UF; rated working voltage: 50~100V.

4, the main characteristics of ceramic capacitors: large capacity, small size, high reliability, stable capacitance, high temperature, humidity resistance, but high temperature coefficient, not suitable for the oscillator. Applications: Electronic precision instruments, used in various small electronic devices as resonant, coupling, bypass, filtering and other circuits. Capacity range: 0.58PF~1UF; rated working voltage: double rated voltage.