Ceramic capacitors are widely used in various fields due to the following advantages: high capacitance, low cost, high reliability, long service time, small size, and ability to withstand high ripple current values.
The high capacitance of ceramic capacitors is due to the high dielectric constant of the dielectric material. The material used in the manufacture of capacitors determines the working range of ceramic capacitors.
Ceramic capacitors can be divided into temperature-compensated ceramic capacitors and high-inductance ceramic capacitors according to temperature characteristics. Due to different temperature conditions, the capacitance of ceramic capacitors changes differently.
1. Temperature-compensated ceramic capacitors
Temperature-compensated ceramic capacitors, also known as high-frequency ceramic capacitors, have a small rate of change in electrostatic capacitance caused by temperature changes, and are mainly used for filtering and coupling of high-frequency circuits. This type of capacitor has the characteristics of low loss, high capacitance stability, and various temperature coefficients. It is suitable for resonant circuits and circuits that need to compensate for excessive effects, and where low loss or high capacitance is required.
2. High inductance type ceramic capacitors
It is a capacitor using materials with high dielectric constant and has the characteristics of high electrostatic capacitance, mainly used as a decoupling capacitor or smoothing circuit capacitor for power circuits. Compared with temperature-compensated capacitors, the capacitance changes due to temperature are larger, so users must be very cautious when they are used in signal circuits such as filters.
Select a reliable manufacturer when purchasing ceramic capacitors can avoid a lot of unnecessary trouble. JYH HSU (or Dongguan Zhixu Electronics) not only has full models of ceramic capacitors with guaranteed quality, but also offers worry-free after-sales. JEC factories has passed ISO9001:2015 quality management system certification; JEC safety capacitors (X capacitors and Y capacitors) and varistors have passed the certification of various countries; JEC ceramic capacitors, film capacitors and super capacitors are in line with low carbon indicators.
Post time: Jun-29-2022