Ceramic capacitors are very common in electronic products. It is a kind of capacitor with high dielectric constant ceramic material as the dielectric, coated with a metal film (usually silver) on the dielectric, and sintered at high temperature to form a disc-shaped capacitor. Since the dielectric material is ceramic, it is called ceramic capacitors. After this process, ceramic capacitors should be coated with protective enamel, or encapsulated with flame-retardant epoxy resin.
What is the use of the enamel and epoxy resin on ceramic capacitors?
The use of enamel on capacitors can improve heat resistance; epoxy resin remains stable at high temperatures, is not easy to burn, and has good fire resistance. Ceramic capacitors are used in circuit boards of electronic products. When electronic products are working, the current flows through the circuit through electronic components, and the current is related to temperature. When the current becomes larger, the temperature will rise. When the current exceeds the working range, and the temperature rises to a certain level, the capacitor is damaged and may explode, damaging the circuit and making the electronic product unusable.
Therefore, the use of protective enamel and epoxy resin on ceramic capacitors can prevent ceramic capacitors from being damaged and exploding due to high temperature and cause fire, causing personal injury and property loss, and protecting electronic products and electrical appliances.
Ceramic capacitors have the characteristics of high working temperature, high voltage resistance, good moisture resistance, and small dielectric loss, and are used in electronic circuits. Ceramic capacitors of good quality are not prone to failure when used in electronic products.
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Post time: May-15-2023