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Packaging process and importance of high-voltage ceramic capacitors

In the electronic field, the classification of ceramic capacitors is based on the withstand voltage level. Low-voltage capacitors generally refer to DC50V or less, medium and high-voltage capacitors are DC100V to 500V, the high-voltage range extends from DC1000V to 6000V, and ultra-high voltage refers to DC6000V and above. A major feature of high-voltage ceramic capacitors is their high voltage resistance. Usually the voltage level is greater than 1KV. Common specifications are 2KV, 3KV, and 4KV. Some models even have a voltage resistance of up to 30KV, which makes them suitable for high-voltage applications. Very practical in application situations.
High-voltage ceramic capacitors use ceramic materials as the dielectric and are in the shape of discs. Its shell is made of ceramic and acts as an insulator. In the packaging process, the use of epoxy resin for packaging is a crucial step for this type of high-voltage capacitors. If epoxy resin is not used for encapsulation, the high-voltage ceramic capacitor will be directly exposed to the air, which will directly affect the capacitance and capacitive reactance of the capacitor. For example, if the 2000PF high-voltage ceramic capacitor originally planned to be produced is not packaged, the capacity may be significantly reduced to several hundred PF. In addition, exposure to air will also cause the capacitive reactance to decrease. As the resistance value and capacity decrease, the performance of the capacitor will be greatly reduced. Therefore, strict packaging during the production of high-voltage ceramic capacitors is the key to maintaining their performance.

In recent years, due to the continuous advancement of materials, electrodes and manufacturing technology, the development of high-voltage ceramic capacitors has made remarkable achievements. These capacitors not only have various specifications and models, but also have exquisite appearance design, evenly powder-coated surface, smooth and crystal clear, compact and beautiful. They have become indispensable components in high-power and high-voltage electronic products and are widely used in various electronic products. Therefore, the packaging process of high-voltage ceramic capacitors is not only related to the performance of the capacitor itself, but also is the basis for ensuring its reliable application in electronic products.