Packaging is the process of assembling the integrated circuit into the final product of the chip, simply put, is to put the bare piece of the integrated circuit produced by the foundry on a substrate that plays a bearing role, the pin is drawn out, and then the fixed packaging becomes a whole. Electrolytic capacitors are naturally packaged through this process.
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If the silicon chips that come out of the factory are cut down from the wafer, they are not packaged, which is not convenient for transportation, storage, welding, and use, and has been exposed to the outside world will be affected by impurities and moisture in the air and rays, causing damage and resulting in circuit failure or performance degradation. This is the meaning of electrolytic capacitor packaging.