Why do long-term electrolytic capacitors need to be charged once every six months?|Focus on mid-to-high-end brand capacitor manufacturers

One of the indicators to measure an electrolytic capacitor parameter is the leakage current. The leakage of the new electrolytic capacitors just off the assembly line is very small, and as the storage time (in the factory inventory or in the user inventory) prolongs, the leakage of the electrolytic capacitor The current will be larger and larger. This is because the anodic oxide film of the insulating medium of the electrolytic capacitor is slowly injured in the weakly acidic electrolyte, resulting in some blemishes. Fortunately, the electrolytic capacitor has the advantage of 'self-healingUnder the circumstances, the defect of the oxide film in the electrolyte will be repaired and its insulating medium performance will be restored. This charging process of electrolytic capacitors is called 'aging' according to the industry terminology. Electrolytic capacitor manufacturers generally require aging once after three months of inactivity, but there is no problem with aging once in half a year after being idle. The aging time is 30 minutes to 2 hours (depending on the capacity and voltage). Therefore, as long as the electrolytic capacitor installed on the whole machine is used frequently, the defect of the anodic oxide film of the electrolytic capacitor is constantly being repaired repeatedly to maintain the long-term stable operation of the electrolytic capacitor.

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