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With continuous advancements and progress in technology, the updating pace of various electronic components is also accelerating. However, for certain specific types of capacitors, such as metallized polypropylene film capacitors, their storage duration remains a topic of great concern. The length of storage time not only relates to the lifespan of these capacitors but also affects the stability and reliability of the entire electronic device.
How long can metallized polypropylene film capacitors be stored?
First, we need to understand the basic characteristics of this type of capacitor. Metallized polypropylene film capacitors are high-performance capacitors that use metallized polypropylene film as the dielectric. Due to their high dielectric constant, high insulation resistance, low loss, low-temperature coefficient, and other advantages, they are widely used in various electronic devices.
Regarding the storage time of this type of capacitor, it is actually difficult to provide a specific number. The length of storage time is related to many factors, such as ambient temperature, humidity, usage conditions, and so on. Generally speaking, the storage time of metallized polypropylene film capacitors should not exceed two years. This is because, during storage, the capacitors may experience aging phenomena such as a decrease in capacitance value and an increase in leakage current, thereby affecting the performance and stability of electronic devices. Of course, this is only a theoretical limit, and the actual situation needs to be judged based on actual usage conditions.
Precautions for storing metallized polypropylene film capacitors
Ambient temperature: Excessively high ambient temperature will shorten the lifespan of the capacitors. Generally, the storage ambient temperature for metallized polypropylene film capacitors should be controlled between -40℃ and +105℃.
Humidity: An overly humid environment may cause the capacitors to get damp, thereby affecting their performance and lifespan. Therefore, the ambient humidity for storing these capacitors should be controlled between 30% and 80%.
Avoid contamination: When storing metallized polypropylene film capacitors, contamination should be avoided, such as dust, oxides, etc. These contaminants may cause short circuits, open circuits, and other problems in capacitors.
Avoid physical damage: In the process of storage or transportation, physical damage to the capacitors, such as squeezing or impact, should be avoided. This may cause damage to the internal structure of the capacitors, thereby affecting their performance and lifespan.
In conclusion, the storage time of metallized polypropylene film capacitors depends on multiple factors. To ensure the performance and lifespan of the capacitors, we should pay attention to controlling the storage environment's temperature, humidity, and other parameters, and avoid contamination and physical damage. In actual use, if aging phenomena or other problems are found in the capacitors, they should be replaced or dealt with promptly to ensure the stability and reliability of the entire electronic device.