CERAMIC CAPACITOR AGING MADE SIMPLE

PublishTime：2022-09-19

●Class II dielectrics experience a phenomenon called aging, and it is simply a decrease in capacitance over time due to crystalline changes that occur in all Class II dielectrics(X7R, X5R and Y5V). This is caused by the relaxation or realignment of the electrical dipoles within the capacitor. This phenomenon is affected by time, temperature, voltage (voltage has a minute effect).
●As the relative “dielectric constant” or “εr” of the material increases, this effect is magnified. The εr of the material determines the volumetric capacity of the capacitor. As the εr increases we are able to design capacitors with higher capacitance values. These higher values have their drawbacks too. As the εr increases so does capacitor aging and capacitance loss in the capacitor due to temperature and voltage.
●Class I dielectrics (NP0 – COG) do not exhibit this phenomenon as they are stable over Time, Temperature and voltage. The drawback for these dielectrics is that the εr is relatively low as compared to the Class II dielectrics. This means the maximum capacitance available in these stable parts is much lower than that of the Class II parts.Typically these εr are as follows: NP0 10-100, X7R 2000-5000 and Y5V can be as high as 25000.

Brand of Product：	Johanson Technology
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Product Category：	CERAMIC CAPACITOR More
Application：	More
Data Type：	Technical Documentation More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
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Language：	English Chinese Chinese and English Japanese
Date of Creation：	5/21/2012
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Data Size：	48 KB

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