Capacitor aging characteristics (3): Why and how do capacitors of barium titanate age?
  • Kondensatoren
  • >
  • Keramik-Vielschichtkondensatoren (MLCC)

A. Over time the internal molecular structure changes in such a way as to create an alignment of electrical dipoles. This alignment results in a molecular structure that can hold less electrical charge than when the molecules are in a totally random state, such as at the time of heating or mounting (soldering) on a printed circuit board*.

Figure 1 : Alignment of Electric dipoles

*Halliday and Resnick, Fundamentals of Physics, 2nd Edition, 1981, Page 492

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