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Q.Ripple current of MLCC (2): Why do MLCCs (Multilayer Ceramic Chip Capacitors) generate heat with the ripple current?

Capacitors > Ceramic Capacitors > Multilayer Ceramic Chip Capacitors

A. An ideal capacitor does not self-heat with the charge and discharge current (ripple current) that enters and leaves. However, actual multi-layer ceramic capacitors (MLCCs) have very low equivalent series resistance (ESR) and therefore will experience a small loss. This loss generates a small amount of heat, sometimes called Joule heating.

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All related FAQ

Q. Ripple current of MLCC (1): What is the allowable ripple current of capacitors?
Q. Ripple current of MLCC (3): Is heat generation with the ripple current a phenomenon that is unique to MLCCs (Multilayer Ceramic Chip Capacitors)?
Q. Ripple current of MLCC (4): How is the allowable ripple current measured?
Q. Ripple current of MLCC (5): What kinds of risks are involved when currents exceed allowable ripple currents?
Q. Ripple current of MLCC (6): Does polarity affect the allowable ripple current of MLCCs (Multilayer Ceramic Chip Capacitors)?
Q. Ripple current of MLCC (7): Does case size affect the allowable ripple current?
Q. ESR characteristics (1): What is ESR?
Q. ESR characteristics (2): What are the physical components of ESR?
Q. ESR characteristics (3): How much difference is there in ESR between different value MLCCs (Multilayer Ceramic Chip Capacitors)?
Q. ESR characteristics (4): Does frequency affect ESR?
Q. ESR characteristics (5): What affect does temperature have on ESR?
Q. ESR characteristics (6): What should be taken into consideration when the ESR is a critical parameter in a circuit design?
Q. ESR characteristics (7): What can I do if the total temperature (external plus internal) exceeds the maximum rated temperature for the MLCC (Multilayer Ceramic Chip Capacitor)?