Q.
Capacitor aging characteristics (4): What is de-aging of MLCCs (Multilayer Ceramic Chip Capacitors)?
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- Multilayer Ceramic Chip Capacitors
A.
De-aging is a heat treatment used to reset the aging phenomena. Simply put, it restarts the aging process, but it does not prevent it.
Heating the capacitor above its Curie Temperature causes the crystalline structure to return to its optimum unaligned configuration resulting in maximum capacitance. TDK recommends 150°C/1 hour for de-aging. Note : It is important to record the time of last heat (TOLH), or de-aging time, for future capacitance measurements.
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