Hi,
a few weeks ago I have added a topic concerning the choice of capacitors with low TCC → Looking for a low TCC capacitance
From articles that have been posted in the topic above, that explain the code letters of ceramic capacitor classes, I have come to the point where I am not sure, if I understand the difference between TCC and drift.
TCC:
My understanding of the temperature coefficient until now was, that the TCC is a value in ppm/K (or ppm/°C) that stands for the change of the capacitance when changing the temperature. So for example a NP0 would have a TCC of 0±30 ppm/K.
Drift:
The drift of the capacitor is a value, that determines how much the capacitance changes over time.
According to the graphic above, the value in the second column (Temperature coefficient a 10-6/K) is chosen as drift while the third column seems to be the TCC.
Can someone clear things up?
Additional question: if I want to calculate uncertainty (worst case calculation), does this table in the graphic above contain all information that I need regarding the component?
Thanks in advance!