DC Bias Effects on X5R & X7R Capacitors

If this capacitor was used as a bypass capacitor with 15V applied, the effective capacitance is not 4.7uF, but only 20% of 4.7uF, or 0.94uF.

See the TDK video link below for the explanation:

https://product.tdk.com/info/en/contact/faq/faq_detail_D/1432616875432.html

Related Links:

Operating Above Resonance - Dr Howard Johnson
EEVblog #626 - Ceramic Capacitor Voltage Dependency - YouTube

That's it !