Two high dielectric constant X7R (R7) characteristic capacitors
The X7R capacitor is called a temperature stable Ceramic capacitor. When the temperature is between -55 ℃ and 125 ℃, the capacity change is 15%. It should be noted that the capacity change of the capacitor is nonlinear at this time. The capacity of X7R capacitors varies under different voltage and frequency conditions, and it also varies over time, changing by approximately 1% every 10 years Δ C. It shows a change of about 5% over the past 10 years. The X7R capacitor is mainly used in industrial applications with low requirements, and its capacity change is acceptable when the voltage changes. Its main feature is that it can have a relatively large electrical capacity in the same volume.

Y5V characteristic capacitor with three high dielectric constants
Y5V capacitors are general-purpose capacitors with certain temperature limitations, with a capacity change of 22% to -82% and a dielectric loss of 5% within the operating temperature range of -30 ℃ to 85 ℃. The high dielectric constant of Y5V allows for manufacturing up to 100 in smaller physical sizes μ F's capacitor.