Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Product List
Image of KEMET Ceramic Capacitor Basics - Voltage Coefficient of Capacitance

Another design consideration is capacitance shift on Class 2 and 3 dielectrics when voltage is applied. This is called Voltage Coefficient of Capacitance or VCC. This slide shows an example of VCC measured on a Class 2 X7R and Class 1 C0G MLCC from 0 VDC to 16 VDC on a 16 V rated part. On the left, the graph shows a shift in capacitance up to -60% at rated voltage. Notice that the graph on the right shows 0 capacitance shift for Class 1 C0G over the entire voltage range. This is another reason why Class 1 MLCCs are ideal for applications such as resonant converters and wireless power transfer circuits.

PTM Published on: 2021-01-06