What does the negative temperature coefficient of AC capacitors mean?

The terrible temperature coefficient of AC capacitors means that their capacitance fee decreases with increasing temperature. This feature permits the capacitor to maintain a quite stable capacitance value while the temperature will increase, for that reason offsetting the impact of temperature at the overall performance of the capacitor to a certain extent.

Normally, the negative temperature coefficient is expressed in parts consistent with million (ppm/° C) in step with degree Celsius. For instance, if a capacitor has a terrible temperature coefficient of -one hundred ppm/° C, which means that its capacitance cost will lower via a hundredth of its rated value in line with degree Celsius of temperature boom.

Negative temperature coefficient capacitors are very beneficial in applications which might be touchy to modifications in capacitance values, mainly in environments with full-size temperature changes. They can offer greater stable capacitance values, supporting to preserve the accuracy and stability of the circuit. Therefore, in applications sensitive to temperature changes, it's miles critical to pick capacitors with suitable terrible temperature coefficients.