What type of capacitor has a fixed value of capacitance?

The type of capacitor that has a fixed value of capacitance is a fixed capacitor. Fixed capacitors are designed to provide a specific capacitance value that does not change under normal operating conditions. This stability in capacitance is critical for many circuit applications where precise capacitance is necessary for proper functionality.

Fixed capacitors typically include ceramic, film, and electrolytic types, among others. Their inability to be adjusted makes them reliable components for use in circuits requiring consistent performance. In contrast, variable capacitors can be adjusted to different capacitance values, and dielectric capacitors typically refer to the insulating material used within the capacitor rather than its capacitance characteristics. Non-polarized capacitors, while they don't have a specific polarity in their connection, can also be of the fixed type, but the term doesn't specifically indicate that they have a fixed capacitance value. Thus, the definition of a fixed capacitor is what makes this choice the correct one.