Mica Dielectric Variable Capacitor

Mica Dielectric Variable Capacitors are a type of capacitor that falls under the supply class Capacitors in the supply group Electrical and Electronic Equipment Components.

Mica capacitors are known for their stability, high precision, and low loss characteristics. They are commonly used in applications where high frequency stability and low loss are required, such as in radio frequency (RF) circuits, oscillators, filters, and tuning circuits.

The dielectric material used in mica capacitors is mica, which is a natural mineral known for its excellent electrical insulation properties. Mica capacitors are constructed by sandwiching thin layers of mica between metal electrodes, which are then encapsulated in a protective casing.

The capacitance value of a mica dielectric variable capacitor can be adjusted by rotating a shaft or knob, which changes the effective area of the capacitor plates. This allows for precise tuning or adjustment of the capacitance value in electronic circuits.

Mica dielectric variable capacitors are often preferred in applications where stability and accuracy are critical, as they offer high Q (quality factor) and low temperature coefficient characteristics. They are also known for their ability to handle high voltages and high temperatures.

Overall, mica dielectric variable capacitors are reliable components that are widely used in various electrical and electronic equipment applications, particularly in RF circuits and tuning circuits.