Mica capacitor

Mica capacitors, amazingly, use thin slivers of the mineral mica as a dielectric. Mica capacitors are used extensively in radio frequency circuits where stable characteristics are required. As shown above, mica capacitors have relatively high breakdown voltages (500V) and are available in relatively small packages.

Silver mica capacitors are not as widely used these days as They used to be. Silver mica capacitors are not as widely used today because they used to. However these electronic components can still be obtained and are used where stability of value is of the Utmost importance and where low loss is required. However, these electronic components can still be obtained and used where stability is the most important value and where low loss is required. In view of this one of Their major uses is within the tuned elements of circuits like oscillators, or within filters. In this view one of their main use is in a tuned circuit elements such as oscillators, or filters.

Values ​​are normally in the range of the between A Few picofarads up to two or possibly three thousand picofarads. Normal values ​​in the range between a few picofarads up to two or perhaps three thousand picofarads.

For this type of capacitor electrodes are the silver plated directly on to the mica dielectric. For this type of capacitor electrodes are silver-plated directly to the mica dielectric. Again Several layers are used to Achieve the required capacitance. Again some of the layers used to achieve the required capacity. Wires for the connections are added and then the whole assembly is encapsulated. Read more about the silver mica capacitor wired connection to be added and then the entire assembly is encapsulated.

The reason for the continued use of silver mica capacitors is the fact that they can offer a very high level of performance, better in many areas than other types of capacitors. But in many applications, other more modern technology provide a level of performance that meets the needs for that particular requirement.

Special properties of silver mica capacitors are summarized below:
High accuracy: Silver mica capacitors can be obtained with numbers tolerance + / - 1%. It's far better than virtually every other form of currently available capacitors.
Temperature co-efficient: The temperature co-efficient of silver mica capacitors are much better than most types of capacitors. Positive temperature coefficient and is usually in the region of 35 to 75 ppm / C, with 50 ppm / C being the average value
Range of values​​: The value of silver mica capacitors are usually in the range between a few picofarads up to two or perhaps three thousand picofarads.
Low capacitance variation with voltage: Silver mica capacitors show very little voltage dependence.
High Q: Silver mica capacitors have a very high Q and power factor is small otherwise. Both are almost independent of frequency.

Although silver mica capacitors have a high tolerance and low temperature co-efficient they are known to jump on the festivities.