CD7FA681FO3

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Mica and PTFE capacitors are constructed with two metallic foils that are separated by a mica or polytetrafluoroethylene (PTFE) dielectric. Mica and PTFE capacitors are known for their low losses and extremely stable capacitance values over a wide range of frequency and temperature ranges. One of the best models of this capacitor is the CD7FA681FO3. This model is known for its low losses, high frequency stability, and high capacitance.

The CD7FA681FO3 is a general-purpose mica and PTFE capacitor. It is an excellent choice for high-frequency applications, especially where low losses and stability are required. The capacitor is rated for a maximum temperature of 250°C and operating temperature range of -54 to 125°C. This model is convenient for use in applications where space is at a premium, as it is only 0.26 inches in length.

The capacitance of the CD7FA681FO3 is maintained over a range of humilities. To ensure the best performance, these capacitors are usually protected against mechanical stress and moisture. Additionally, the capacitance is highly stable over a range of temperatures and frequencies. This model exhibits low losses right from dc to MHz frequencies. As a result, it can be used in applications that involve low and high frequencies and wide temperature ranges.

The CD7FA681FO3 is based on the PTFE technology, with a thickness of 0.15mm. The high dielectric strength of the polytetrafluoroethylene helps ensure that the capacitor can withstand both sharp and transient overvoltages. It also ensures that the capacitor is not damaged by surge voltages and has good dielectric stability.

The CD7FA681FO3 has a working principle that is similar to other PTFE and mica capacitors. When a voltage is applied across the two opposed metallic plates, a charge imbalance is created that generates an electric field. This electric field creates an opposing force which leads to an accumulation of charge inside the capacitor. The amount of current that passes through the capacitor is determined by the capacitance, and the total amount of energy stored in the form of an electric field is the capacitance value. The resistive losses (dissipation factor) incurred due to current passing through the capacitor are very minimal compared to other types of capacitors.

The CD7FA681FO3 is widely used in applications that require high precision, stability, and low power consumption, such as antenna tuning circuits, clock circuits, switches, and filters. It is also excellent for use in areas where the environmental temperature can range widely, such as aerospace electronics.

In summary, the CD7FA681FO3 is a high-quality mica and PTFE capacitor that is ideal for applications that require low losses, high frequency stability, and high capacitance. This model has a maximum temperature rating of 250°C and an operating temperature range of -54 to 125°C. It exhibits minimal losses from dc to MHz frequencies, making it suitable for a wide range of applications. The capacitor is also well protected against mechanical stress and moisture and has a dielectric strength that helps protect it from sudden overvoltages.

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