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Mica and PTFE Capacitors

CD19FD102GO3F Application Field and Working Principle

Mica and PTFE capacitors are a combination of two classic and popular dielectric systems, namely Mica and Polytetrafluoroethylene (PTFE). The combination results in high-performing capacitors with a better level of quality and performance than a single capacitor system.

The CD19FD102GO3F is an X2/Y2 Class capacitor rated for a voltage of 250VAC 50/60Hz. It is a film capacitor with a dielectric of Metallized Polypropylene film and electrodes of Manganin. It features an encapsulation made of PTFE, giving superb electrical properties even at extreme temperatures up to +105°C. The CD19FD102GO3F has good self-healing properties and is RoHS compliant.

The primary application of CD19FD102GO3F is in motor drives as a snubber capacitor, reducing EMI and RFI in the drive. Moreover, it may be used as a main filter capacitor in power supplies. This capacitor offers higher stability and reliability compared to other capacitor types. The mica and PTFE combination makes the capacitor less prone to failure while eliminating leakage due to cracking from mechanical and thermal stress.

The working principle of the CD19FD102GO3F is simple. When a voltage is applied to the capacitor, electrons migrate from one plate to another, and the opposite charges are attracted, forming an electrical field between the two plates. This electrical field stores the energy between the two plates and acts as a dielectric between them. The combination of the mica dielectric and PTFE encapsulation offers high-performance characteristics including low ESR and high insulation resistance, thus providing a highly reliable high capacitance component.

In conclusion, the CD19FD102GO3F is a high-performance mica and PTFE capacitor. It offers superior mechanic and electrical performance, which makes it suitable for motor drives, power supplies, and other filter applications. Its simple operating principle,reliability, and low ESR make it a perfect choice for capacitor applications.

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