Series:	CD19
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	4300pF
Tolerance:	±2%
Voltage - Rated:	500V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Radial
Lead Spacing:	0.343" (8.70mm)
Features:	General Purpose
Size / Dimension:	0.689" L x 0.331" W (17.50mm x 8.40mm)
Height - Seated (Max):	0.571" (14.50mm)

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Mica and PTFE Capacitors

Mica and PTFE capacitors are a type of capacitor that is designed to have a low dielectric loss and stable capacitance over a wide range of temperatures. Many different types of these capacitors are commercially available, and they are used for a variety of applications. CD19FD432GO3 is one of the most commonly used mica and PTFE capacitors, offering excellent electrical and mechanical characteristics combined with low dielectric loss.

Application Field

Mica and PTFE capacitors are widely used in high-efficiency electronic circuits because of their low series impedance and low dielectric loss, making them ideal for voltage stabilization and filtering. They are also common in RF circuits due to their high frequency capacity, and can be used in digital circuits to reduce noise. They are also used in power supplies, such as the switch mode power supply, and transducers for measuring temperature, strain, pressure, and other physical quantities.

Working Principle

Mica and PTFE capacitors are composed of two metals that are separated by mica dielectrics. The mica dielectrics form a genuine capacitor that is capable of storing a charge and organizing an electric field. The metals are usually made of copper, stainless steel, aluminum, or titanium, and the mica dielectrics are a combination of mica and PTFE (polytetrafluoroethene).The electric field causes the charge carriers, or electrons, to distribute differently within the metal plates, and this creates an electrical potential across the two plates. The capacitance of this capacitor is determined by the size of the plates, the distance between them, and the type of dielectrics used. By adjusting the size of the plates, the distance between them and the type of dielectric material used, the capacitor’s capacitance can be adjusted.Mica and PTFE capacitors are very efficient at storing and releasing electrical energy, and they have a wide operating temperature range. The dielectric constant of the mica dielectrics is very stable over a wide temperature range, enabling the capacitor to maintain a consistent capacitance and low dielectric loss when operated at high temperatures. The combination of high temperature stability and low insertion losses makes these capacitors ideal for use in high-efficiency electronic circuits.

Conclusion

CD19FD432GO3 is one of the most common mica and PTFE capacitors, and it is widely used in high-efficiency electronic circuits because of its low series impedance and low dielectric loss. The capacitor is composed of two metal plates separated by mica dielectrics, and the capacitance is determined by the size of the plates, the distance between them, and the type of dielectrics used. These capacitors are very efficient at storing and releasing electrical energy, and they have a wide operating temperature range, making them ideal for use in high-efficiency electronic circuits.

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