CD42FD473GO3F

Series:	CD42
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	0.047µF
Tolerance:	±2%
Voltage - Rated:	500V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Radial
Lead Spacing:	1.063" (27.00mm)
Features:	General Purpose
Size / Dimension:	1.469" L x 0.449" W (37.30mm x 11.40mm)
Height - Seated (Max):	0.909" (23.10mm)

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Mica and PTFE Capacitors

Mica and PTFE capacitors possess unique properties that make them highly attractive for a range of applications, ranging from controlling power to providing signal filtering and circuit protection. This article will explore the application field and working principles of the CD42FD473GO3F, one of the most popular Mica and PTFE capacitors.

Characteristics of Mica and PTFE Capacitors

Mica and PTFE capacitors, also known as polytetrafluoroethylene (PTFE) capacitors, are comprised of multiple layers of thin foil and PTFE dielectric. This arrangement produces a high-value, low-volume capacitor with excellent insulation and high heat resistance. The effective insulation of the dielectric is responsible for the low reactance of the capacitor, which means that it can respond to high-frequency signals more rapidly and reduce noise production. The CD42FD473GO3F is composed of two metalized polyester PTFE films sandwiched between two plates of mica. It boasts a maximum capacitance of 470 pF, an operating temperature range of -50 to +125 degrees Celsius, and a voltage rating of 250V.

Uses for Mica and PTFE Capacitors

Mica and PTFE capacitors are typically used in power transmission and distribution equipment, such as power supplies, motor control centers, and telecommunication systems. In all of these applications, the capacitors are employed to reduce power losses and improve the signal response by keeping circuit noise to a minimum.Due to their excellent insulation properties, Mica and PTFE capacitors are also used in high-voltage applications that require relatively low capacitance values. This includes lightning arresters and power filters, as well as within surge protectors and transient voltage suppressors. Mica and PTFE capacitors are particularly popular in radio frequency (RF) applications, where their advantageous characteristics are used to reduce circuit noise and increase insulation. They are becoming increasingly important for consumer electronics too, as the need for robust signal processing and power management increases.

Working Principle of the CD42FD473GO3F

Like all capacitors, the CD42FD473GO3F works by storing and releasing electrical charge across its plates. When a potential difference is applied to its terminals, the capacitor begins to charge via electrostatic induction. This induces an electric field between the plates, which is responsible for the release of stored energy when the potential difference across the capacitor is removed. The CD42FD473GO3F capacitor is typically connected in parallel with its load. When no potential difference is applied, the capacitor acts as a short, allowing electric current to pass. When a potential difference is applied, the capacitance of the capacitor decreases, increasing the capacity of the capacitor and preventing the passage of electric current.

Conclusion

The CD42FD473GO3F is a versatile capacitor with an expansive list of applications. It boasts superb insulation properties and is capable of withstanding high temperatures, making it perfect for use in high-voltage applications, signal processing, and power management. Its low reactance also makes it an excellent choice for use in radio frequency applications, as it is able to respond quickly to signals and reduce circuit noise.

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