CD19FD221JO3

Series:	CD19
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	220pF
Tolerance:	±5%
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:	0.642" L x 0.189" W (16.30mm x 4.80mm)
Height - Seated (Max):	0.500" (12.70mm)

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Mica and PTFE Capacitors

Mica and PTFE capacitors are two of the most widely used types of capacitors due to their excellent performance and suitability for a wide variety of applications. The CD19FD221JO3 is a mica-and-PTFE capacitor, which makes use of both materials for improved capacitor performance. This article will discuss the application field and working principle of the CD19FD221JO3 capacitor.The CD19FD221JO3 capacitor is designed for applications in which small physical size and extremely high capacitance values are required. This capacitor is ideal for use in high-frequency circuit designs, such as switch-mode power supplies and high-speed logic circuits. The capacitor is also suitable for RF applications, such as filters, broadband amplifiers, mixers, and mobile phones.The CD19FD221JO3 capacitor is a multilayer mica/PTFE capacitor. It is constructed with three electrodes – two of which are made of mica and the third of PTFE (polytetrafluoroethylene). The two mica dielectrics provide a high-dielectric constant material with low dielectric losses at high frequencies. The PTFE dielectric allows for better temperature coefficient of capacitance and greater capacitance density. The mica/PTFE construction also leads to very low straycapacitance, which is important for high-precision circuits.The working principle of the CD19FD221JO3 capacitor is based on the law of conservation of charge. When a voltage source is applied to its terminals, electric current will flow until the load voltage and the voltage source are equal. As electric current flows, an electrostatic field is generated between the terminal and the capacitor plates, resulting in an energy storage effect that builds and dissipates with the rate of electric current.The dielectric material of the mica/PTFE capacitor provides the necessary insulation and increases the capacitance value, resulting in improved performance. Since the dielectric constant of the mica is greater than that of the PTFE, the capacitance value of the CD19FD221JO3 is higher than other types of capacitors. Moreover, the highly uniform dielectric layers of the capacitor provide very uniform capacitance values over a broad range of frequencies.In conclusion, the CD19FD221JO3 mica/PTFE capacitor offers superior performance and reliability in applications where size and capacitance density are of the utmost importance. Its multifunctional construction, along with its excellent dielectric characteristics, make it an ideal choice for high-frequency circuit designs, tuning applications, RF circuits, and many other applications.

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