CD30FD512FO3F

Series:	CD30
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	5100pF
Tolerance:	±1%
Voltage - Rated:	500V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Radial
Lead Spacing:	0.437" (11.10mm)
Features:	General Purpose
Size / Dimension:	0.780" L x 0.280" W (19.81mm x 7.10mm)
Height - Seated (Max):	0.858" (21.80mm)

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Mica and PTFE CapacitorsMica and PTFE capacitors, also known as plate capacitors, are passive electrical components that store energy in an electrostatic field in order to serve various purposes. These capacitors are usually composed of two or more metal plates separated by a dielectric material. The most common mica and PTFE plate capacitors often used in this kind of applications are CD30FD512FO3F. This particular type are usually in the form of a compact, cylindrical capacitor with an end-to-end length of 30mm and a diameter of 12mm. The letters F and D in the code are indicative of the type of dielectric material used, which in this case is either mica or PTFE, respectively.Application FieldThe CD30FD512FO3F is primarily used to filter out common-mode noise signals in low-voltage, high-frequency electronic circuits. This is a common application in audio equipment, consumer electronics, and communication equipment where an effective noise filter is needed. Moreover, the high-frequency characteristics of these capacitors also makes them suitable for use in circuits that require a high degree of selectivity. This includes radio frequency (RF) applications such as in television receivers, radio receivers, and transceivers.In addition to filtering out unwanted noise, CD30FD512FO3F capacitors are also used for other functions that require a stable voltage. For example, they are useful for power supply filtering in order to ensure a clean power source. Their high isolation capabilities also make them ideal for voltage divider networks which are used to measure very small voltages over a wide range of frequencies.Working PrincipleThe operation of a CD30FD512FO3F capacitor is based on the principle of electrostatic field. When current passes through the capacitor plates, a charge will be deposited on each plate and an electric potential field, or voltage, will be established between them. The voltage across the plates will then be proportional to the capacitance of the capacitor, which is determined by the amount of charge stored in the capacitor and the distance between the plates.The two types of dielectric material, mica and PTFE, used in the construction of the CD30FD512FO3F capacitor offer different properties in terms of dielectric strength, temperature coefficient, and other electrical characteristics. Mica is a form of mineral that is used in the form of thin sheets or “leaves” to divide the two plates of the capacitor. PTFE (Polytetrafluoroethylene) is a fluoropolymer material that is able to withstand higher temperatures and provide superior mechanical strength and electrical characteristics when compared to mica.ConclusionThe CD30FD512FO3F capacitors are passive components composed of two metal plates separated by either mica or PTFE dielectric material. They are used extensively in many applications that require a stable voltage and filtered signals, such as RF applications and power supply filtering circuits. The electrical charge stored in the capacitor establishes a potential field between the two plates that is proportional to the capacitance, which can be determined by the amount of charge stored and the distance between the plates. The two dielectric materials, mica and PTFE, offer different electrical characteristics and so the selection of the dielectric material depends on the application.

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