CD4FD391FO3F

Series:	CD4
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	390pF
Tolerance:	±1%
Voltage - Rated:	500V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Radial
Lead Spacing:	0.098" (2.50mm)
Features:	RF, High Frequency
Size / Dimension:	0.339" L x 0.161" W (8.60mm x 4.10mm)
Height - Seated (Max):	0.311" (7.90mm)

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Mica and PTFE Capacitors are one of the most common types of capacitors found in a circuit. They are used for various applications such as filters, timing circuits, amplifiers, and other applications where their characteristics of high inductive reactance, low cost, and tunable capacity are desirable.CD4FD391FO3F is an example of a Mica and PTFE capacitor. It is made up of two mica discs with metalized surfaces, an insulating PTFE layer and a supporting base layer of polymer material. This particular capacitor has a temperature range of -40°C to +105°C, a voltage rating of 50V and an insulation resistance of 1GHz. Its typical capacitance range is 4-12pF, but it can be scaled up to 16pF.The CD4FD391FO3F is used for various applications such as filters, timing circuits, and amplifiers due to its high inductive reactance, low cost, and tunable capacity. Filters utilizing this type of capacitor can reduce the amplitude of transmitted and received signals to a specific frequency. The capacitor is also an ideal choice for timing circuits due to it having a low distributed capacitance of less than 0.25 pF which also allows for superior accuracy when setting up digital pulse applications. It is also capable of frequency response control when used in audio and RF applications, as well as being used for load currents up to 500VAC and 500vdc.The CD4FD391FO3F has a working principle that relies on the property of a parallel connected capacitor and the electric field created between the two metalized surfaces. As a result, a potential difference will be established between two metalized plates and stored energy which is proportional to the voltage applied across the capacitor. The amount of stored energy is upper and lower level plate capacitance. These stored charges can be discharged through the conductive material only when the voltage across the capacitors exceed a maximum value. This is the fundamental working principle of the CD4FD391FO3F. Overall, the CD4FD391FO3F Mica and PTFE Capacitor is an exceptionally ideal choice for various applications requiring high inductive reactance, low cost, and tunable capacity. Its working principle is dependant on the capacitor being presence of a parallel connected capacitor and an established electric field between the two metalized surfaces in order to store energy, which is proportional to the applied voltage. This particular capacitor has a temperature range of -40°C to +105°C, a voltage rating of up to 50V, and a capacitance range of 4-12pF which can be scaled up to 16pF.

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