21FD3720A-F

Operating Temperature:	-40°C ~ 70°C
Features:	--
Ratings:	--
Applications:	Motor Run; Power Factor Correction (PFC)
Lead Spacing:	0.813" (20.64mm)
Termination:	Quick Connect, Disconnect
Height - Seated (Max):	2.630" (66.80mm)
Size / Dimension:	1.875" Dia (47.63mm), Lip
Package / Case:	Radial, Can
Mounting Type:	Chassis Mount, Requires Holder/Bracket
Series:	MPF
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	--
Voltage Rating - AC:	370V
Tolerance:	±10%
Capacitance:	20µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film capacitors have numerous functions in the industrial and automotive markets, but the 21FD3720A-F has a particularly specialized approach. This type of capacitor is designed for high-frequency applications and utilizes thin film capacitors for a wide range of applications. Let’s take a deeper look at the 21FD3720A-F application field and working principle. ApplicationsThe applications for the 21FD3720A-F capacitors are quite varied. These capacitors are generally used in situations where high-frequency operations are a must. This can include high-speed computing and telecommunications, as well as radio frequency (RF) circuits. As well, these capacitors can be used in situations where a higher operating temperature is necessary, as well as in some medical applications such as defibrillators and pacemakers. The 21FD3720A-F capacitors are particularly noted for their low losses, low inductance levels, and low ESR. As such, these capacitors can be used in a variety of power supply applications, such as switch-mode power supplies, auxiliary voltage supplies, and other high-frequency applications. They can also be used in any digital circuit where a quick response and fast switching is desired.DesignThe 21FD3720A-F capacitors are constructed with a thin film of dielectric material, such as polyester, polypropylene, or ceramic. This very thin film is the critical component in allowing these capacitors to achieve their superior performance. The manufacturing of these capacitors involves a precise process: first, the dielectric material is laminated onto an aluminum substrate in multiple layers. Next, a conductor layer is applied to the substrate, usually using a sputtering process, encasing the dielectric layer. Finally, the electrodes of the capacitors are connected to a lead frame and sealed into the package with epoxy resin or other compounds. Working Principle The 21FD3720A-F capacitors use the same working principle as any other capacitor, which is based on the principle of an electric field. As electricity passes through the capacitor, it creates an electric field between the two conductors. This electric field, in turn, creates an electric potential difference between the two conductors, thereby storing energy in the form of electrons. When the capacitor is connected to a power source, current flows through and begins to charge the capacitor with an electrostatic field. This electric field is then stored within the capacitor, and as current passes through, it is released step-by-step over time. By using this simple system, the 21FD3720A-F capacitor can operate with a much higher efficiency than other capacitors.ConclusionThe 21FD3720A-F capacitors are a type of film capacitor, designed specifically for high frequency operations and applications. With their low losses, low inductance levels, and low ESR, they can provide superior performance in a variety of power supply applications. The construction of the capacitor requires a thin film of a dielectric material, encased within an aluminum substrate, and the electrode of the capacitor is sealed into the package with a resin or epoxy material. By using the same working principle as any other capacitor, the 21FD3720A-F capacitor can operate with much higher efficiency than other capacitors.

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