SFC44T17.5K291B-F

Operating Temperature:	-40°C ~ 70°C
Features:	--
Ratings:	--
Applications:	Motor Run
Lead Spacing:	0.810" (20.57mm)
Termination:	Quick Connect, Disconnect
Height - Seated (Max):	3.030" (76.96mm)
Size / Dimension:	2.910" L x 1.910" W (73.91mm x 48.51mm), Lip
Package / Case:	Radial, Can
Mounting Type:	Chassis Mount
Series:	SF
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	--
Voltage Rating - AC:	440V
Tolerance:	±10%
Capacitance:	17.5µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Overview

Film capacitors, also known as plastic film capacitors or dielectric film capacitors, are highly specialized electrical components that offer a range of properties superior to most other types of capacitors. The SFC44T17.5K291B-F is a polypropylene film capacitor that is designed to meet a wide range of applications due to its versatility. It is capable of operating at a voltage of 250VAC with dielectric constant of 2.2 for the dielectric material.

Application Field

SFC44T17.5K291B-F film capacitors can be used in a wide range of applications due to its versatile characteristics such as frequency response, voltage-handling capability, high ripple current, and temperature stability. This capacitor is designed for operations related to general-purpose electronics, linear and switching power supply systems, energy-saving inverters, light dimmers, white goods, and other similar applications. It is also applicable in telecommunications and consumer electronics. Due to its high voltage-handling capability, SFC44T17.5K291B-F is often used in recovering energy storage and voltage decoupling for power quality applications. This capacitor also finds its use in audio-frequency circuits, as well as oscillator circuits, voltage regulators, PFC circuits, and for resonance in EMI supplies.

Working Principle

The SFC44T17.5K291B-F polypropylene film capacitor operates on dielectric principles. It is constructed from two metal plates that are bonded together with a dielectric material. The dielectric material is what separates the two metal plates and it insulates electrons to increase capacitance. When current is applied across the terminals, a charge builds up on each plate. This charge attracts the opposite charge. As the charge across the capacitor reaches its rated voltage, it will stop accumulating any additional charge because further charge will not be able to build up beyond the dielectric’s breakdown voltage. The SFC44T17.5K291B-F, with its highly effective dielectric material, offers superior operational performance for its application. It has low dissipation factor and excellent temperature stability and ripple current capabilities. It is also resistant to electrical stress.

Conclusion

The SFC44T17.5K291B-F film capacitor is capable of performing in a variety of applications due to its versatile characteristics and ideal dielectric material. Its high voltage-handling capability and other features such as high ripple current, low dissipation factor, excellent temperature stability make it suitable for recovering energy storage, voltage decoupling, audio-frequency circuit, oscillator circuits, voltage regulators, PFC circuits, and other applications.

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