R745F1220AA00J

Operating Temperature:	-55°C ~ 105°C
Features:	--
Ratings:	--
Applications:	High Pulse, DV/DT
Lead Spacing:	0.394" (10.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.433" (11.00mm)
Size / Dimension:	0.512" L x 0.197" W (13.00mm x 5.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	R74
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	1600V (1.6kV)
Voltage Rating - AC:	500V
Tolerance:	±5%
Capacitance:	2200pF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Film capacitors are an important class of capacitors. R745F1220AA00J is a type of film capacitor designed by a famouscompany and widely applied in a variety of industries. This article aims to explain the application field and workingprinciple of R745F1220AA00J in detail.

Structure

In general, the structure of afilm capacitor consists of three essential components: a dielectric film, two electricalterminals and a housing. The film used in R745F1220AA00J is polyester or poly-phenylenesulfide (PPS) laminated with polypropylene (PP). The two terminals are made of aluminum. The housing is made of polypropylene (PP) or polyalcohol polyether sulfone (AES). Through the combinationof these components, R745F1220AA00J produces different capacitances in different smallercomponent sizes.

Application Field

R745F1220AA00J has a wide range of application fields, including automotives, consumer electronics, consumer durables and power supplies, application.In terms of consumer electronics, R745F1220AA00J is used for DC and ACdecoupling, power supply, speaker research and selection, filtering, signal processing, and feedback changeover switch. In consumer durables, R745F1220AA00Jis used for AC motors, refrigerator motor drives, and solenoid valves, etc. In terms of automotive application, R745F1220AA00J film capacitors are used in cars, buses and trucks. Finally,R745F1220AA00J is also used in power supplies such as AC-DC power switching and DC-DC power converters.

Working Principle

The working principle of R745F1220AA00J is based on the principle of capacitor. A capacitor is a device that stores energy in the form of an electric field. When a capacitor is connected to a direct current (DC) source, the current through the device produces an electric field between the two terminals of the capacitor. This electric field accumulates charge and, consequently, energy. The accumulation of electric energy creates a voltage drop across the capacitor. The amount of energy stored in a capacitor is proportional to the value of the capacitance.When the voltage is first applied to the capacitor, the current flowinto the two terminals will increaseuntil it reaches a steady state. At this point, the capacitor is said to be “fully charged”. When the voltage is removed, the voltage across the capacitor will slowly drop until it reaches 0 volts. At the same time, the stored energy in the capacitor is gradually released.

Conclusion

R745F1220AA00J is a type of film capacitor designed and manufactured bya famous company. Its wide rangeof applications including consumer electronics, consumer durables, automotive and power supplies. It works as a capacitor, and stores energyin the form of an electric field. This article explains the application field and working principle of R745F1220AA00J in detail.

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