Series:	B32923
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	1µF
Tolerance:	±20%
Voltage Rating - AC:	305V
Voltage Rating - DC:	--
Dielectric Material:	Polypropylene (PP)
Operating Temperature:	-40°C ~ 110°C
Mounting Type:	Through Hole
Package / Case:	Radial
Size / Dimension:	1.043" L x 0.433" W (26.50mm x 11.00mm)
Height - Seated (Max):	0.807" (20.50mm)
Termination:	PC Pins
Lead Spacing:	0.886" (22.50mm)
Applications:	EMI, RFI Suppression
Ratings:	X2
Features:	--

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Film Capacitors

Introduction

Film capacitors, also known as plastic film capacitors or polymer film capacitors, are passive electronic devices used to store electric charge in an electric field. They are generally made of a sheet of plastic, such as polyester, coated with metal electrodes. This type of capacitor has a great variety of applications, from bypass and decoupling power supply lines to frequency compensation of linear power supplies.

B32923C3105M000 Application Field and Working Principle

The B32923C3105M000 is a film capacitor with a capacitance of 3.1uF, a voltage rating of 250V and a temperature range of -55°C to 85°C. It has a high dielectric constant and is suitable for applications where a good temperature stability is required. It is also used in medical and aerospace equipment, as well as in power-line filters and in communication systems.The working principle is quite simple: when an electric field is applied between the layers of metal electrodes, an electric charge is stored in the plastic dielectric. The capacitance of the capacitor is determined by the surface area of the metal layers and the thickness of the dielectric material. When a voltage is applied to the terminals, the capacitor stores electric charge and draws it from the power source. This electric charge then discharges over a period of time, helping to stabilize the current and provide filtering.

Benefits

Film capacitors have many advantages over the more traditional electrolytic and ceramic capacitors. The most important advantages are:

• High dielectric constant, meaning high capacitance for a given size and voltage.
• Low ESR and ESL, meaning better current handling and filtering.
• High stability over temperature, meaning the capacitance does not change drastically with temperature.
• Low leakage current meaning better filtering and long life.
• Low cost due to simplified manufacturing process.
• Low inductance, meaning high frequency response.

Summary

Film capacitors are widely used in a variety of electronic applications due to their high capacitance in a small size, low ESR and ESL, high stability over temperature, low leakage current and low cost. A good example of this type of capacitor is the B32923C3105M000. This capacitor has a capacitance of 3.1uF, a voltage rating of 250V and a temperature range of -55°C to 85°C. It is suitable for applications requiring good temperature stability and high dielectric constant.

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