BFC237138474

Operating Temperature:	-55°C ~ 105°C
Features:	Long Life
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.300" (7.62mm)
Termination:	PC Pins
Height - Seated (Max):	0.728" (18.50mm)
Size / Dimension:	0.394" L x 0.157" W (10.00mm x 4.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	MKT371
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	63V
Voltage Rating - AC:	40V
Tolerance:	±10%
Capacitance:	0.47µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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Introduction

Film capacitors (BFC237138474) are a type of capacitor that is developed using a high quality film dielectric to provide superior stability and reliability. They are employed in a wide variety of applications due to their excellent electrical properties. In particular, they are especially suited for use in high frequency circuits such as in mobile phones, audio amplifiers and laptop computers. Additionally, they are a great choice for applications where long term stability, low noise, and high current/voltage survival capabilities are important.

Application Field

Film capacitors are widely used in numerous applications, primarily in higher frequency circuits. Examples include:

• Audio - Film capacitors are used to store energy in the audio circuitry of radios and televisions, allowing for improved sound reproduction.
• Medical Equipment – High precision medical diagnostic equipment such as CT scans, MRIs and X-rays require highly reliable film capacitors for proper operation.
• Communication – Film capacitors are used in many types of telecommunication systems and networks.
• Automotive – Film capacitors are especially suited for use in fuel injection and ignition circuits in automotive engines.
• Computers – High quality film capacitors are used for a variety of applications in high performance computer CPUs, video boards, and memory modules.
• Consumer Electronics – Film capacitors are used in numerous consumer electronic devices such as home theater amplifiers, GPS navigation systems, and digital media players.
• High Voltage Power – Film capacitors are used in a variety of high voltage power distribution networks, from ac filters to DC link capacitor filter networks.

Working Principle

The working principle of a film capacitor is simple and is based on the principle of electrostatics. In a nutshell, the film capacitor consists of two conductive plates and an insulating material known as a dielectric. This dielectric is usually a polyester, polypropylene or polyethylene film. When a voltage is applied to the plates, electrons accumulate on the plates, creating an electric field which stores energy. The more energy stored, the higher the capacitance.When a voltage is applied to a film capacitor, the dielectric material experiences a change in its electrical properties. This change is known as polarization and is the key to understanding the working principle of a film capacitor. The dielectric will polarize in response to the applied voltage, with the positive plate being more positive and the negative plate being more negative. This polarization in turn creates an electrical potential, known as the dielectric potential, which stores energy within the dielectric material. This stored energy is what gives the film capacitor its capacitance.

Conclusion

Film capacitors (BFC237138474) have many benefits over other caps due to their superior electrical properties. For applications requiring long term stability, low noise, and high voltage/current capabilities, they are ideal. Film capacitors are used in a wide variety of applications, including audio, automotive, communication, and consumer electronics. The working principle is built on the principle of electrostatics, with the dielectric material polarizing to create an electric field, thus storing energy and granting the capacitor its capacitance.

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