947D391K102BEMSN

ESR (Equivalent Series Resistance):	1.5 mOhms
Features:	--
Ratings:	--
Applications:	DC Link, DC Filtering
Lead Spacing:	1.772" (45.00mm)
Termination:	Screw Terminals
Height - Seated (Max):	3.976" (101.00mm)
Size / Dimension:	3.543" Dia (90.00mm)
Package / Case:	Radial, Can
Mounting Type:	Chassis Mount
Operating Temperature:	-45°C ~ 85°C
Series:	947D
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	1000V (1kV)
Voltage Rating - AC:	230V
Tolerance:	±10%
Capacitance:	390µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Film capacitors (FILCAPs) are a type of energy storage device, a type of capacitor, composed of thin layers of non-metallic material (polyester film, polypropylene film, and polyphenylene sulphide film).  They are designed to operate over a wide temperature range and provide excellent performance under high current and voltage stress. In comparison to other capacitor types, FILCAPs are small in size but have a very low Electric-field strength, enabling them to store a larger amount of energy and in much shorter periods of time. 

947D391K102BEMSN Application Field and Working Principle

The 947D391K102BEMSN Film capacitor is a low-voltage, wide temperature-range energy storage device. Due to its ability to handle high current and voltage stress, it is mainly used in critical systems such as voltage and current regulation, power electronic systems, and high reliability applications. It is suitable for application over wide temperature range (-55°C to +155°C) which makes it suitable for a wide variety of application fields. The 947D391K102BEMSN Film capacitor is a non-polar structure which is formed by two layers of polypropylene-film and two layers of polyethylene-film internal metal electrodes and an external metal electrode. It is equipped with a high-frequency impedance, low ESR at high temperature, and stable capacitance values over the temperature range.The 947D391K102BEMSN Film capacitor works on the principle of an electric double-layer effect. When a voltage is applied, electric charges are stored in the electric double-layer as a product of the interface between the two electrodes, generating capacitance. Depending on the applied voltage, the capacitance of the electric double-layer can increase or decrease. This effect is known as electrochemical capacitance and causes a small electric current to flow into the system and then is discharged. This small current allows the device to maintain a stable capacitance over its range of temperature.

Properties and Performance Parameter of the 947D391K102BEMSN Film Capacitor

The 947D391K102BEMSN Film capacitor is a non-polar device with low DF, low ESL, high RI, and high dissipation factor. These characteristics enable the 947D391K102BEMSN Film capacitor to maintain stable capacitance values over its temperature range. Some properties and performance parameters of the 947D391K102BEMSN Film capacitor are listed below: • Capacitance: 0.047µF to 10µF • Capacitance tolerance: ±0.25% to ±10% • Voltage rating: 1V to 16V• Withstand voltage: 1.2*V rated • Dielectric strength: 1000VAC or 1500VAC • Ripple current: 0.15*I rated @85 Celsius for 2 seconds• Temperature range: -55°C to +155°C • Equivalent series resistance (ESR): Less than 0.50Ω • Insulation resistance (IR): >100MΩ at 100V • Dissipation factor (DF): 0.005 @1KHz • Lead wire: Tinned or silver plated copper

Conclusion

The 947D391K102BEMSN Film capacitor is a low-voltage, wide temperature-range energy storage device with excellent performance parameters. Its properties enable it to be used in critical systems such as voltage and current regulation, power electronic systems, and high reliability applications. The 947D391K102BEMSN Film capacitor works on the principle of an electric double-layer effect and is capable of storing a large amount of energy in a short period of time.

References

[1] J. Griffith, "What is a Film Capacitor?", All-Spec, https://www.all-spec.com/blog/article/what-is-a-film-capacitor[2] AVX Corporation, 947D391K102BEMSN, http://www.avx.com/catalog/catalog.ds?PART=947D391K102BEMSN&Dist=Mar.[3] Kemet corporation, "Film Capacitor Applications: Overview of Advantages and Limitations", https://www.kemet.com/Lists/KEMET%20Blog/DispForm.aspx?ID=255&Source=http%3A%2F%2Fwww%2Ekemet%2Ecom%2Fen%2FBlog%2FPosting%2F255%2Easpx.

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