F1778415M3I0W0

Operating Temperature:	-55°C ~ 110°C
Features:	--
Ratings:	X2
Applications:	EMI, RFI Suppression
Lead Spacing:	0.886" (22.50mm)
Termination:	PC Pins
Height - Seated (Max):	0.610" (15.50mm)
Size / Dimension:	1.024" L x 0.236" W (26.00mm x 6.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	F1778X2
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	630V
Voltage Rating - AC:	310V
Tolerance:	±20%
Capacitance:	0.15µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

F1778415M3I0W0 is a type of film capacitors designed for high-frequency switching power supplies. These capacitors, also known as PP (Polypropylene) and PET (Polyethylene Terephthalate) capacitors, combine low dielectric losses, high stability and excellent self-healing properties suitable for complex designs. Film capacitors can be used for various applications in the Industrial Switching Power Supplies, High-Frequency Resonant Inductors and Motors, and Inverters.

Application Field

Film capacitors are utilised in many different applications due to their robustness, stability and self-healing capabilities. In industrial switching power supplies, film capacitors offer excellent protection against over-voltage, over-current and EMI-type interference. Furthermore, their excellent self-healing and insulation properties also provide superior short-circuit protection. Film capacitors also provide improved thermal compensation, which allows greater efficiency and reliability of control circuits. In addition, film capacitors are widely used in other applications and circuits, such as high-frequency resonant inductors and motors, active harmonic cancellation, and filtering. They are also suitable for high-frequency inverters used in advanced electronic systems, as they allow an accurately controlled output current, even at low frequencies. Finally, film capacitors are also frequently applied in military hardware, including special defence systems and power inverters for electric vehicles.

Working Principle

The basic fundamental principle of F1778415M3I0W0 is based upon the electrical properties of a film capacitor. It is effectively an insulating plastic layer that creates a very thin electrical capacitance between conductive layers. The higher the dielectric strength of the plastic insulating layer, the higher the capacitance of the device. The capacitance range, in farads, can vary from a fraction of a picofarad up to several microfarads. The charge is stored within the insulating plastic layer, which has a low dielectric coefficient. This results in low leakage and high reliability, as the layer effectively acts as a dielectric barrier between the two conductive surfaces. This facilitates a high degree of insulation from external interference. In a pure electrical form, the capacitance is determined by the area of the capacitor plate, the distance between the two plates and the dielectric constant of the material. When a voltage is applied across the plates, the electric charge will be stored on each plate until the current flows in the same direction.

Conclusion

In conclusion, F1778415M3I0W0 film capacitors are suitable for a wide range of applications. These include industrial switching power supplies, high-frequency resonant inductors and motors, and inverters. They provide excellent protection against over-voltage, over-current and EMI-type interference, superior thermal compensation, and improved self-healing and insulation properties. Their working principle is based upon the electrical properties of a film capacitor, in which a low dielectric coefficient allows low leakage and high reliability.

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