38FB4455-F

Film capacitors can be divided into metallized film capacitors and film capacitors. 38FB4455-F is a metallized film capacitor. （）It is used in high voltage applications where it is subjected to direct voltage and fast voltage changing. Its cylindrical aluminum package design provides superior vibration protection and corrosion protection, making it suitable for outdoor applications.

Application field:

The 38FB4455-F metallized film capacitor is widely used in power electronic applications. It can be used to construct high voltage filters, AC motor controls, multimedia displays and UPS systems, relay coils, power supplies, transformers, oscillators, windings, and power amplifiers. It is used mostly in power electronics, power engineering, home appliances, industrial machines, automobiles, LED electronics, and so forth. The 38FB4455-F capacitor has a wide operating temperature range and a high temperature coefficient of capacitance. Therefore, this product is also suitable for high-temperature applications.

Working principle:

The 38FB4455-F metallized film capacitor is made of a dielectric film, which is coated with aluminum vapors on both sides. The two sides of the aluminum film sandwich the dielectric film to form a capacitor. When ac current flows through the capacitor, a current is generated, and the electric field induce the polarization effect to the dielectric film, which causes the capacitance to vary with the alternating current. As the electric field in the capacitor increases, the charge stored on the capacitor also increases. At the same time, the capacitance of the capacitor decreases with the increase of temperature.

Since a dielectric film capacitor is constructed from an insulator and metal layers, it has good insulation reliability, high temperature resistance, high capacitance, and low impedance. It also has high current carrying capacity, so it is suitable for power transmission and high-speed frequency conversion. Due to its excellent characteristics, the 38FB4455-F metallized film capacitor can be used in high-power conversion systems and in power system applications.

Conclusion:

The 38FB4455-F metallized film capacitor is a type of film capacitor. It is used in high voltage applications that includes motor controls, power supplies, transformers, and inverters. It has good insulation reliability, high temperature resistance, high capacitance, and low impedance. It also has excellent current carrying capacity, so it is suitable for power transmission and high-speed frequency conversion.