ECQ-B1H394JF

Film Capacitors And ECQ-B1H394JF Application Field And Working Principle

Introduction

Film capacitors are one type of capacitors which use plastics for insulating film, as the vital part of the capacitors, inside them commonly are aluminum foil and polystyrene, polypropylene, Teflon, etc. They have relatively low dissipation factor, excellent temperature-resistance and extremely high dielectric breakdown voltage. With all these special features, film capacitors can be used in many electronic equipment and circuit boards. In this article, we will discuss the characteristics and application field of a specific model ECQ-B1H394JF.

Structure of Film Capacitors

Generally speaking, film capacitors are mainly composed of three parts: plastic film which is used as dielectric, aluminum foil as the electrode and two metal foil which are used for electrical connection and fixed-box. To prevent short-circuit and increase the capacitance, two plastic films are placed like the sandwich with aluminum foil in between them. Prolonged about the structures of film capacitors, we can distinguished them into two kinds by their shapes: cylindrical and order-disc. The former has better RF signal return loss than the latter, and higher Q value, so it can achieve better self-resonant capability.

Features of Film Capacitors

In comparison with other types of capacitors, film capacitors are quite popular due to the abundant features. First of all, film capacitors have wide working temperature rang and higher working voltage than other types of capacitors such as electrolytic capacitors, ceramic capacitors, tantalum capacitors. Additionally, the film capacitors have low dissipation factor, small size and excellent mechanical, electical and thermal stability. Therefore, film capacitors are wide used in various fields such as switching power supplies, home appliances, computers and telecommunication equipments.

Application Field of ECQ-B1H394JF

ECQ-B1H394JF is a film capacitor designed by Panasonic, with a polyester dielectric and lead-free terminals. The capacitor has high frequency characteristics, good temperature characteristics, and excellent adhesion of the electrodes. It is ideal for capacitive loads such as power supplies, home appliances, telecommunication equipments, reflow soldering and wave soldering, high frequency and stiffness lines and fine-scale SMD circuit boards and so on.

Working Principle of ECQ-B1H394JF

ECQ-B1H394JF, like other types of film capacitors, works by storing energy in the electric field created by the electric charges separated across a dielectric. Since the dielectric used is polyester, the capacitor can provide improved flexibility, adhesion and good temperature characteristics. Moreover, the terminal electrodes are made of lead-free terminals, which makes it environmental friendly.

Conclusion

Film capacitors are widely used in many different fields due to their special features, and ECQ-B1H394JF is one model manufactured by Panasonic. It is designed with a specific dielectric material, lead-free terminals, and has special features such as good temperature characteristics. Its main applications include power supplies, home appliances, reflow soldering and wave soldering, high frequency and stiffness lines and fine-scale SMD circuit boards, etc.