Views: 0 Author: Site Editor Publish Time: 2025-09-11 Origin: Site
Film capacitors use metal foil as electrodes, overlapping it with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate at both ends and then winding it into a cylindrical structure.
Theoretically, the production costs of film capacitors of the same model and size will vary, but the differences are not very significant. Why do some manufacturers offer film capacitors at particularly low prices? The most likely reason is that they are cutting corners. What are the dangers of using inferior film capacitors?
Low-quality film capacitors are manufactured at low cost but are of poor quality, with low insulation resistance, high dielectric loss, and poor resistance to high temperatures and pressures. When exposed to high temperatures, low-quality film capacitors have a shorter lifespan and are easily damaged. Using them in electronic products can cause problems, shortening their lifespan and, in severe cases, exploding and causing fires.
Due to issues with raw materials and manufacturing processes, some inexperienced and poorly equipped factories can lead to hidden dangers in film capacitors. These problems can easily lead to dielectric damage, mechanical damage, and poor cleanliness during production, making these film capacitors inferior. These problems can result in short lifespans and easy breakdown.
How can I avoid buying inferior film capacitors?
Try not to choose film capacitors with neutral printing: the so-called neutral printing means that the brand is not even printed on the surface of the capacitor. This type of capacitor is mostly produced by small factories and is mainly supplied to traders without factories. Many traders do not have their own brands and use ultra-low prices to seize the market. Therefore, the proportion of inferior film capacitors with neutral printing is higher. It is recommended to buy branded film capacitors like Anhui SaiFu.
As long as you choose film capacitors with a good brand and reputation, the quality is guaranteed, they have a long life and excellent stability.
