Is it okay if there are scratches on the surface of a film capacitor

Film capacitors are capacitors constructed by overlapping metal foil as electrodes with plastic films such as polyethylene, polypropylene, polystyrene, or polycarbonate at both ends and then winding them into a cylindrical shape. Film capacitors play an important role in many electronic products due to their advantages such as high insulation resistance, wide capacitance range, good stability, and high voltage resistance.

With people's living standards improving, it's no longer difficult to follow celebrities, attend concerts, and music festivals. The exciting atmosphere at concerts and music festivals is related to the sound systems used. The better the sound quality of the speakers, the more pleasant the sound will be and the less noise it will produce. This is also related to film capacitors.

The better the quality of the film capacitor, the more pleasant the sound produced by the speaker. If a poor-quality film capacitor is used, its performance will be unstable and it will fail to play its important role. Therefore, the better the quality of the film capacitor, the better its performance. So, is it normal for a film capacitor to have scratches on its surface? Is it a problem?

Scratches on the surface of a film capacitor are not normal. As an important component of electronic circuits, the surface of a film capacitor should be smooth, free of impurities and scratches to ensure stable and reliable performance.

Scratches can occur due to improper operation during production, equipment malfunction, or material issues. Scratches on the surface of film capacitors can damage the capacitor's insulation layer, leading to performance problems such as decreased capacitance, increased leakage current, or short circuits. Furthermore, surface scratches on film capacitors can accelerate the aging process, shortening their service life.

Generally speaking, legitimate factories with production qualifications will screen out and set aside any substandard or defective film capacitors during production, and will not sell these substandard or defective film capacitors together with normal, high-quality film capacitors.

        For example, Anhui Safe Electronics strictly adheres to Chinese production standards in manufacturing components such as film capacitors, resulting in high output and a high yield rate. They employ specialized instruments to distinguish between good and defective products. Furthermore, they hold multiple international certifications, ensuring stable and reliable performance.