Ceramic Capacitors VS Safety Y Capacitors

There are many kinds of capacitors in electronic components. And some of them look similar. People who are not familiar with capacitors can easily make mistakes when purchasing them. Like ceramic capacitors and safety Y capacitors, they are similar in appearance, but there are still some differences in performance.

Safety Y capacitor is a kind of safety capacitor. When the external power supply is cut off, it will discharge quickly, and people will not feel electric shock when touching it. Even if the safety Y capacitor fails, it will not cause electric shock and endanger the human body. The shape is disc, and the color is blue.

Ceramic capacitor is made of high dielectric constant ceramics extruded into the shape of circular tubes or discs as a dielectric, coated with a metal film (usually silver) and sintered at high temperature to form electrodes, and then in the electrodes the lead wire is welded on top, and the surface is coated with protective enamel, or encapsulated with epoxy resin. The shape is disc-shaped, mostly blue, but also yellow. Different ceramic materials have different properties.

How to distinguish between ceramic capacitors and safety capacitors? It can be distinguished from the appearance of the printing: the printing of the safety Y capacitor has the safety certification of CQC, UL, ENEC, KC and other countries, while the ceramic capacitor does not need the safety certification.

Distinguish from use: If you want to use it in circuits such as filtering, bypassing, coupling and blocking DC, it is recommended that you should purchase ceramic capacitors. If you want to use it between the zero line and the ground, between the live line and the ground, and common mode filtering, it is recommended that you buy a safety Y capacitor.

Of course, it is necessary to choose the appropriate model and size according to the application. If you're not sure about the selection, you can always turn to a professional manufacturer for help. Dongguan Zhixu Electronic Co., Ltd. (also JYH HSU(JEC)) has engaged in the electronic component industry for many years, and our technical engineers can help you solve related problems. Don't hesitate to contact us if you have questions or need samples.