We established our factory for electrolytic Ac capacitors- Dongguan Chuanghui Electronics Factory in June 2004. In October 2012, we established Dongguan Xuansn(CH) Electronic Tech Co., Ltd. to foreign business. In the following, let me introduce the company’s three main capacitors in detail.

1. Aluminum electrolytic capacitors

Aluminum (Aluminium in British English) electrolytic capacitors are polarized electrolytic capacitors whose anode electrode (+) is made of a pure aluminum foil with an etched surface. The aluminum forms a very thin insulating layer of aluminium oxide by anodization that acts as the dielectric of the capacitor. A non-solid electrolyte covers the rough surface of the oxide layer, serving in principle as the second electrode (cathode) (-) of the capacitor. A second aluminum foil called “cathode foil” contacts the electrolyte and serves as the electrical connection to the negative terminal of the capacitor.

2. Film ac capacitors

Thin film ac capacitors are certified by safety regulations, connected to alternating current, and mainly have two electrolytes of polypropylene film and polyester film. Film capacitors, plastic film capacitors, film dielectric capacitors, or polymer film capacitors, generically called “film caps” as well as power film capacitors, are electrical capacitors with an insulating plastic film as the dielectric, sometimes combined with paper as carrier of the electrodes.

3. Ceramic ac capacitors

Ceramic ac capacitors have the same safety certification standards as thin films. Ceramic capacitors are made of materials such as titanium acid barium as well as ceramic. The conductor material in ceramic capacitors is usually metallic. Electrolytic capacitors use two layers of aluminum foil plates that have a paper material between the plates. It is anodized to form a layer of aluminum oxide on one or both sides which acts as the insulator (blocks flow of direct current). To increase the capacity, the foil might also be etched by a chemical process before anodizing.

The main functions of safety capacitors are AC, bypass, jumper, coupling and pulse. Material characteristics are Y5P, NPO, etc.

Finally our mission is to help the customer to save time and cost to get the suitable capacitor that have good quality and good price.