Matte tin connector Features: Exterior is foggy, crystallization rough, easy to leave fingerprints, general thickness 5um, 8um, usb connector or even higher, ranging from plating thickness depending on its use. Weldability and corrosion properties of tin whiskers brighter than matte tin tin to be good, but afraid of scratches, fingerprints and other fear. Connector bright tin Features: Exterior is bright, relatively good-looking, relatively smooth, fine crystal, not easy to leave fingerprints, general thickness 3um more. General purely functional pieces will choose matte tin, but belong to the appearance of pieces need to solder will choose bright tin. Connection does not eat tin is why? How to deal with? If you exclude the welding process issues, such as solder temperature, suitable flux, solder over time, do not eat tin terminal contacts may be caused by surface oxidation or unclean connector, pay attention to open the package should be used as soon as possible to keep dry storage environment. There is a bad product coating, substrate exposed, can also cause eating tin. Should first determine what causes. If the problem is the process, it is necessary to improve the process, for example, choose a suitable flux, solder temperature setting corresponds to regulate the furnace time (reflow) connectors or chain speed (wave), etc; if it is dirty pin you need targeted cleaning; if it is oxidized issue (basically no solder to eat, or even if there is no infiltration of state tin) more trouble, and now there is no good reducing agent to remove the oxide layer connector manufacturers , you may want to consider scrap processing, in practice, in the case of small quantities, some companies and then scrape the oxide layer welding methods, but the reliability of this approach has not been verified. Electronic connectors, electronic products factory Song Chong-wook (certified), Tangxia connector from Dongguan Shijie Xu Song Chong electronic products factory provided. Dongguan Shijie Xu Song Chong Electronic Products Factory (chuangxs.1688.com) (www.chuangxs.1688.com) is Dongguan, connectors leaders, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness policy, and satisfy customer needs. Song Chong-wook in electronic products plant leadership with the staff warmly welcome all inquiries negotiations to create electronic products factory Song Chong-wook a better future.