With the continuous development of society, the LED lights with the lighting of the city can replace the neon lights, play an important role, purchase led lights, while LED lights with the production of many people entered the low-threshold, launched this project. But those with experience have a way to identify the regular manufacturers to produce LED lights and LED lights of the cottage version of the band (ie depends on manual work products produced in the rental) is a glance from the appearance of out. LED high bay The following talk about with eyes to identify the LED lights with the quality of good or bad:
1, see the solder joints. Regular LED lights with manufacturers to produce LED lights with SMT chip technology, purchase led lights, the production of solder paste and reflow soldering processes. Therefore, the LED lights to bring the solder joint is relatively smooth and the amount of solder will not solder cylindrical arc-shaped LED electrode extends from the FPC pad to. Cottage version of LED lights with solder joints is uneven, mostly a dot wrap welding foot, and have varying degrees of tin tip, which is a typical phenomenon of manual welding.
2, see FPC quality. FPC sub copper and rolled copper two Bonded Copper copper foil is projecting the look of the words from the pad to be seen with the FPC connections.Rolled copper is close and FPC as a single entity, purchase led lights, can be bent without the pad off phenomenon. Bonded Copper bending too much there will be pads off, the temperature is too high maintenance, can also cause the pad off.
3, see the LED light with the surface cleanliness. If the SMT production, LED lights, the cleanliness of its surface is very good, purchase led lights, do not see any impurities and stains. But if the cottage version of LED lights with the production of hand-welding process, the surface no matter how clean, will be residual traces of stains and cleaning the surface of the FPC will be flux and tin slag residue.