The production of LED lights is due to its lower threshold, so many people do this project. But people have experience still have a way to identify, the regular manufacturers of LED lights and copycat version of the LED lamp (i.e. in the rental by manual operation of the products produced) is a can come out from the appearance of the eye. Here's a detailed discussion on how to identify the quality of LED headlights by eyes:
1, look at the quality of FPC. FPC is divided into two kinds of copper and rolled copper, copper foil is protruding out of the punch, careful look, can be seen from the welding pad and FPC connection. The rolled copper is closely connected with FPC, and can be bent arbitrarily without the phenomenon of pad falling off. If the copper plate is bent too much, the pad will fall off. When the temperature is too high, it will cause the pad to fall off.
2, look at solder joints. The LED light produced by the regular LED lamp manufacturer is produced by SMT coating process, which is produced by solder paste and reflow soldering process. Therefore, the solder joint on the LED lamp is smoother and the solder volume is not too much. The solder joint extends from the FPC pad to the LED electrode in an arc shape. However, the solder joints of the LED lamps are not uniform, which often appear as a dot to weld the feet, and there are different degrees of tin tip, which is a typical phenomenon of manual welding.
3. Look at the packing. Regular LED lights will use anti-static packaging, and then use the anti static moisture-proof packaging bag seal. And the cottage version of the LED lights will save costs, there is no anti-static moisture-proof bag, carefully look at the appearance, you can see the appearance of cleaning labels left traces and scratches.
4. Look at the cleanliness of the LED headlight surface. If the LED lamp produced by SMT process, its surface cleanliness is very good, can not see what impurities and stains. However, if you use hand soldering process to produce cottage LED headlights, no matter how to clean its surface, there will be traces of stains and cleaning, and at the same time, there will be flux and tin residue on the surface of FPC.
5, look at the lamp. Lamp manufacturers LED normal and high quality the beads will be better, such as American CREE, German OSRAM, Samsung, Taiwan Jingyuan, world-class authority brand LED lamp beads, to ensure high brightness, low light sorrow, long life. Because it can be a real guarantee of the quality of the products, and the LED lamp manufacturers will use a copycat version of low quality beads to save cost.
6, see annex. Regular LED lights will attach the instructions and specifications in the lights inside the boxes, also equipped with LED lamp connector or card holder; and the LED lamp box is not in the copycat version of these accessories, because some manufacturers still can be saved.
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