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Identify The Quality Of LED Lights
- Oct 16, 2017 -

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. Regular LED headlights manufacturers produce LED automotive headlamps using SMT patch technology, produced by solder paste and reflow process. Therefore, the solder joint on the LED headlamp is smoother and the solder flux is not much. The solder joint extends from the FPC pad to the LED electrode in an arc shape. However, the solder joints of the LED car headlamps are uneven, which often appear as a dot to weld the feet. At the same time, there are different degrees of tin tip, which is a typical phenomenon of manual welding.

3. Look at the packing. Regular LED car headlamps will use anti-static coil packaging, generally 5 meters or 10 meters roll, and then outside the use of anti-static moisture-proof packaging bags sealed. And the cottage version of the LED car headlights will be due to cost savings, and the use of recycled coil tray, and then there is no anti-static moisture-proof packaging bag, a careful look at the reel can see the appearance of cleaning labels left traces and scratches.

4, look at the LED car headlight surface cleanliness. If the LED automobile headlamps produced by SMT process, its surface cleanliness is very good, can not see what impurities and stains. But if you use hand welding process production of cottage LED headlamps, no matter how to clean the surface, there will be traces of stains and cleaning, and at the FPC surface will have soldering flux and tin residue.

5, look at the label. Regular LED car headlights, packaging bags and reel, there will be printed labels, rather than printed labels. The Shanzhai label is printed, and the specifications and parameters are not uniform.


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