How to identify the quality of the LED lamp belt? (two)

How to identify quality

1, see solder.

LED lamp with a regular production of LED lamp belt is the use of SMT patch process, using solder paste and reflow process. As a result, the solder joints on the LED lamp belt are relatively smooth and the amount of solder is not much, and the solder joint is circular arc extending from the FPC pad to the LED electrode. The cottage version of the LED lamp with the solder solder uneven, more than a dot wrapped welding feet, while there will be varying degrees of tin tips, which is a typical phenomenon of manual welding.

2, look at the quality of FPC.

FPC deposited copper and two kinds of copper, copper foil is convex out, look at the words can be seen from the junction of the pad and FPC. The rolled copper is closely connected with the FPC, can be arbitrarily bent without the phenomenon of the pad off. If the copper plate bent too much will appear to fall off the pad, when the temperature is too high maintenance will cause the pad off.

3, look at the cleanliness of the surface with LED lamp.

If the use of SMT technology to produce LED lamp belt, its surface cleanliness is very good, can not see what impurities and stains. However, if the use of hand welding process to produce the cottage version of the LED lamp belt, and its surface no matter how clean, will remain traces of traces of dirt and cleaning, while the surface of the FPC will have flux and tin residue.

4, look at packaging.

The formal LED lamp belt will use anti-static coil packing, usually 5 meters a roll or a volume of 10 meters, and then use the anti-static moisture-proof packaging bag seal. The cottage version of the LED light will be because of the cost savings, and the use of recycled material roll, and then there is no anti static moisture-proof packaging bags, carefully look at the material can be seen when the disk has a clear label to leave traces and scratches.

5, look at the label.

The regular LED lamp with a bag and reel will be printed on the label, rather than the printed label. The cottage version of the label is printed, while the specifications and parameters are not uniform.

6, see annex.

LED lamp with formal will attach instructions and specifications in the lights inside the boxes, also equipped with LED lights with a connector or card holder; not the accessories and LED lamp with copycat version of the box, because some manufacturers still can be saved.