Identification Of LED Lamp Products Quality

- Jan 01, 2018 -

1. The flexible LED lamp belt is assembled by FPC to assemble the circuit board, which can be assembled with the strip LED, so that the thickness of the product is only the thickness of one coin, not taking up space; The general specifications are 30cm long 18 LED, 24 LED and 50cm long 15 LED, 24 LED, 30 LED, etc. There are also 60cm, 80cm, etc. Different users have different specifications. And it can be cut off at will and can be extended freely without any influence. The FPC is soft and can be bent, folded and coiled, and can be moved and telescopic in three dimensions without breaking. Suitable for irregular place and small space use, also because it can any bending and winding, suitable for any combination of patterns in advertising decoration.

2. LED hard light bars are made of PCB hardboard for assembling circuit board, LED for assembly, and also for assembly of straight LED LED. Different components are used as needed. The advantages of hard light bars are easy to fix, easy to process and install. The disadvantage is that it cannot be bent arbitrarily, not suitable for irregular places. There are 18 LED, 24 LED, 30 LED, 36 LED, 40 LED, etc. There are 18, 24, 36, and 48 different specifications of the straight LED, with the front side and the side, and the side glow is also called the Great Wall lamp.

1. The solder joints. The LED light bars produced by normal LED lamp manufacturers are manufactured by SMT patch and solder paste and reflow soldering process. Therefore, the solder spots on the LED light bars are smooth and the solder is not much, and the solder points are arcing from the FPC solder to the LED electrode. However, the welding spot of the shanzhai LED lamp is uneven, and the solder is more than one spot to cover the foot. At the same time, there will be different degrees of tin pointed, which is a typical phenomenon of manual welding.

2. Look at the FPC quality. The FPC is divided into copper and calcul copper. The copper foil applied to copper plate is convex, and the closer look can be seen from the joint of the welding disk and FPC. However, the copper is closely connected with FPC, which can be bent without the welding disc. If you bend too much, it will come out of the solder plate, and too high temperature will cause the solder to fall off.

3. Look at the surface cleanliness of LED lights. If the LED lamp is produced by SMT process, the surface is very clean and can't see any impurities and stains. But if use hand soldering process of shanzhai article LED lights, no matter how the surface cleaning, will remain with traces of the stain and cleaning, and will help in FPC surface residual flux and tin slag.

4. Look at the packing. The normal LED lamp will be packed in anti-static coil, usually 5 meters or 10 meters, and then the anti-static proof packing bag will be used to seal it. The shanzhai article LED lights will because of cost savings, and use recycled coil plate, then no anti-static moisture-proof packaging bags, see coil plate can see appearance with clear label and tracks when cut.

5. See the label. The standard LED lamp packaging bag and coil tray will have a printed label, not a printed label. The label of the shanzhai edition is printed, and the specifications and parameters are not uniform.

6. See the attachment. Normal LED lights will include instructions and lamp specifications in the packing box, and will also be equipped with LED light bar connector or card holder. The fake LED light bars have no such accessories in the box, because some manufacturers are still able to save

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