Since LED lighting has a low barrier to entry, many people are involved in this project. However, experienced people still have a way to identify, LED lights produced by the regular manufacturers and the cottage version of the LED light strips (that is, the products produced by the artificial operation in the rental housing) can be seen from the appearance of from. Let's talk about how to identify the LED by eyes
The quality of the light strip:
1, see solder joints. The LED strips produced by the manufacturer of the regular LED strips are produced using the SMT chip process using solder paste and reflow soldering processes. Therefore, the solder joints on the LED lamp strip are relatively smooth and the amount of solder is not large. The solder joints are arc-shaped from the
The FPC pad extends to the LED electrode. On the other hand, the amount of solder in the solder joints of the cottage version of the LED lamp strip is not even, and it is often surrounded by a dot that covers the solder fillet. At the same time, tin spikes appear at different levels. This is a typical phenomenon of manual soldering.
2, see FPC quality. FPC is divided into copper and rolled copper. The copper foil of the copper is protruding. If you look closely, it can be seen from the joint between the pad and the FPC. The rolled copper is closely integrated with the FPC, and can be bent freely without pad dropout. If the copper plate is bent too much, the pad will fall off. If the temperature is too high during repair, the pad will fall off.
3, look at the cleanliness of the LED light strip surface. If the LED light strips produced by the SMT process are used, the surface cleanliness is not good, and no impurities and stains are visible. However, if the cottage version of the LED light strip produced by the hand-welding process is used, no matter how the surface is cleaned, there will be traces of stains and cleaning residues, and there will be residual flux and tin residue on the surface of the FPC.
4, see the packaging. The regular LED strips will be packaged in anti-static roll trays, typically 5 meters in rolls or 10 meters in rolls, and then sealed with anti-static moisture-proof bags. The cottage version of the LED strip will use recycled reel trays because of cost savings, and then there is no anti-static moisture-proof packaging bag. Look carefully at the reel tray to see the traces and scratches left on the exterior when the label is removed.
5, see the label. The regular LED lights will have a printed label on top of the bag and reel, not a printed label. The cottage version of the label is printed, while the specifications and parameters are not uniform.
6, see attachments. The regular LED strips will be accompanied by instructions and lamp strips in the box, and will also be equipped with
LED lights with connectors or decks; and cottage version of the LED lights with the boxes do not have these accessories, because some manufacturers, after all, can still save provinces.