Identify the quality of the LED strip from the appearance:
Light bar view
1. Look at the solder joints. The LED strips produced by the regular LED strip manufacturers are produced by the SMT chip process using solder paste and reflow soldering processes. Therefore, the solder joints on the LED strips are relatively smooth and the amount of solder is not much, and the solder joints extend in an arc shape from the FPC pads to the LED electrodes. The soldering spot of the LED version of the LED version of the cottage is not uniform, and a dot is used to wrap the soldering foot. At the same time, there are different degrees of tin tip, which is a typical phenomenon of manual soldering.
2. Look at the quality of FPC. FPC is divided into copper and rolled copper. The copper foil of the copper plate is convex. If you look at it, you can see it from the connection between the pad and the FPC. The rolled copper is closely integrated with the FPC and can be bent freely without peeling off the pad. If the copper plate is bent too much, the pad will fall off. If the temperature is too high during maintenance, the pad will fall off.
3. Look at the cleanliness of the surface of the LED strip. If the LED strips produced by the SMT process are clean, the surface is very clean and there are no impurities or stains. However, if the cottage version of the LED strip produced by the hand soldering process, the surface will remain stained and cleaned regardless of how it is cleaned, and flux and tin residue will remain on the surface of the FPC.
4. Look at the packaging. Regular LED strips will be packaged in anti-static coils, usually 5 meters or 10 meters, and then sealed with anti-static moisture-proof bags. The cottage version of the LED light bar will use the recycling coil tray because of cost savings, and then there is no anti-static moisture-proof packaging bag, carefully look at the coil tray to see the traces and scratches left when the label is removed.
5, look at the label. Regular LED strips and reels will have printed labels on them instead of printed labels. The label of the cottage version is printed, and the specifications and parameters are not uniform.
6, see the attachment. Regular LED strips will be accompanied by instructions for use and light bar specifications, as well as LED strip connectors or decks; the cottage version of the LED strip box does not have these accessories because Some manufacturers can still save the province after all.
Light bar lighting attention
1. The requirements for brightness are different for different occasions and different products. For example, if the LED jewellery counter lamp is placed in some large shopping malls, we will be attractive if the brightness is higher, and the decorative effect is also divided into different products such as LED spotlights and LED colorful strips.
2, anti-static ability: anti-static ability anti-static ability of the LED, long life, but the price will be higher. Generally, antistatic is preferably higher than 700V.
3. LEDs with the same wavelength and color temperature will have the same color. This large-scale combination of lamps is especially important. Do not create too much chromatic aberration in the same fixture.
4. Leakage current is the current when the LED is reversely conducting. We recommend LED products with a small leakage current.
5, waterproof ability, for outdoor and indoor LED lights are not the same.
6, LED lighting angle has a great impact on LED lamps, the requirements for different lamps are very large, like LED fluorescent lamps we recommend to use 140-170 degrees. Others are not explained in detail here.
7, LED chips determine the quality of LED core, LED chip brands, there are foreign brands (such as CREE , Nichia, etc.), there are also Taiwan (such as Guangjiao, Jingyuan, etc.). The price difference between different brands is also very far.
8, LED chip size also determines the quality and brightness of the LED, we also try to choose a larger chip when choosing, but the price is also different.
December 17, 2020