How to identify quality LED lights?
1, a flexible LED lights with: This type of LED lights is done using FPC board assembly, the assembly with SMD LED, the thickness of the product is only the thickness of a coin, not the space; common specifications are 30cm long 18 pcs LED, 24 pcs LED and 50cm long; 15 LED,30 pcs LED and so on. There are 60cm, 80cm and so on, different users have different specifications. And can be arbitrarily cut to be any extension of the light-emitting unaffected. The FPC material is soft, can be bent, folded, winding, three-dimensional space can move freely and stretch without breaking. Suitable for irregular places and cramped places, but also because you can arbitrarily curved and winding, suitable for any combination of a variety of patterns in advertising decoration.
2, LED light bar is made with hard board PCB circuit board assembly, LED SMD LED helpful for assembly, but also useful for assembly-line LED, depending on the needs of different and use different elements. Advantages rigid strip is relatively easily fixed, processing and installation are relatively easy; the disadvantage is not free to bend, not suitable for irregular areas. With SMD LED light bar has 18 LED, 40 pcs LED and other good variety of specifications; with line LED have 18, 24, 36, 48 different specifications, there is also a positive side, the side of glowing lights, also known as the Great Wall.
How to choose LED lights?
Recommended that consumers in the purchase of LED lights, it is best first to distinguish it in the end is a flexible or rigid strip lights products, to know the different types of lights with the product, its quality is not the same, not the same length, soft light of not Like using the installation environment is not the same, it advised consumers to better select some regular brands for product purchase more assured.
Look at packaging. Regular LED lights will use anti-static roll disc packaging, usually 5 m or 10 m roll of a roll, and then the outside and then use anti-static moisture-proof bag sealed. The cottage version of the LED lights because of the cost savings, while the use of recycled roll tray, then there is no anti-static moisture-proof bags, look carefully roll pan can see the appearance of a clear label when traces and scratches.
Look at the label. Regular LED lights with bags and roll above the disk will have a printed label instead of printing labels. The cottage version of the label is printed, as well as specifications and parameters are not unified.
See attachment. Regular LED lights will be accompanied by instructions for use inside the box and lights with specifications, while also equipped with LED lights with connector or a deck; the cottage version of the LED lights with packing box is not these attachments, because They are able to save the province.
Look joints. LED lights with LED lights with the regular production of the manufacturer is to use SMT chip technology, with solder paste and reflow soldering process of production. Thus, LED lights bring smoother solder joints and solder amount not more, to the LED solder arcuate electrode pad extending from at FPC. The amount of solder joints cottage version of LED lights with uneven, mostly a dot wrap fillet, while there will be varying degrees of icicles appear, this is typical of manual welding.
Look FPC quality. FPC sub-two copper and rolled copper, copper-clad copper foil is projecting, and then look at the FPC from the connector pads to see it. And rolled copper is closely and FPC as a single entity that can be bent and will not appear pad off phenomenon. Bonded Copper occurs if bent too much off the pad, maintenance temperature is too high will cause the pad off.
Look LED lights belt surface cleanliness. If using SMT technology, the LED lights, surface cleanliness is very good, I do not see any impurities and stains. But if the hand-welding process to produce copycat version of LED lights, no matter how clean the surface, there will be residual traces of dirt and cleaning, while there remains in flux and dross FPC surface.
