How to identify the best led flexible strip light?(2)

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Continued with the former article. The fourth tip is to look joints. LED lights in regular production is manufactured using SMT chip technology by China LED stripe light supplier, with solder paste and reflow process of production. Therefore, LED lights to bring the amount of solder joints is smooth and no more, to spot an arcuate LED electrode extends from the pad at FPC. The amount of solder joints Knock LED lights with uneven, mostly a dot wrap the fillet, while there will be varying degrees of icicles appear, this is typical of manual welding. The next point is to look FPC quality. best led flexible strip light,usually include FPC sub-two copper and copper rolling, Bonded Copper foil is projecting, and then look at the connection from the FPC pad see it. And rolled copper are closely connected and FPC as a whole, can be bent and will not appear pads off phenomenon. Bonded Copper occurs if bent too much off the pad when the temperature is too high will cause the maintenance pad off. The last is looking LED light strip surface cleanliness when you want to do a reliable and safety led strip light wholesale. If the use of SMT technology, the LED lights, surface cleanliness is very good, do not see any impurities and stains. However, if the production of hand-welding process Knock 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.