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Identification of nine points of the quality of LED lamps an

Production of lamps and lanterns for stepped into the threshold low, so a lot of people on this project. At present the LED lamps and lanterns, some people said that its quality is difficult to distinguish, but experienced people still have a way to identify, formal manufacturers of LED lamps and LED lamps and lanterns of shanzhai (i.e. all by manual work produced in the rental products) is to be able to visually one soon. Here to talk about how to identify the quality of LED lamps and lanterns with eyes.
1, LED lamps and lanterns USES chips: there are domestic and Taiwan chip, and imported chip, including the United States, Germany, Japan cmos chip, etc.). The chip is different, the price difference is very big. Imported chip prices more expensive, very few people use in the domestic market, the mainly for high-end customers. The current is generally selected high-end customers in Taiwan chip, is one of the best cost performance.
2, LED encapsulation: resin encapsulation and silica gel encapsulation. Resin encapsulation is some cheaper price, because the cooling performance is a bit poor, the other is the same. Silica gel encapsulation of the cooling performance is good, so the price a little expensive than resin encapsulation.
3, color consistency: the current domestic there are a lot of assembly house, large and small combined have thousands of home, of course, also have strong and weak points of the power. There are a lot of small assembly house because there is no testing machine, so either not testing, or outgoing, so it is difficult to guarantee for quality.
4, watch solder joints. Regular LED lamp belt manufacturer of LED lights is to use SMT process, with solder paste and reflow soldering process. Therefore, leds solder joints of the belt is smooth and solder amount not much, solder joint circular arc shaped from the FPC welding plate electrode to LED in extension. Amount of solder solder and shanzhai leds with uneven, is one more dot encase leg, will have different degree of icicles appears at the same time, this is a typical phenomenon of manual welding.
5, FPC quality. FPC divide into two kinds, apply copper and rolling of copper coated copper copper foil is out, scan it can see it from the joint of welded plate and FPC. And rolling of copper is close and FPC is an organic whole repeatedly, can be arbitrarily bent but there will be no solder falls off phenomenon. Apply the coin will appear if there is excessive bending welding plate fall off, repair when the temperature too high can cause pads fall off.
7, the brightness of the LED: different prices different brightness of LED lamps and lanterns, ordinary brightness and highlight LED price comparison. Therefore, when purchasing must know oneself need is what kind of brightness, such ability accurate positioning their products.
8, see label. LED lamps and lanterns of normal bags will be printed labels and coil plate, rather than the printed label. The shanzhai tags are printed, at the same time, do not have a unified specifications and parameters.
9, see the attachment. Regular LED lamps will be included in the inside the enclosed instructions and lamp specification, at the same time also can equipped with leds with connector or booth; And a LED lamps and lanterns of shanzhai boxes would not have these attachments, because they can save a province.
Familiar with more than nine points of LED lamps and lanterns of choose and buy, when to buy LED lamps and lanterns of different brand for the understanding of their price will be more accurate, not just for the sake of bargain and bargain, can achieve the target