How to identify LED strip quality differences
In the industry where the fish is mixed with fish, how to identify the quality of LED light bar is the most concerned about the needs of users, light Puda as LED light industry "leader" with professional knowledge to teach them how to quickly and accurately , Quickly identify the quality of LED light bar.
First, the flexible LED lights with FPC to do the assembly circuit board, with the SMD LED assembly, so that the thickness of the product is only a coin thickness, no space; wide specifications are 30cm long 18 LED, 24 LED and 50cm long 15 LED, 24 LED, 30 LED and so on. There are 60cm, 80cm, etc., different users have different specifications. And can be arbitrarily cut, can also be arbitrarily extended and light is not affected. The FPC material is soft, can be bent, folded, winding, can be moved in three-dimensional space and telescopic and not broken. Appropriate in the irregular place and space for the use of small places, but also because of its arbitrary bending and winding, properly in the confession of any combination of various patterns.
Second, the LED hard light bar is to use PCB hard board to do assembly circuit board, LED useful patch LED assembly, but also useful in-line LED assembly, depending on the necessary differences and the use of different components. The light is easy to solid, processing and placement are more convenient; shortcomings are not free to bend, not when the rules of the premises. Hard light with patch LED has 18 LED, 24 LED, 30 LED, 36 LED, 40 LED, etc., with a number of specifications; with straight-through LED has 18, 24, 36, 48 and other different specifications, there are positive side, side light, also known as the Great Wall light bar.
How to identify the differences in the quality of LED light bars for these two differences
Identification of a: see the solder joints. Formal LED lights with a manufacturer of LED lights produced by the SMT chip is used, with solder paste and reflow process produced. Therefore, the LED lights on the solder joints than the creamy and the amount of solder will not be more, the solder joint was arc-like from the FPC pad to the LED electrode extension. [And cave version of the LED lights with the solder joint solder is not even, mostly a dot wrapped around the foot, while there will be different levels of tin tip show, which is a typical example of manual welding.
Identification of two: see FPC quality. FPC divided into copper and rolling copper two, copper clad copper foil is protruding, look at the point of view from the connection with the FPC to see, while the rolling copper is close and FPC even As a whole, you can bend any bend and will not show the phenomenon of falling off the tape if the over-bending will appear on the pad off the tape, the maintenance of high temperature will also cause the pad off the tape.
Identification of three: look at the LED lights with the profile of the degree of cleanliness. If the adoption of SMT production process LED lights, the profile of the cleanliness is very good, do not see any impurities and stains, but if the use of hand welding process produced cave version LED lights with its profile no matter how cleaning, the city remains stains and cleaning of the traces, while in the FPC profile will have flux and tin residue residue.
The formal LED light band will adopt the anti-static coil tray packaging, usually 5 meters a volume is about 10 meters a volume, and then the surface and then adopt the anti-static moisture-proof packaging bag sealed. And the cave version of the LED lights will be because of the cost savings, and adopted to take over the coil, and then there is no anti-static moisture-proof packaging bags, carefully read the coil to see the appearance of the label to leave the mark and scratches left.
Identify five: look at the label. Formal LED lights with a bag and roll tray above the city has a printed label instead of a printed label. And the cave version of the label is printed, while the specifications and parameters are not uniform.
Identification of six: see accessories. Regular LED lights will be attached to the inside of the box with instructions and lamp specifications, but also with LED lights with connectors is probably a deck; and the cave version of the LED lights with crates There is no such accessories, because some manufacturers still can save the province.