LED light strips are assembled on strip-shaped FPC or PCB hard boards for use in all walks of life. Therefore, it is very nervous to choose the high-quality LED strips when purchasing LED strips. LED lights With two, one is a flexible LED, and the other is an LED hard light bar.
1. The flexible LED strip is assembled by FPC and assembled with patch LEDs, so that the thickness of the product is only the thickness of one coin, which does not occupy space; the wide specification has 30cm, 18 LEDs, 24 LEDs and 50cm long 15 LEDs, 24 LEDs, 30 LEDs, etc. There are also 60cm, 80cm, etc., and different users have different specifications. Moreover, it can be cut at will, or it can be arbitrarily extended without being affected. The FPC material is soft and can be bent, folded and wound freely, and can be moved and stretched in three dimensions without breaking. It can be used in irregular spaces and in small spaces, and because it can be bent and wound arbitrarily, it is appropriate to combine various patterns in the confession decoration.
Second, LED hard light strips are assembled with PCB hard boards. LEDs are assembled with SMD LEDs. They are also assembled with in-line LEDs. Different components are adopted depending on the necessary differences. The strength of hard light strips is better than The force is easy to be firm, and the processing and placement are more convenient; the disadvantage is that it can't be bent freely, and it should not be used as an irregular place. The LED strip for hard light strip has 18 LEDs, 24 LEDs, 30 LEDs, 36 LEDs, There are many specifications of 40 LEDs, etc. There are 18, 24, 36, and 48 different specifications for in-line LEDs. There are front and side, and the sidelights are called Great Wall Light Bars.
How to identify the difference in LED light bar quality for these two differences
Identification 1: Look at the solder joints. The regular LED lights are produced by the manufacturer. The LED strips are manufactured using the SMT chip process and solder paste and reflow soldering process. Therefore, the solder joints on the LED strips are more greasy and the soldering amount is less, and the solder joints extend in an arc shape from the FPC pads to the LED electrodes. [The soldering spot of the LED light strip of the pirate version is not uniform, and a dot is used to wrap the soldering foot. At the same time, there will be different levels of tin tip, which is a typical phenomenon of manual soldering.
Identification 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 closely, it can be seen from the connection between the pad and the FPC. The rolled copper is closely connected with the FPC. As one, it can be bent freely without exhibiting the phenomenon of pad peeling. If the copper plate is excessively bent, the pad will fall off. If the temperature is too high during maintenance, the pad will fall off.