How to identify the material difference of LED light strip

LED light strip is the LED light assembled on the ribbon FPC or PCB board, throughout all walks of life. So in the procurement of LED light strip to be able to choose high-quality LED light strip is very nervous. LED lights with two kinds, one is a flexible LED, the other is a hard LED light strip.

First, the flexible LED lamp belt adopts FPC as the assembly circuit board, and uses the patch LED to assemble, so that the thickness of the product is only the thickness of a coin, which does not take up space; Extensive 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 cut at will, can also be extended arbitrarily and the light is not affected. The soft material of FPC can be bent, folded and wound at will, and can be moved and expanded in 3D space without breaking. Suitable for use in irregular places and narrow Spaces, but also because of its can be arbitrary bending and winding, suitable for any combination of all kinds of patterns in the advertisement decoration.

Two, LED hard light strip is made of PCB hard board assembly circuit board, LED useful patch LED assembly, but also useful in-line LED assembly, depending on the necessary differences and adopt different components. The advantage of hard lamp strip is that it is easy and firm, and the processing and placement are more convenient than the force; The disadvantage is that can not be bent at will, not when the irregular place. There are 18 LED, 24 LED, 30 LED, 36 LED, 40 LED and many other specifications; There are 18 leds, 24 leds, 36 leds, 48 leds and other different specifications, there are positive and side, side light is also called the Great Wall lamp.

How to identify the quality difference of LED strip according to these two differences

Ldentification one: look at the solder joint. The normal LED light belt manufacturers produced LED light belt is adopted SMT patch process, with solder paste and reflow welding process production. Therefore, the solder joint on the LED strip is smooth and the amount of solder is not much. The solder joint extends from the FPC pad to the LED electrode in an arc shape. The amount of solder in the solder joint of the stolen cave version LED lamp belt is not average, which is mostly a dot covering the solder foot, and there will be different levels of tin tip, which is a model phenomenon of manual welding.

Ldentification two: look at FPC quality. FPC is divided into copper and calendering copper two, copper plate copper foil is convex, a close look can be seen from the weld pad and FPC connection. The calendered copper is closely connected with FPC, and can be bent freely without showing the phenomenon of solder pad falling off. If the copper plate is bent too much, the solder pad will fall off. If the temperature is too high during maintenance, the solder pad will fall off.

Ldentification three: look at the cleanliness of the LED light belt overview. If the LED tape produced by SMT process is adopted, its general cleanliness is very good, no impurities and stains can be seen. However, if the hand welding process is adopted to produce the pirate version of LED lamp belt, its general situation no matter how to clean, the city residual stains and cleaning traces, at the same time in the FPC profile will help flux and tin residue residue.

Ldentification four: look at the packaging. The normal LED light belt will adopt anti-static coil packaging, generally 5 meters a roll is about 10 meters a roll, and then the surface of the anti-static moisture-proof bag seal. And the stolen cave version of the LED light belt will be because of cost savings, and accept the acceptance of the coil plate, and then there is no anti-static moisture-proof bag, carefully look at the coil plate can see the appearance of the label when leaving traces and scratches.

Recognition five: Look at the label. Regular LED tape packaging bags and rolls have printed labels on them, rather than printed labels. And the pirate cave version of the label is printed, and the specifications and parameters are not uniform.

Ldentification six: Look at the attachment. The normal LED light belt will be enclosed in the packaging box with instructions and specifications of the light belt, and will also be equipped with LED light belt connector is probably a booth; And the pirate cave version of the LED light belt packaging box is not these attachments, because some manufacturers are still able to save.