Zhejiang Jieshitai Electrical Co.,Ltd
Puhu Industrial Zone, Shifan, Yueqing Zhejiang, China
1, look at the solder spot. The regular LED lamp belt production of LED lamp belt is the use of SMT patch process, with solder paste and reflow welding process production. Therefore, LED lamp belt on the solder spot is relatively smooth, and the amount of solder is not much, the solder joint is circular, from the FPC pad to the LED electrode extension. And the Shanzhai version of the LED lamp belt welding spot soldering tin is not uniform, more than a dot wrapped in the solder foot.
At the same time there will be different degrees of tin tip appearance, which is a typical phenomenon of manual welding.
2, look at the FPC quality. The FPC is divided into two kinds of copper and calendering copper, copper foil coated copper is convex out, a closer look can be seen from the connection between the pad and the FPC. and Calendering copper is closely and FPC connected as one, can be arbitrarily bent without the appearance of pad shedding phenomenon.
Copper plate if bending too much will appear pad shedding, maintenance when the temperature is too high will also cause the pad to fall off.
3. Look at the cleanliness of the LED lamp belt surface. If the use of SMT process production of LED light belt, its surface cleanliness is very good, can not see any impurities and stains.
However, if the use of hand welding process production of Shanzhai version of the LED lamp belt, its surface no matter how to clean, will be residual stains and cleaning traces, at the same time on the FPC surface will be helpful flux and tin slag residue.
4, look at the packaging. Regular LED lamp belt will use anti-static coil plate packaging, generally 5.1-meter rolls or 10.1-meter rolls, and then outside the use of anti-static, moisture-proof packaging bag seal.
and Shanzhai version of the LED lamp belt due to cost savings, and the use of recycled reel disk, no anti-static, moisture-proof packaging bags, carefully look at the reel plate, can see the appearance of the removal of labels left traces and scratches.
5, look at the label. Regular LED lights with bags and reel plates will have printed labels instead of printed labels.
And the Shanzhai version of the label is printed, at the same time specifications, parameters are not uniform.
6, look at the attachment.
The regular LED light belt will be equipped with instructions and lamp belt specifications in the box, as well as LED light belt connectors or cards, while the Shanzhai version of the LED lamp belt box does not have these accessories, because some manufacturers can save the province after all.