Introduction of SMD LED

Notes for Welding SMD LED

First, clean do not use unknown chemical liquid to clean SMD LED, because unknown chemical liquids may damage SMD LED. When it is necessary to wash it, immerse the 5050 SMD LED in alcohol for less than 1 minute in the normal room temperature, and naturally dried it for 15 minutes, and then you can begin to use it. Second, moisture proof packaging is used to avoid the moisture of product during transportation and storage, SMD LED is packaged with moisture-proof aluminum packaging bags, and there are desiccant and humidity card in the bags, the desiccant mainly control the humidity of packaging bag and humidity card monitors SMD packing humidity. Third, the manual welding process, the soldering iron must be less than 25W, the temperature must be kept below 315 °C and the welding time cannot be more than 2 seconds. Furthermore, soldering iron cannot come into contact with the epoxy part. When finishing the welding, it cannot be packaged until its temperature is below 40 °C after it cool down.

The Features of SMD LED

The emitting principle belongs to a cold light emitting rather than lighting by heating or discharge, so the component life is about 50 to 100 times than the incandescent bulbs, it is about 100,000 hours. It needs no warm lights and the lit response speed is faster than the general electric light (approximately 3 to 400ns), the same with LED diode. Electro-optical conversion efficiency is high and the power consumption is small, it saves about 1/3 to 1/20 of the energy consumption than the ordinary bulb. In addition, it has excellent shock resistance, high reliability and low cost of the system operation. Its size is small and thin, and its weight is light, without the limitation on the shape, so it is easily made into all kinds of applications.

The Purpose of SMD LED Package

SME LED must be packaged, because the package can protect grain and lines, to avoid disconnection, moisture or damaging the grain. It can Increase the light output of the grain, and reduce the proportion of the light of total reflection of the grain surface. It may design the specific light emission angle and brightness analysis. Furthermore, it can fine-tune the color of LED. The package makes it easy to be hold and installed. Last but not the least, it can meet the photoelectric of the various applications and the size requirements. Therefore, we should pay more attention to the package of SMD LED, for it plays an extremely important role in protecting and optimizing the light.

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