What is a SMD LED？

SMD LED (Surface-mounted devices) is a led chip mounted on the surface of a PCB (printed circuit board). Its light-emitting principle is to pass current through compound semiconductors, and through the combination of electrons and holes, the excess energy will be released in the form of light to achieve the effect of light.They are produced using Surface Mount Technology (SMT).

Features

1. The principle of light emission is cold light emission, not by heating or discharge, so the life of the element is about 50~100 times longer than that of the tungsten bulb, about 100,000 hours.
2. No warm-up time is required, and the lighting response speed is faster than ordinary lights (about 3 ~ 400ns).
3. High electro-optical conversion efficiency and low power consumption, saving about 1/3 ~ 1/20 of energy consumption compared with light bulbs.
4. Good shock resistance, high reliability, and low system operation cost.
5. Easy to be small, thin, lightweight, without shape restrictions, and easy to make into various applications.
6. In different shapes, and designs,have a larger beam angle,easy to install.

Advantage

SMD LEDs are attached to the surface of circuit boards, suitable for SMT processing, and can be reflow soldered. SMD LEDs solve problems such as brightness, viewing angle, flatness, reliability, and consistency. Compared with other packaging devices, it It has the advantages of strong vibration resistance, low solder joint defect rate, and good high-frequency characteristics.

It packs more LED chips in a smaller area, uses lighter PCB and reflective layer materials, and shows that the reflective layer needs to be filled. There is less epoxy resin. By removing the heavy carbon steel material pins and reducing the size, the weight of the product can be easily reduced by half.

The volume and weight are only about 1/10 of the traditional plug-in components. After adopting the SMD package, The volume of electronic products is reduced by 40% to 60%, and the weight is reduced by 60% to 80%, which finally makes the application more perfect.