SMD stands for Surface Mounted Devices. SMD LEDs use Surface-mount technology (SMT) to mount LED chips on printed circuit boards (PCB). These LEDs are recent, resilient, efficient and have high-reliability performance, they ideally suited to be used in general purpose LED lighting solutions. 

Some common SMDs types are SMD 3528 ( 3528 refers to the size of the lamp beads is 3.5mm×2.8mm ), 5050, 2835, 5730 and 3014.

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