Led lamp beads can be roughly divided into three types: in-line low-power specifications, smd patches, and high-power LEDs.

1. The smd patch is generally divided into front light emitting and side light emitting. 3020/3528/5050 These are front-illuminated, and side-illuminated light sources are 1016/1024 and so on.

2. In-line low-power specifications include: straw hat/steel helmet, round head, tombstone type, bullet head, flat head, concave, oval, (3/5/flat head/bread type) piranha, etc.

3. High-power LEDs do not belong to the patch category, because the power and current are different, and the photoelectric parameters are very different. Ordinary smd patch single high-power LED light source without heat dissipation base (usually a hexagonal aluminum base) has not much difference in appearance. Patches are fundamentally different in the use environment, effects, conditions, etc.