LED light source is divided into small power LED light source (direct plug, SMD chip device) and large power LED light source.
Straight plug type small power specifications are: straw hat/helmet, round head, recessed, oval, tombstone type (2*3*4) bullet head, flat head, (3/5/ flat head/bread type) piranha and so on.
SMD patch is generally divided into (3020/3528/5050 these are the front light) /1016/1024 and so on these are the side light source.
High-power leds cannot be classified into the patch series. Their power and current usage are all different, and the photoelectric parameters vary greatly.
A single high-power LED light source without heat dissipation base (generally hexagonal aluminum base), its appearance is not too different from the ordinary patch, high-power LED light source is round, the packaging method is basically the same as SMD patch, but with SMD patch in the conditions of use/environment/effect are essentially different.