At this stage, LED spotlights mainly replace traditional tungsten halogen lamps. Therefore, the external dimensions are based on the IEC 60630 standard, and the lamp holder is based on the IEC60061-1 standard.
According to traditional spotlights, LED spotlights mainly include MR16, PAR16, PAR20, PAR30, and PAR38. Among them, MR16 usually uses GU5.3 lamp holder; PAR16 mainly uses GU10, E26 (America)/E27 (Europe and China), E14 lamp holder; PAR20/PA30/PAR38 mainly uses E26, E27 lamp holder.