LED high power lamp bead is one of LED beads. Compared with low-power led beads, led high-power beads have higher power, brighter brightness and higher price. The rated current of low-power led beads is 20mA, and the rated current is more than 20mA, which can be considered as high power basically. The general power numbers are: 0.25W, 0.5W, 1W, 3W, 5W, 8W, 10W, etc. The main luminance unit is LM (lumen), and the brightness unit of low power is generally MCD (millicandra, 1cd=1000mcd), that is, the luminous intensity。