LED’usage recomendations
As a single led and as multiple led, we are defined by IF(range is 10mA-20mA) on led spe sheet. The LED short circuit currents of bulk electric are very high. it’s Mable destroy the LED when restart the led initially.The user must be carefully that designed to avoid over voltage (over current) for a start, keeping the color and brightness consistency in 20 mA .
That said, To obtain uniformity of brightness and color, should use the same current and same batches. Because of the different batches of LED Have different performance characteristics. It’s to cause differences in brightness .