Hi guys it’s been a while,
The typical wave lengths are +/-5nm for 5mm and +/-10nm for high power, if this is not what you are finding then the LEDs were not sorted properly and the source maybe suspect.
Also High power is not the only way to go, the heat issues with High power are the most acute as the high power is exactly what it sounds like a high power device on a chip that isn't that much bigger relatively. So the heat has to be dissipated more efficiently like by using an aluminium PCB and not a plastic one. High power are probably more efficient, but right now care must be taken when thinking about how to use them as its very probable that if you don't know what you are doing they will burn out or the wave lengths will shift, often quite quickly. As the products mature they will however become the best devices to use.
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