The problem isn’t the LED itself. The problem is engineers that read the datasheets where it shows which forward current they need. What they forget to think about is that the recommended forward current is for max brightness, so they slap whichever resistor they need, and never give it another thought.
Whenever I design a LED circuit that is only used as an indicator, I always make it 10% or less than recommended, because I do not need to burn away my retina when I test the boards.
Of course that’s smart design. You’d think that would be something that becomes immediately obvious when the very first prototype PCB is put out and none of the engineers can look at the damn thing directly…
The problem isn’t the LED itself. The problem is engineers that read the datasheets where it shows which forward current they need. What they forget to think about is that the recommended forward current is for max brightness, so they slap whichever resistor they need, and never give it another thought.
Whenever I design a LED circuit that is only used as an indicator, I always make it 10% or less than recommended, because I do not need to burn away my retina when I test the boards.
Of course that’s smart design. You’d think that would be something that becomes immediately obvious when the very first prototype PCB is put out and none of the engineers can look at the damn thing directly…