Led resistor calculator help

floresta:
The 0.5w power rating is a maximum allowable value. You wouldn't want to operate at that value.

Don

Yes, yes, my point was also "only ~= 0.5W and stop" (that's when the OP trusts the 0.5W so maybe while ramping voltage the LED pops at a lower value then good luck trying to be a QC/testing engineer) :slight_smile: