I have an LED which has specified Typical forward voltage of 3.5V and Maximum forward voltage 3.9V.
I applied 3.3V across it with a 300 Ohm resistor in series. Why did it light up?
I am wondering if I can pick this LED as a reliable choice for my design (which as noted runs at 3.3V supply across the board).
The LED datasheet has a curve of Forward voltage vs current (I'm also confused why they put Forward current on the Y-axis instead of X, given that current is what one would vary here). Anyway, the curve shows a decrease in the forward voltage at smaller currents; perhaps this is the explanation?
Here is the downloadable PDF datasheet for this LED (it's a tricolor LED and in this question, I was referring to the specs for Blue and Green).