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LED Forward Voltage, Vf, Versus Color

Posted: Sun Dec 16, 2018 10:10 am
by mediatechnology
This is a quick reference chart of LED forward voltage versus color for those wanting to use LEDs as voltage references.

Red, yellow and green are the colors I've seen used.

Image
LED Forward Voltage, Vf, Versus Color, Image Courtesy Wikipedia

Related reading:

LED Temperature Coefficients When Used as Bias Sources: viewtopic.php?f=12&t=171

Re: LED Forward Voltage, Vf, Versus Color

Posted: Sun Dec 16, 2018 10:35 am
by JR.
I've used red before, for a drop used to generate a bias voltage in a later BBD delay kit. It was a little odd to have an LED lit inside the closed unit. The other LED colors were too expensive when I considered this kind of stuff (the red was an relative extravagance) ...

I didn't know that many LED colors exist.

JR

[edit when I looked for cost effective UVc LEDs (200-280 nm) I didn't have much luck (i did find a UVc CFL lamp). /edit]