LED Forward Voltage, Vf, Versus Color

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mediatechnology
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LED Forward Voltage, Vf, Versus Color

Post by mediatechnology » Sun Dec 16, 2018 10:10 am

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.

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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
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JR.
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Re: LED Forward Voltage, Vf, Versus Color

Post by JR. » Sun Dec 16, 2018 10:35 am

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]
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