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A comment on The Light Phone: Minimal Smartphone. Parent comment

Re:The Light Phone: Minimal Smartphone by RL_Quine on Saturday August 14, 2021 @08:25PM (#28185149)
Surprisingly, they actually are blue dies with red phosphor. Keeping all the colours the same forward voltage makes driving them a lot easier, as well as having all the colours in the same production process.
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Re:The Light Phone: Minimal Smartphone by somebodynew on Saturday August 14, 2021 @08:58PM (#28185316)
It seems conceivable that a red LED based on phosphor excitation could exist somewhere where having the same forward voltage for different colors was essential, but I haven't been able to find one.

Taking into account the different forward voltages for different LED colors is a standard part of designing an LED circuit. One of the LED data sheets I have on hand for some 5 mm LEDs includes a forward voltage chart with 1.9 V for red and 3.2 V for blue.

Do you have a part number for a red LED that operates by illuminating a red phosphor with a blue LED?

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