In article ,
"Michael A. Terrell" wrote:

D Peter Maus wrote:

Quite sure. I also found one at RS this weekend that is rated at
1.3 V.

I'd like to know who makes it and what the chemistry is. Standard
white LEDs are blue and use a phosphor to convert it to white light. I
have data sheets on over 100 different types of white LEDs and none are
under 3 volts.

Most the various color LED's I have seen are in the range Peter
indicated 1.7V -2.2V for fV but they lase before they reach their
forward voltage. They reach their specified light output power at the
forward voltage.

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Telamon
Ventura, California