The Ledtech LT0344R-41 Light Emitting Diode

The official spec sheet for this is large and inefficient. The relevant information for this LED is as follows:

3.0 MM round lamp

long leads with 2.54mm pitch

Absolute maximum ratings at 25 degrees C:

Reverse voltage: 3.0 V

DC forward current: 30 mA

Pulsed current (1/10 duty cycle, 0.1 ms pulse width): 100 mA

Lead soldering temperature (1.6 mm from body): 250 degrees C for 5 sec

Material: GaAsP on GaP

Emitting color: Hi-Eff Red

Peak wavelenth: 535 nm (at current of 20 mA)

Forward voltage at 20 mA: 2.1 typical, 3.0 max

View angle: 36 degrees