LIGHT EMITTING DIODES 1.6÷ ÷4.6 µm 3.1 µm 14 µW Model LED31 •Light Emitting Diodes LED31 are designed for emitting at a spectral range around 3100 nm. Heterostructures (HS) are grown on InAs substrates. The output emission can be modulated by current flowing in a forward direction. •Light Emitting Diodes LED31 are developed for using in optical gas sensors and medical diagnostics. They have stable output power and lifetime more then 10000 hours. •Related products: LED31 can be used in optical pair with our photodiodes PD36. Our standard LED Driver provides power supply of LED31 in two recommended here regimes (Quasi-CW and Pulsed). Parameters Min Typ Max Wavelength, µm 3.00 3.10 3.20 FWHM, µm 0.60 0.70 0.80 12 180 14 200 16 220 10 30 50 Recommended regimes of operation Quasi-CW @ 200 mA Pulsed@1A Switching Time, ns f=2 kHz Quasi-CW Optical Power, µW 200 mA 250 µs 250 µs 1 µs Pulse Operating Temperature Range, oC -240÷+50 Emitting Area, µm 300x300 Soldering temperature 260 oC Package TO-18 f=2 kHz 2A 500 µs LED31 - typical spectra at different temperatures 14 Intensity, arb.un. 12 T=6 C T=20 C 10 8 6 T=50 C 4 2 0 2000 2500 3000 3500 4000 Wavelength, nm Far field pattern with and without reflector LED31 - typical Current - Voltage characteristic 40 LED31 - typical Power vs. current characteristic 18 1 16 30 14 20 0,8 0,7 0,6 0,5 Current,mA 12 Power, µW 0,9 10 8 6 10 0,2 -2 -1 -10 -20 -30 0 100 Current, mA 150 200 0,1 0 -3 2 50 0,3 0 4 0 0,4 -40 Voltage,V 0 1 LED31 (without reflector) LED31-PR (with reflector) 4500