LIGHT EMITTING DIODES 1.6÷ ÷4.6 µm 3 .1 µ m Model LED31-TEC 14 µW •Light Emitting Diodes LED31-TEC are designed for emitting at a spectral range around 3100 nm. Thermocooler and thermoresistor are mounted inside 9 mm package TO-5. Heterostructures (HS) are grown on InAs substrates •Light Emitting Diodes LED31-TEC are developed for using in optical gas sensors and medical diagnostics. Such construction gives possibility for temperature stabilization of LED parameters. Lifetime is 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-TEC in two recommended here regimes (Quasi-CW and Pulsed). Wavelength, µm FWHM, µm Optical Power, µW Quasi-CW @ 200 mA Pulsed@2A Switching Time, ns Range of temperature control oC Emitting Area, µm Soldering temperature Min 3.00 0.60 Typ 3.10 0.70 Max 3.20 0.80 12 180 10 14 200 30 16 220 50 -10÷+60 300x300 Recommended regimes of LED operation Quasi-CW 200 mA 250 µs 250 µs Pulsed 95 C 1 µs f=2 kHz 2A o 500 µs TO-5 with thermocooler and thermistor Package f=2 kHz Main thermocooler parameters (without load) Imax Qmax Umax (Amps) (Watts) (Volts) 0.7 0.4 1.0 Thermoresistance, kOhm Parameters ∆Tmax °C 67 50 40 30 20 10 0 -20 Package TO-5 0 20 40 Temperature, C 60 LED31 typical spectra at different temperatures LED chip 15 Thermoresistor 12 Intensity, a.u. TEC LEAD TOP SIDE VIEW T=51°C 9 T=6°C T=20°C 6 3 Thermoresistor 0 2000 2400 Thermoresistor LED31 - typical Current Voltage characteristic 40 LED31 - typical power vs. current characteristic at different temperatures 24 3600 4000 Far field pattern with and without reflector 30 20 20 16 12 T=51°C 8 T=6°C 4 T=20°C 0 0 50 100 150 Current, mA 200 Current,mA Power, µW 2800 3200 Wavelength, nm 10 -4 -2 0 -10 0 -20 2 LED31 (without reflector) -30 -40 Voltage,V LED31-PR (with reflector) 4400