light emitting diodes 1.6 ?? 4.6 mm m m m o o d d e e l l l l e e d d 3 3 4 4 - - t t e e c c - - p p r r 3 3 . . 4 4 mm mm m m 2 2 4 4 mm mm w w ?light emitting diodes LED34-TEC-PR are designed for emitting at a spectral range around 3400 nm. thermocooler and thermoresistor are mounted inside 9 mm package to-5. heterostructures (hs) are grown on inas substrates ?light emitting diodes LED34-TEC-PR 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: led34 can be used in optical pair with our photodiodes pd36. our standard led driver provides power supply of LED34-TEC-PR in two recommended here regimes (quasi-cw and pulsed). parameters min typ max wavelength, mm 3.30 3.40 3.50 fwhm, mm 0.60 0.70 0.80 optical power, mw quasi-cw @ 200 ma pulsed@2a 20 320 24 400 28 480 switching time, ns 10 30 50 range of temperature control o c -10?+60 emitting area, mm 300x300 soldering temperature 95 o c package to-5 with thermocooler, thermistor and parabolic reflector main thermocooler parameters (without load) i max q max u max dt max (amps) (watts) (volts) c 0.7 0.4 1.0 67 led chip tec lead thermoresistor top side view thermoresistor thermoresistor led34 typical spectra at different temperatures 0 5 10 15 20 25 30 35 40 45 2500 2900 3300 3700 4100 4500 wavelength, nm intensity, a.u. t=4c t=21c t=47c led34 - typical power vs. current characteristic at different temperatures 0 4 8 12 16 20 24 28 32 0 50 100 150 200 current, ma power, m w t=4c t=21c t=47c c led34 - typical current-voltage characteristic -40 -30 -20 -10 0 10 20 30 40 -1 -0,8 -0,6 -0,4 -0,2 0 0,2 0,4 voltage, v current, ma far field pattern with and without reflector led34 (without reflector) led34-pr (with reflector) package to - 5 with parabolic reflecto r 0 10 20 30 40 50 -20 0 20 40 60 temperature, c thermoresistance, kohm recommended regimes of led operation quasi-cw 200 ma 250 m s 1 m s 2 a 500 m s f=2 khz f=2 khz pulsed 250 m s
|
