light emitting diodes 1.6 ? ? 4.6 m m m m m o o d d e e l l l l e e d d 3 3 1 1 3 3 . . 1 1 m m m m m m 1 1 4 4 m m m m w w ?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 opti cal 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, m m 3.0 0 3 . 10 3 . 20 fwhm, m m 0. 6 0 0.70 0.80 optical power, m w q uasi - cw @ 200 ma pulsed@1a 12 180 14 200 16 220 switching time, ns 10 30 50 operating temperature range , o c - 240 ? +50 emitting area, m m 300x300 soldering temperature 260 o c package t o - 18 LED31 - typical spectra at different temperatures 0 2 4 6 8 10 12 14 2000 2500 3000 3500 4000 4500 wavelength, nm intensity, arb.un. t=6 c t=50 c t=20 c LED31 - typical power vs. current characteristic 0 2 4 6 8 10 12 14 16 18 0 50 100 150 200 current, ma power , m w LED31 - typical current - voltage characteristic -40 -30 -20 -10 0 10 20 30 40 -3 -2 -1 0 1 voltage,v current,ma far field pattern with and without reflector 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 LED31 (without reflector) LED31-pr (with reflector) recommended regimes of operation quasi - cw 200 ma 250 m s 250 m s 1 m s 2 a 500 m s f=2 khz f=2 khz pulse
|
