10.11.2010 LED20-SMD3 1 of 2 LED20-SMD3 technical data mid-infrared light emitting diode, smd light emitting diodes with central wavelength 2.05 m series are based on heterostructures grown on gasb substrates. solid solutions gainassb are used in active layer. wide band gap solid solutions algaassb with al content 64% are used for good electron confinement. LED20-SMD3 has a stable ouput power and a lifetime more then 80000 hours. features ? structure: gainassb/algaassb ? peak wavelength: typ. 2.05 m ? optical ouput power: typ. 1.0 mw qcw ? package: smd 3x3 mm specifications rating item condition min. typ. max. unit peak wavelength t=300 k 2.02 2.05 2.07 m fwhm 150 ma cw 150 200 250 nm quasi-cw optical power 200 ma qcw 0.8 1.0 1.2 mw pulsed optical power 1 a 20 25 30 mw switching time t=300 k 10 20 30 ns operation voltage 200 ma qcw v operating temperature -240 ? +50 c emitting area 300x300 m soldering temperature 180 c package smd type package 3x3 mm based on high thermal conductivity ceramics operating regime quasi-cw ? maximum current 220 ma ? recommended current 150-200ma pulsed ? maximum current 1 a (puls lenght 500 ns, repetition rate 2khz)
10.11.2010 LED20-SMD3 2 of 2 typical performance curves package ? tiny package for surface mounting ? anode and cathode are led to the metalized areas on the back side of the ceramic surface ? material ? low temperature co-fired ceramic (ltcc): - thermal conductivity 25 w/mk - thermoresistance 8 c/w
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