Infrared LED L10823 series Peak emission wavelength: 1.65 m The L10823 series is a long wavelength infrared LED using an InGaAs chip. The peak emission occurs at a wavelength near the methane gas absorption band, making the L10823 series suitable for a light source for methane gas detection. Features Applications Peak emission wavelength: 1.65 m Light source for methane gas detection High radiant output power Narrow directivity (L10823-01) Absolute maximum ratings (Ta=25 C, unless otherwise noted) Parameter Reverse voltage Forward current Forward current derating rate Pulse forward current Pulse forward current derating rate Power dissipation Operating temperature Storage temperature Symbol Condition VR IF Ta > 25 C Pulse width=10 s IFP Duty ratio=1 % Ta > 25 C P Topr Tstg Value 1 80 1.1 Unit V mA mA/C 1.0 A 13 150 -30 to +85 -40 to +100 mA/C mW C C Electrical and optical characteristics (Ta=25 C) Parameter Peak emission wavelength Spectral half width Radiant flux Forward voltage Reverse current Cut-off frequency *1 Symbol Condition p e VF IR fc IF=50 mA IF=50 mA IF=50 mA IF=50 mA VR=1 V IF=50 mA 10 mAp-p *1 Min. 1.6 1.4 10 L10823 Typ. 1.65 120 2.0 0.9 15 Max. 1.7 170 1.4 10 - Min. 1.6 1.6 10 L10823-01 Typ. 1.65 120 2.3 0.9 15 Max. 1.7 170 1.4 10 - Unit m nm mW V A MHz *1: Frequency at which the light output decreases by 3 dB from the light output at 100 kHz www.hamamatsu.com 1 Infrared LED L10823 series Emission spectrum Radiant flux vs. forward current !" # Forward current vs. forward voltage !" # $%" #& # !" # $%" #& # #./# '( )*+ - ' % $ '( ) , . ( , /( *-- 0 & # #. # # # # #$ # #% #' # # #& # Directivity % !" #$ %& % % % ' % ' % ( % % % % KLEDB0339EA !% ! ! !" !" Allowable forward current vs. ambient temperature ! " # $ &% ! KLEDB0338EA & $ % '- * ( ) ( % & % $ % ,# ) ##$% # &$%' ( - % % # KLEDB0337EA Radiant output vs. ambient temperature % % # KLEDB0239EA % # # % ! " ." . " KLEDB0327EA KLEDB0328EA Allowable forward current vs. duty ratio ! "# KLEDB0225EA 2 Infrared LED L10823 series Dimensional outlines (unit: mm) L10823-01 4.7 0.1 3.6 0.2 5.4 0.2 0.45 0.05 Lead 13.5 1 Glass window 3.0 0.1 # 2.54 0.2 L10823 ! " Common to case KLEDA0090EA KLEDA0091EA ! " #$%&' " #$(&' )*++, - .. -//! 0 .. 1 22*342 4 45 0 67849889 : ; $92& 87467647722 <"; $92& 87467648296 ; 0 ; 73+ < = -/> " 3,2+ > !: +99+?4+,2+ ; $2& ,+94*724+,3+ <"; $2& ,+94*7242*29 @ ; - 1 @; A 2+ 149**22 @ ; $6,& 928*47?84+ <"; $6,& 928*4*3849 < ; - < =B; 2, = - ,299* 0" < ; 774$2& 3, 87 ?2 ++ <"; 774$2& 3, 87 ?2 2+ . ; - . B; * 0 2+ = C @ 0 B? 2>C . ; $66& 2?+?4*,6999 <"; $66& 2?+?47*8??? ! D ; - ! >; E 2* D42?2 62 ; $63& 948+,4+724++ <"; $63& 948+,4+724+2 ; - =B; 2FD *++*+ $ & ; $7,& +*4,784924?77 <"; $7,& +*4,784924?62 Cat. No. KLED1057E01 Aug. 2009 DN 3