LED Infrared LED L7866 Peak emission wavelength: 1.3 m L7866 is a long wavelength LED using an InGaAs chip. Peak emission occurs at 1.3 m, making L7866 ideal for reference light sources when detecting water content or moisture. Features Applications l Peak emission wavelength: 1.3 m l High radiant output power l Reference light source for moisture meter l Light source for photosensitive material Absolute maximum ratings (Ta=25 C, unless otherwise noted) Parameter Reverse voltage Forward current Forward current derating rate Pulse forward current Symbol V4 I. I.2 Condition Ta > 25 C Pulse width=10 s Duty ratio=1 % Pulse forward current Ta > 25 C derating rate Power dissipation P Operating temperature Topr Storage temperature Tstg *1: L7866 is guaranteed to resist temperature cycle test of up to 5 cycles. Value 1 80 1.1 Unit V mA mA/C 1.0 A 13 mA/C 150 -30 to +85 -40 to +100 * mW C C Electrical and optical characteristics (Ta=25 C) Parameter Symbol Condition Min. Typ. Peak emission wavelength I.=50 mA 1.25 1.3 lp Spectral half width (FWHM) I.=50 mA 100 Dl Radiant flux I.=50 mA 0.7 1.0 fe Forward voltage V. I.=50 mA 1.0 Pulse forward voltage V.2 I.=1 A 2 Reverse current I4 V4=1 V Cut-off frequency * fc I.=50 mA 10 mAp-p 1 3 *2: Frequency at which the light output drops by -3 dB based on light output at 100 kHz. Max. 1.35 150 1.5 3 10 - Unit m nm mW V V A MHz L7866 may be damaged or performance may deteriorate due to static electricity, so use caution when handling. 1 Infrared LED Emission spectrum Forward current vs. forward voltage (Typ. Ta=25 C, tw=100 s, 0.1 %) 100 RADIANT FLUX (mW) 80 60 40 10 1 20 0 1 1.1 1.2 1.3 1.4 1.5 0.1 10 1.6 100 WAVELENGTH (m) (Typ. Ta=25 C, tw=100 s, 0.1 %) 1000 FORWARD CURRENT (mA) 100 RELATIVE RADIANT OUTPUT (%) Radiant flux vs. forward current (Typ. Ta=25 C, IF=50 mA) 100 10 0.5 1000 1.0 1.5 2.0 2.5 FORWARD VOLTAGE (V) FORWARD CURRENT (mA) KLEDB0239EA Directivity L7866 KLEDB0234EA Radiant output vs. ambient temperature KLEDB0235EA Allowable forward current vs. ambient temperature (Typ. Ta=25 C) 10 10 20 (Typ. IF=50 mA) +3 (Typ.) 30 RELATIVE RADIANT OUTPUT (dB) 100 % 30 80 % 60 % 40 50 40 50 40 % 60 60 20 % 70 70 80 80 90 90 +2 +1 0 -1 -2 -3 -4 -5 -40 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE (C) RELATIVE RADIANT OUTPUT (%) KLEDB0240EA Allowable forward current vs. duty ratio 80 60 40 20 0 -40 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE (C) KLEDB0027EB Dimensional outline (unit: mm) 5.4 0.2 3.6 0.2 4.7 0.1 GLASS WINDOW 3.0 0.1 PULSE WIDTH=1 s 1 PULSE WIDTH=10 s 13.5 ALLOWABLE FORWARD CURRENT (A) 100 KLEDB0241EB (Typ. Ta=25 C) 10 RELATIVE ALLOWABLE FORWARD CURRENT (%) 20 PULSE WIDTH=100 s 0.1 0.45 LEAD 2.54 0.2 0.01 0.01 0.1 1 10 100 DUTY RATIO (%) KLEDB0225EA COMMON TO CASE KLEDA0071EB Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. (c)2001 Hamamatsu Photonics K.K. HAMAMATSU PHOTONICS K.K., Solid State Division 1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184, http://www.hamamatsu.com U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658 France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777 North Europe: Hamamatsu Photonics Norden AB: Smidesvagen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741 2 Cat. No. KLED1037E01 Dec. 2001 DN