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Peak emission wavelength: 1.45 μm Infrared LED www.hamamatsu.com The L10660 series is a high-power LED that emits infrared light at a peak wavelength of 1.45 μm. The LED is suitable for ap- plications requiring use of infrared emitters with InGaAs photodiode. Features Applications Peak emission wavelength: 1.45 μm High radiant output power Light source for moisture meter Light source for foreign object screening Absolute maximum ratings (Ta=25 °C, unless otherwise noted) Parameter Symbol Condition Value Unit Reverse voltage VR 1V Forward current IF 80 mA Forward current decrease rate - Ta > 25 °C 1.1 mA/°C Pulse forward current IFP Pulse width=10 μs Duty ratio=1% 1.0 A Pulse forward current decrease rate - Ta > 25 °C 13 mA/°C Power dissipation P 150 mW Operating temperature Topr -30 to +85 °C Storage temperature Tstg -40 to +100 °C Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings. Electrical and optical characteristics (Ta=25 °C) Spectral half width (FWHM) Δλ IF=50 mA - 120 170 - 120 170 nm Radiant fl ux φe IF=50 mA 1.8 2.4 - 2.0 2.8 - mW Forward voltage VF IF=50 mA - 1.0 1.5 - 1.0 1.5 V Reverse current IR VR=1 V -- 1 0 -- 1 0 μA Cut-off frequency * fc IF=50 mA ± 10 mAp-p 10 15 - 10 15 - MHz * Frequency at which the light output drops by -3 dB based on light output at 100 kHz.

Infrared LED L10660 series Emission spectrum Directivity Radiant flux vs. forward current Forward current vs. forward voltage KLEDB0311EB KLEDB0326EA KLEDB0312EB KLEDB0325EA Wavelength (nm) Relative radiant output (%) (Typ. Ta=25 °C, IF=50 mA) 1200 1300 1400 1500 1600 100 020 40 60 80 10020 40 60 80 100 Relative radiant output (%) (Typ. Ta=25 °C) 80° 70° 60° 50° 40° 30° 80° 70° 60° 50° 40° 30° 20° 10° 0° 10° 20° 90° 90° L10660-01 L10660 Forward current (mA) Radiant flux (mW) (Typ. Ta=25 °C, tw=100 µs, 0.1%) 10 100 1000 0.1 100 L10660-01 L10660 Forward voltage (V) (Typ. Ta=25 °C, tw=100 µs, 0.1%) 100 1000 Forward current (mA)

Infrared LED L10660 series Allowable forward current vs. duty ratio Radiant output vs. ambient temperature Allowable forward current vs. ambient temperature KLEDB0225EB KLEDB0327EA KLEDB0328EB 0.01 Duty ratio (%) Allowable forward current (A) 0.01 0.1 1 10 100 0.1 Pulse width=1 µs (Ta=25 °C) Pulse width=100 µs Pulse width=10 µs Ambient temperature (°C) (Typ. IF=50 mA) -40 -20 0 20 40 60 80 100 Relative radiant output (dB) Ambient temperature (°C) 120 110 100 Relative allowable forward current (%) -40 -20 0 20 40 60 80 100

Infrared LED L10660 series Cat. No. KLED1055E03 Nov. 2015 DN www.hamamatsu.com 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 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 8152-375-0, Fax: (49) 8152-265-8 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: Torshamnsgatan 35 16440 Kista, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01 Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, 1 int. 6, 20020 Arese (Milano), Italy, Telephone: (39) 02-93581733, Fax: (39) 02-93581741 China: Hamamatsu Photonics (China) Co., Ltd.: B1201, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86) 10-6586-6006, Fax: (86) 10-6586-2866 Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always contact us for the delivery specification sheet to check the latest specifications. The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product use. Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission. Information described in this material is current as of November, 2015. Dimensional outlines (unit: mm) 5.4 ± 0.2 4.7 ± 0.1 Glass window 3.0 ± 0.1 3.6 ± 0.213.5 ± 1 2.54 ± 0.2 0.45 ± 0.05 Lead Common to case L10660 L10660-01 KLEDA0090EA KLEDA0091EA 4.65 ± 0.1 4.5 ± 0.2 6.65 ± 0.213.5 ± 1 5.4 ± 0.2 2.54 ± 0.2 Common to case 0.45 ± 0.05 Lead Related information Precautions ∙ Disclaimer ∙ Metal, ceramic, plastic products www.hamamatsu.com/sp/ssd/doc_en.html