Peak emission wavelength: 4.3 μm

Peak emission wavelength: 4.3 μm The is a mid infrared LED with a 4.3 μm peak emission wavelength. It is a product that has been achieved using Hamamatsu unique crystal growth technology and process technology. It is a suitable light source for CO2 detectors. Features Applications High output High-speed response High reliability Low power consumption Surface mount type ceramic package (L32-43C) CO2 detectors Absolute maximum ratings (Ta=25 C unless otherwise noted) Parameter Symbol Condition L32-43C L32-43M Unit Reverse voltage VR V Forward current (QCW mode* ) IFqcw Pulse width= μs Duty ratio=5% ma Pulse forward current IFP Pulse width= μs Duty ratio=%.5 A Power dissipation P mw Operating temperature Topr No dew condensation* 2-3 to +85 C Storage temperature Tstg No dew condensation* 2-4 to + C Reflow soldering condition - Peak temperature: 26 C, 2 times* 3 - - *: Quasi continuous wave mode *2: When there is a temperature difference between a product and the surrounding area in high humidity environment, dew condensation may occur on the product surface. Dew condensation on the product may cause deterioration in characteristics and reliability. *3: JEDEC level 3 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) Parameter Symbol Condition Min. Typ. Max. Unit Peak emission wavelength λp IF=8 ma, QCW mode 4. 4.3 4.4 μm Spectral half width λ IF=8 ma, QCW mode -.7. μm Radiant flux ϕe IF=8 ma, QCW mode.5.3 - mw Forward voltage VF IF=8 ma, QCW mode -.6 2. V Reverse current IR VR= mv - - μa Rise time tr to 9% - - μs www.hamamatsu.com

Emission spectrum Radiant flux vs. pulse forward current (Typ. Ta=25 C) (Typ. Ta=25 C, tw= μs, duty ratio=%) 9 8 7 6 5 4 3 Radiant flux (mw). 2 2. 3 4 5 6 Wavelength (μm) Pulse forward current (ma) KLEDB44EA KLEDB45EA Pulse forward current vs. pulse forward voltage (Typ. Ta=25 C, tw= μs, %) Directivity L32-43C Pulse forward current (ma) (Typ. Ta=25 C, distance between LED and photodiode: 3 cm) 3 3 4 4 9 9 8 6 4 2 2 4 6 8 2 3 4 KLEDB464EA Pulse forward voltage (V) KLEDB459EA 2

Light output vs. ambient temperature L32-43M 6 (Typ. IF=8 ma, QCW mode) (Typ. Ta=25 C, distance between LED and photodiode: 5 cm) 3 3 4 4 9 9 8 6 4 2 2 4 6 8 4 2 8 6 4 KLEDB452EA 2 2 3 4 5 6 7 8 9 Ambient temperature ( C) KLEDB46EB Allowable forward current vs. ambient temperature 2 Allowable forward current vs. duty ratio (Ta=25 C) Relative forward current (%) 8 6 4 2 Allowable forward current (A). tw= μs tw= μs -4-2 2 4 6 8 Ambient temperature ( C) KLEDB47EB... Duty ratio (%) KLEDB48EA 3

Dimensional outlines (unit: mm) L32-43C L32-43M 3.8 ±.2 ɸ5.4 ±.2 2.86 ±. ɸ4.72 ±. 3.8 ±.2 2.86 ±. ɸ2.2 min. 2.75 ±.2 3.5 ±.2.5 ±.2 t=.3 Emission section. ±.2.5 ±.2.7 ±.2.8 ±.2 ϕ.43 lead ϕ2.54 ±.2 Case 2.7 ± KLEDAEB KLEDA5EA Recommended land pattern (unit: mm) 4.3.2 4.3 KLEDC52EA 4

Recommended solder reflow conditions Peak temperature - 5 C: 3 s max. Peak temperature: 26 C 27 C 3 C/s max. -6 C/s max. Temperature ( C) 5 to 2 C Preheat 6 to 2 s Soldering 6 to 5 s 25 C to peak temperature: 8 min max. Time After unpacking, store the device in an environment at a temperature range of 5 to 3 C and a humidity of 6% or less, and perform reflow soldering within 68 hours. The effect that the product receives during reflow soldering varies depending on the circuit board and reflow oven that are used. Before actual reflow soldering, check for any problems by testing out the reflow soldering methods in advance. KLEDB465EA Related information www.hamamatsu.com/sp/ssd/doc_en.html Precautions Disclaimer Metal, ceramic, plastic packages Technical information LED Information described in this material is current as of February 27. 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. www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Solid State Division 26- Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (8) 53-434-33, Fax: (8) 53-434-584 U.S.A.: Hamamatsu Corporation: 36 Foothill Road, Bridgewater, N.J. 887, U.S.A., Telephone: () 98-23-96, Fax: () 98-23-28 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr., D-822 Herrsching am Ammersee, Germany, Telephone: (49) 852-375-, Fax: (49) 852-265-8 France: Hamamatsu Photonics France S.A.R.L.: 9, Rue du Saule Trapu, Parc du Moulin de Massy, 9882 Massy Cedex, France, Telephone: 33-() 69 53 7, Fax: 33-() 69 53 7 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, Tewin Road, Welwyn Garden City, Hertfordshire AL7 BW, United Kingdom, Telephone: (44) 77-294888, Fax: (44) 77-325777 North Europe: Hamamatsu Photonics Norden AB: Torshamnsgatan 35 644 Kista, Sweden, Telephone: (46) 8-59-3-, Fax: (46) 8-59-3- Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, int. 6, 22 Arese (Milano), Italy, Telephone: (39) 2-9358733, Fax: (39) 2-935874 China: Hamamatsu Photonics (China) Co., Ltd.: B2, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 2, China, Telephone: (86) -6586-66, Fax: (86) -6586-2866 5 Cat. No. KLED69E4 Feb. 27 DN