Peak emission wavelength: 3.9 μm The is a high-output mid-infrared LED with a 3.9 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 reference light source for gas measurement. Features Applications High output High-speed response High reliability Surface mount type ceramic package (L3454-39C) Reference light source for gas measurement Absolute maximum ratings (Ta=25 C unless otherwise noted) Parameter Symbol Condition L3454-39C L3454-39M 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= ma, QCW mode 3.8 3.9 4. µm Spectral half width λ IF= ma, QCW mode -.5.8 µm Radiant flux ϕe IF= ma, QCW mode..2 - mw Forward voltage VF IF= ma, QCW mode -.7 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, IF= ma, QCW mode) (Typ. Ta=25 C, tw= µs, %) 6 4 Radiant flux (mw). 2. 3 4 5 6 Wavelength (μm) Pulse forward current (ma) KLEDB449EA KLEDB45EA Pulse forward current vs. pulse forward voltage Directivity (Typ. Ta=25 C, tw= µs, %) L3454-39C (Typ. Ta=25 C, distance between LED and photodiode: 3 cm) Pulse forward current (ma) 6 4 4 6..5 2. 2.5 3. 3.5 KLEDB464EA Pulse forward voltage (V) KLEDB45EA 2
Light output vs. ambient temperature L3454-39M 4 (Typ. IF=5 ma, QCW mode) (Typ. Ta=25 C, distance between LED and photodiode: 5 cm) 6 4 4 6 KLEDB452EA 6 4 3 4 5 6 7 9 Ambient temperature ( C) KLEDB453EA Allowable forward current vs. ambient temperature Allowable forward current vs. duty ratio (Ta=25 C) Relative forward current (%) 6 4 Allowable forward current (A). tw= µs tw= µs -4-4 6 Ambient temperature ( C) KLEDB448EA... Duty ratio (%) KLEDB48EA 3
Dimensional outlines (unit: mm) L3454-39C L3454-39M 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 C Preheat 6 to 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 December 7. 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. 87, U.S.A., Telephone: () 98-23-96, Fax: () 98-23-28, E-mail: usa@hamamatsu.com Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr., D-822 Herrsching am Ammersee, Germany, Telephone: (49) 852-375-, Fax: (49) 852-265-8, E-mail: info@hamamatsu.de 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, E-mail: infos@hamamatsu.fr 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, E-mail: info@hamamatsu.co.uk North Europe: Hamamatsu Photonics Norden AB: Torshamnsgatan 35 644 Kista, Sweden, Telephone: (46)8-59 3, Fax: (46)8-59 3, E-mail: info@hamamatsu.se Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, int. 6, Arese (Milano), Italy, Telephone: (39)2-93 58 7 33, Fax: (39)2-93 58 7 4, E-mail: info@hamamatsu.it China: Hamamatsu Photonics (China) Co., Ltd.: B, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing, China, Telephone: (86) -6586-66, Fax: (86) -6586-2866, E-mail: hpc@hamamatsu.com.cn Taiwan: Hamamatsu Photonics Taiwan Co., Ltd.: 8F-3, No. 58, Section2, Gongdao 5th Road, East District, Hsinchu, 3, Taiwan R.O.C. Telephone: (886)3-659-, Fax: (886)3-659-8, E-mail: info@hamamatsu.com.tw Cat. No. KLED74E2 Dec. 7 DN 5