L2791

LED Infrared LED L2791 series Small emission spot LED using current confined chip L2791 is infrared LED with a microball lens cemented to the current confined chip surface. This combination ensures high directivity and improved emission uniformity. In particular, L2791-02 uses a lens cap that delivers even narrower directivity. As a variant type not using a microball lens, L2791-03 is also available with the LED chip potted with resin, which gives a small emission spot of φ160 µm. Features L2791 : φ400 µm L2791-03: φ160 µm l Uniform emission: L2791/-02 l Narrow directivity: L2791/-02 Applications l Small emission spot l Automatic control systems l Optical switches l Auto-focus s Absolute maximum ratings (Ta=25 °C) Parameter Forward current Reverse voltage Pulse forward current O p era ting te m pe ratu re Storage temperature Symbol IF VR IFP Topr Tstg Condition Value 80 3 0.5 -30 to +85 -40 to +100 * Unit mA V A °C °C Pulse width=10 µs Duty ratio=1 % * L2791-03 is guaranteed to resist temperature cycle test of up to 5 cycles. s Electrical and optical characteristics (Ta=25 °C) Parameter Peak emission wavelength Spectral half width Forward voltage Pulse forward voltage Reverse current Radiant flux Radiant illuminance Rise time Fall time Symbol λp ∆λ VF VFP IR φe PE tr tf Condition IF=50 mA IF=50 mA IF=50 mA IF=0.5 A VR=3 V IF=50 mA IF=50 mA IF=50 mA, 10 to 90 % IF=50 mA, 90 to 10 % Min. 850 1.6 L2791 Typ. Max. 880 60 1.5 3.2 2.0 1.3 0.12 0.12 910 1.7 4.0 10 0.2 0.2 Min. 850 1.6 L2791-02 Typ. Max. 880 60 1.5 3.2 2.0 2.0 0.12 0.12 910 1.7 4.0 10 0.2 0.2 Min. 850 4.0 L2791-03 Typ. Max. 880 60 1.5 3.2 5.0 0.12 0.12 910 1.7 4.0 10 0.2 0.2 Unit nm nm V V µA mW mW/cm2 µs µs 1 Infrared LED s Emission spectrum 100 (Typ. Ta=25 ˚C, IF=50 mA) 100 L2791 series s Radiant flux vs. forward current (Typ. Ta=25 ˚C, tw=100 µs, 0.1 %) RELATIVE RADIANT OUTPUT (%) 80 L2791-03 RADIANT FLUX (mW) 10 60 40 1 L2791, L2791-02 20 0 700 800 900 1000 0.1 1 10 100 1000 WAVELENGTH (nm) KLEDB0158EA FORWARD CURRENT (mA) KLEDB0159EA s Forward current vs. forward voltage 1000 (Typ. Ta=25 ˚C, tw=100 µs, 1 %) s Directivity 20˚ 30˚ 40˚ 10˚ 0˚ 10˚ 20˚ (Typ. Ta=25 ˚C) 30˚ 40˚ 50˚ 60˚ L2791-02 L2791 70˚ 80˚ 60 90˚ 80 100 FORWARD CURRENT (mA) 50˚ 100 80˚ 60˚ 70˚ L2791-03 * 60 40 20 0 20 40 90˚ 100 80 10 RELATIVE RADIANT OUTPUT (%) * L2791-03: Except for reflection ingredient of the base. 1 1.0 1.5 2.0 2.5 3.0 3.5 FORWARD VOLTAGE (V) KLEDB0160EA KLEDB0161EA s Radiant output vs. ambient temperature +1 (Typ. IF=50 mA) s Allowable forward current vs. ambient temperature (Typ.) RELATIVE ALLOWABLE FORWARD CURRENT (%) 100 RELATIVE RADIANT OUTPUT (dB) 0 80 -1 60 40 -2 20 -3 -40 -20 0 20 40 60 80 100 0 -40 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE (˚C) KLEDB0162EA AMBIENT TEMPERATURE (˚C) KLEDB0027EB 2 Infrared LED s Allowable forward current vs. duty ratio 10000 (Typ. Ta=25 ˚C) L2791 series ALLOWABLE FORWARD CURRENT (mA) 1000 PULSE WIDTH=1 µs PULSE WIDTH=10 µs 100 PULSE WIDTH=100 µs 10 0.01 0.1 1 10 100 DUTY RATIO (%) KLEDB0288EA s Dimensional outlines (unit: mm) ➀ L2791 5.4 ± 0.2 4.7 ± 0.1 3.6 ± 0.2 ➁ L2791-02 5.4 ± 0.2 4.65 ± 0.1 ➂ L2791-03 CLEAR EPOXY RESIN 4.2 ± 0.1 2.3 ± 0.3 1.12 ± 0.1 5.4 ± 0.1 GLASS WINDOW 3.0 ± 0.1 4.5 ± 0.2 6.65 ± 0.2 13.5 0.45 LEAD 13.5 0.45 LEAD 0.45 LEAD 2.54 ± 0.2 2.54 ± 0.2 2.54 ± 0.2 COMMON TO CASE COMMON TO CASE COMMON TO CASE KLEDA0060EA KLEDA0059EA 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. ©2006 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, 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: Smidesvägen 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 Cat. No. KLED1021E02 Jun. 2006 DN 13.5 KLEDA0058EA 3