LED Infrared LED L1939 series φ300 µm emission spot, no electrode in emission area Features Applications l Small emission spot: φ300 µm l Wide directivity l High reliability, long life l Auto-focus l Optical switches l Mark sensors ■ Absolute maximum ratings (Ta=25 °C) Parameter Forward current Reverse voltage Symbol IF VR Pulse forward current IFP O p e ra tin g te m pe ra tu re Storage temperature Topr Tstg Condition Value 100 5 Unit mA V 1.5 A -30 to +85 -40 to +100 * °C °C Pulse width=10 µs Duty ratio=1 % * L1939 is guaranteed to resist temperature cycle test of up to 5 cycles. ■ Electrical and optical characteristics (Ta=25 °C) Parameter Symbol Peak emission wavelength Spectral half width Forward voltage Pulse forward voltage Reverse current Radiant flux Radiant illuminance Rise time Fall time λp ∆λ VF VFP IR φe PE tr tf Min. L1939 Typ. Max. IF=50 mA 870 890 IF=50 mA IF=50 mA IF=1.5 A VR=5 V IF=50 mA IF=50 mA IF=50 mA, 10 to 90 % IF=50 mA, 90 to 10 % 8.0 - 50 1.4 2.7 10.0 0.4 0.45 0.45 Condition Min. L1939-04 Typ. Max. 920 870 890 920 nm 1.5 3.4 5 0.7 0.7 2.0 - 50 1.4 2.7 2.8 0.35 0.45 0.45 1.5 3.4 5 0.7 0.7 nm V V µA mW mW/cm2 µs µs Unit Infrared LED ■ Emission spectrum ■ Forward current vs. forward voltage (Typ. Ta=25 ˚C, tw=100 µs, 0.1 %) (Typ. Ta=25 ˚C, tw=100 µs, 0.1 %) (Typ. Ta=25 ˚C, IF=50 mA) 10000 1000 FORWARD CURRENT (mA) RADIANT FLUX (mW) 80 60 40 L1939 100 10 L1939-04 20 0 700 800 900 1 1000 1 100 10 WAVELENGTH (nm) 1000 FORWARD VOLTAGE (V) 30˚ 40˚ 40˚ L1939 50˚ 50˚ 60˚ 60˚ L1939-04 70˚ 70˚ 80˚ 80˚ 90˚ 100 80 60 40 20 0 20 40 60 90˚ 80 100 RELATIVE RADIANT OUTPUT (%) ■ Allowable forward current vs. ambient temperature (Typ.) +2 +1 0 -1 -2 -3 -4 -5 -40 Except for reflection ingredient of the base. -20 0 20 40 60 80 100 AMBIENT TEMPERATURE (˚C) KLEDB0148EA ■ Allowable forward current vs. duty ratio 80 60 40 20 0 -40 -20 0 20 40 60 KLEDB0027EB ➁ L1939-04 5.4 ± 0.2 CLEAR EPOXY RESIN 2.3 ± 0.3 5.4 ± 0.1 4.2 ± 0.1 1 4.7 ± 0.1 GLASS WINDOW 3.0 ± 0.1 0.45 LEAD 0.45 LEAD 2.54 ± 0.2 1 DUTY RATIO (%) 10 13.5 PULSE WIDTH=100 µs 0.1 13.5 PULSE WIDTH=10 µs 0.1 100 AMBIENT TEMPERATURE (˚C) ➀ L1939 PULSE WIDTH=1 µs 0.01 0.01 80 KLEDB0145EA 1.12 ± 0.1 ALLOWABLE FORWARD CURRENT (A) 100 ■ Dimensional outlines (unit: mm) (Typ. Ta=25 ˚C) 10 KLEDB0147EA RELATIVE ALLOWABLE FORWARD CURRENT (%) RELATIVE RADIANT OUTPUT (dB) (Typ. Ta=25 ˚C) 3.0 (Typ. IF=50 mA) +3 20˚ 2.5 KLEDB0146EA ■ Radiant output vs. ambient temperature 10˚ 0˚ 10˚ 2.0 1.5 FORWARD CURRENT (mA) ■ Directivity 20˚ 100 10 1.0 10000 KLEDB0201EA 30˚ 1000 3.6 ± 0.2 100 RELATIVE RADIANT OUTPUT (%) ■ Radiant flux vs. forward current L1939 series 100 2.54 ± 0.2 KLEDB0149EA COMMON TO CASE COMMON TO CASE KLEDA0009ED KLEDA0053EB 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. ©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: 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. KLED1023E01 Apr. 2001 DN