LED Red LED L7868 series Small emission spot, red LED using current confined chip L7868/-02 are red LEDs with a microball lens bonded to the current-confined structure chip surface. L7868-01 uses the same structure LED chip with no microball lens and provides a smaller emission spot of 150 m. L7868-02 uses a glass lens window for even narrower directivity (beam spread). Features Applications l Small emission spot l Optical switches l Automatic control system L7868: 400 m L7868-01: 150 m l Uniform emission pattern l Narrow directivity: L7868-02 Absolute maximum ratings (Ta=25 C, unless otherwise noted) Parameter Symbol Condition Reverse voltage V4 Forward current I. Forward current Ta > 25 C derating rate Pulse forward Pulse width=10 s I.2 current Duty ratio=1 % Pulse forward Ta > 25 C current derating rate Power dissipation P Operating Topr temperature Storage temperature Tstg Value 3 60 Unit V mA 0.8 mA/C 0.5 A 7 mA/C 180 mW -30 to +85 C -40 to +100 C Electrical and optical characteristics (Ta=25 C) Parameter Peak emission wavelength Spectral half width (FWHM) Radiant flux Radiant illuminance Forward voltage Pulse forward voltage Reverse current Symbol Condition L7868 L7868-01 L7868-02 Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit lp I.=20 mA 650 670 700 650 670 700 650 670 700 nm Dl I.=20 mA - 20 - - 20 - - 20 - nm fe PV. I.=20 mA I.=20 mA I.=20 mA 0.35 - 0.45 0.1 1.9 2.2 0.15 - 0.2 1.9 2.2 0.35 - 0.45 0.4 1.9 2.2 mW mW/cm V V.2 I.=0.5 A - 4.3 5.5 - 4.3 5.5 - 4.3 5.5 V V4=3 V I.=20 mA, 10 % to 90 % I.=20 mA, 90 % to 10 % - - 10 - - 10 - - 10 A - 0.06 0.1 - 0.06 0.1 - 0.06 0.1 s - 0.06 0.1 - 0.06 0.1 - 0.06 0.1 s I4 Rise time tr Fall time tf 1 L7868 series Red LED Emission spectrum 100 L7868/-02 10 1 L7868-01 20 0.1 650 700 750 10 800 100 Directivity 10 20 RELATIVE RADIANT OUTPUT (dB) 30 L7868 80 % 60 % 50 40 50 40 % 60 60 L7868-01 20 % 70 70 80 80 90 90 +2 +1 0 -1 -2 -3 -4 -5 -40 -20 0 20 40 60 KLEDB0244EA 100 KLEDB0243EA Allowable forward current vs. ambient temperature (Typ.) 100 80 60 40 20 0 -40 -20 0 20 40 100 KLEDB0027EB L7868-02 5.4 0.2 4.7 0.1 4.65 0.1 GLASS WINDOW 3.0 0.1 3.6 0.2 5.4 0.2 PULSE WIDTH=10 s 0.01 0.01 80 AMBIENT TEMPERATURE (C) L7868/-01 PULSE WIDTH=1 s 0.1 60 KLEDB0245EA (Typ. Ta=25 C) 1 5 4 Dimensional outlines (unit: mm) Allowable forward current vs. duty ratio 10 80 AMBIENT TEMPERATURE (C) RELATIVE RADIANT OUTPUT (%) 3 4.5 0.2 40 (Typ. IF=50 mA) +3 100 % 30 2 KLEDB0242EA Radiant output vs. ambient temperature (Typ. Ta=25 C) 10 1 FORWARD VOLTAGE (V) KLEDB0238EA L7868-02 10 FORWARD CURRENT (mA) WAVELENGTH (m) 20 100 1 1000 RELATIVE ALLOWABLE FORWARD CURRENT (%) 0 600 0.45 LEAD 0.1 1 10 13.5 PULSE WIDTH=100 s 13.5 ALLOWABLE FORWARD CURRENT (A) FORWARD CURRENT (mA) RADIANT FLUX (mW) 40 (Typ.Ta=25 C, tw=100 s, 0.1 %) 1000 80 60 Forward current vs. forward voltage (Typ. Ta=25 C, tw=100 s, 0.1 %) 6.65 0.2 100 RELATIVE RADIANT OUTPUT (%) Radiant flux vs. forward current (Typ. Ta=25 C, IF=20 mA) 0.45 LEAD 100 2.54 0.2 2.54 0.2 DUTY RATIO (%) KLEDB0246EA COMMON TO CASE COMMON TO CASE KLEDA0075EA KLEDA0076EA 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. (c)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: Smidesvagen 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 2 Cat. No. KLED1038E01 Dec. 2001 DN