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features l small emission spot l7868: 400 m L7868-01: 150 m l uniform emission pattern l narrow directivity: l7868-02 applications l optical switches l automatic control system led red led small emission spot, red led using current confined chip l7868 series l7868/-02 are red leds with a microball lens bonded to the current-confined structure chip surface. L7868-01 uses the same stru cture 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). 1

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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) 908-231-0 960, 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, unit ed kingdom, telephone: (44) 1707-294888, fax: (44) 1707-325777 north europe: hamamatsu photonics norden ab: smidesv?gen 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 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. red led l7868 series cat. no. kled1038e01 dec. 2001 dn 5.4 ?0.2 4.7 ?0.1 3.0 ?0.1 3.6 ?0.2 13.5 2.54 ?0.2 common to case 0.45 lead glass window 4.65 ?0.1 4.5 ?0.2 6.65 ?0.2 13.5 5.4 ?0.2 2.54 ?0.2 common to case 0.45 lead 10 100 (typ. ta=25 ? c, tw=100 ?, 0.1 % ) 1000 0.1 1 10 100 forward current (ma) radiant flux (mw) L7868-01 l7868/-02 12 34 (typ.ta=25 ? c, tw=100 s, 0.1 % ) 5 1 10 100 1000 forward voltage (v) forward current (ma) kledb0243ea kledb0244ea kledb0245ea kledb0027eb allowable forward current vs. ambient temperature allowable forward current vs. duty ratio dimensional outlines (unit: mm) kledb0246ea kleda0075ea relative radiant output (%) (typ. ta=25 ? c) 20 ? 10 ? 10 ? 20 ? 90 ? 80 ? 50 ? 40 ? 30 ? 70 ? 60 ? 90 ? 80 ? 50 ? 40 ? 30 ? 70 ? 60 ? l7868 l7868-02 L7868-01 20 % 40 % 60 % 80 % 100 % -40 -20 0 20 (typ.) 40 60 80 100 0 40 60 80 100 ambient temperature ( ? c) relative allowable forward current (%) 20 0.01 duty ratio (%) allowable forward current (a) 0.01 0.1 1 10 100 0.1 1 10 (typ. ta=25 ? c) pulse width=1 s pulse width=100 s pulse width=10 s -40 -20 40 100 020 6080 +3 -1 +2 -2 +1 0 -3 -4 -5 (typ. i f =50 ma) ambient temperature ( ? c) relative radiant output (db) kleda0076ea 600 650 700 750 (typ. ta=25 ? c, i f =20 ma) 800 0 20 40 60 80 100 wavelength ( m) relative radiant output (%) l7868/-01 l7868-02

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