29 by mohamed.yahia.yonis

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									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                                                              Applications
     l Small emission spot                                                   l Automatic control systems
       L2791 : φ400 µm                                                       l Optical switches
       L2791-03: φ160 µm                                                     l Auto-focus
     l Uniform emission: L2791/-02
     l Narrow directivity: L2791/-02




 s Absolute maximum ratings (Ta=25 °C)
      Parameter                 Symbol        Condition                                        Value                                      Unit
 Forward current                  IF                                                            80                                        mA
 Reverse voltage                  VR                                                             3                                         V
                                         Pulse width=10 µs
 Pulse forward current           IFP                                                            0.5                                        A
                                         Duty ratio=1 %
 O p era ting te m pe ratu re    Topr                                                      -30 to +85                                      °C
 Storage temperature             Tstg                                                     -40 to +100 *                                    °C
 * L2791-03 is guaranteed to resist temperature cycle test of up to 5 cycles.


 s Electrical and optical characteristics (Ta=25 °C)
                                                                       L2791                  L2791-02                 L2791-03
        Parameter               Symbol        Condition                                                                                   Unit
                                                                Min.    Typ. Max.      Min.     Typ. Max.       Min.     Typ. Max.
 Peak emission
                                 λp      IF=50 mA               850    880      910     850     880     910     850      880    910       nm
 wavelength
 Spectral half width             ∆λ      IF=50 mA                -      60       -       -      60       -       -       60      -      nm
 Forward voltage                 VF      IF=50 mA                -     1.5      1.7      -     1.5      1.7      -      1.5     1.7      V
 Pulse forward voltage           VFP     IF=0.5 A                -     3.2      4.0      -     3.2      4.0      -      3.2     4.0      V
 Reverse current                  IR     VR=3 V                  -       -      10       -       -      10       -        -     10      µA
 Radiant flux                    φe      IF=50 mA               1.6    2.0       -      1.6    2.0       -      4.0     5.0      -      mW
 Radiant illuminance             PE      IF=50 mA                -     1.3       -       -     2.0       -       -        -      -     mW/cm2
 Rise time                        tr     IF=50 mA, 10 to 90 %    -     0.12     0.2      -     0.12     0.2      -      0.12    0.2      µs
 Fall time                         tf    IF=50 mA, 90 to 10 %    -     0.12     0.2      -     0.12     0.2      -      0.12    0.2      µs




                                                                                                                                                      1
                                                                                                                                                                             Infrared LED                                L2791 series

    s Emission spectrum                                                                                               s Radiant flux vs. forward current
                                                                          (Typ. Ta=25 ˚C, IF=50 mA)                                                                                                 (Typ. Ta=25 ˚C, tw=100 µs, 0.1 %)
                                     100                                                                                                                        100
       RELATIVE RADIANT OUTPUT (%)




                                      80                                                                                                                                                                  L2791-03




                                                                                                                            RADIANT FLUX (mW)
                                                                                                                                                                 10
                                      60



                                      40
                                                                                                                                                                  1
                                                                                                                                                                                                                   L2791, L2791-02
                                      20



                                       0                                                                                                                         0.1
                                        700                    800                  900           1000                                                                 1                           10                    100                        1000

                                                           WAVELENGTH (nm)                                                                                                              FORWARD CURRENT (mA)
                                                                                                        KLEDB0158EA                                                                                                                                    KLEDB0159EA




    s Forward current vs. forward voltage                                                                             s Directivity
                                                                     (Typ. Ta=25 ˚C, tw=100 µs, 1 %)
                                     1000                                                                                                                                                                                      (Typ. Ta=25 ˚C)
                                                                                                                                                                                                    10˚ 0˚ 10˚
                                                                                                                                                                                              20˚                       20˚
                                                                                                                                                                                        30˚                                     30˚
                                                                                                                                                                                 40˚                                                    40˚
        FORWARD CURRENT (mA)




                                                                                                                                                                           50˚                                                                50˚
                                                                                                                                                                      60˚                                                                       60˚
                                      100                                                                                                                                                   L2791-02                    L2791
                                                                                                                                                                 70˚                                                                                70˚

                                                                                                                                                                80˚                                                                                  80˚
                                                                                                                                                                                                                  L2791-03 *
                                                                                                                                                                90˚                                                                            90˚
                                                                                                                                                                  100 80               60     40    20        0    20    40        60     80 100
                                       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                                                                          s Allowable forward current vs. ambient temperature
                                                                                      (Typ. IF=50 mA)                                                                                                                                         (Typ.)
                                      +1
                                                                                                                       RELATIVE ALLOWABLE FORWARD CURRENT (%)




                                                                                                                                                                100
     RELATIVE RADIANT OUTPUT (dB)




                                       0
                                                                                                                                                                 80



                                                                                                                                                                 60
                                       -1


                                                                                                                                                                 40

                                       -2
                                                                                                                                                                 20



                                       -3                                                                                                                         0
                                         -40   -20         0         20     40        60     80    100                                                                 -40        -20          0         20        40         60         80         100

                                                AMBIENT TEMPERATURE (˚C)                                                                                                          AMBIENT TEMPERATURE (˚C)
                                                                                                        KLEDB0162EA                                                                                                                                    KLEDB0027EB




2
                                                                                                                                                                                        Infrared LED       L2791 series

       s Allowable forward current vs. duty ratio
                                                                                             (Typ. Ta=25 ˚C)
                                           10000
          ALLOWABLE FORWARD CURRENT (mA)




                                                                                          PULSE WIDTH=1 µs
                                            1000

                                                                                           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                                                                                               ➁ L2791-02                                                                       ➂ L2791-03
                                                            5.4 ± 0.2                                                                       5.4 ± 0.2                                                                     5.4 ± 0.1




                                                                                                                                                                                                                                                     2.3 ± 0.3
                                                            4.7 ± 0.1                                                                      4.65 ± 0.1                                            CLEAR EPOXY RESIN       4.2 ± 0.1
                                                           GLASS WINDOW
                                                                          3.6 ± 0.2




                                                             3.0 ± 0.1
                                                                                                                                                                      6.65 ± 0.2
                                                                                                                                                          4.5 ± 0.2




                                                                                                                                                                                                                                       1.12 ± 0.1
                                                                                                                                                                                                                                                      13.5
                                                                                                                                                                                                             0.45
                                                                                                                                                                                                            LEAD
                                                                          13.5




                                                                                                                                                                      13.5




                                                    0.45                                                                        0.45                                                                                     2.54 ± 0.2
                                                   LEAD                                                                        LEAD

                                                            2.54 ± 0.2                                                                     2.54 ± 0.2




                                                                                                                                                                                                   COMMON TO CASE


                  COMMON TO CASE                                                                                  COMMON TO CASE



                                                                                          KLEDA0060EA                                                                              KLEDA0059EA                                                             KLEDA0058EA




                                                                                                    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
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