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L8957 Datasheet(PDF) 2 Page - Hamamatsu Corporation

Part # L8957
Description  Low cost LED ideal for optical encoders
PDF  2 Pages
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Manufacturer  HAMAMATSU [Hamamatsu Corporation]
Direct Link  http://www.hamamatsu.com
Logo HAMAMATSU - Hamamatsu Corporation

L8957 Datasheet(HTML) 2 Page - Hamamatsu Corporation

  L8957 Datasheet HTML 1Page - Hamamatsu Corporation L8957 Datasheet HTML 2Page - Hamamatsu Corporation  
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Infrared LED
L8957
2
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, 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.: 8, 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
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. ©2002 Hamamatsu Photonics K.K.
Cat. No. KLED1039E01
Aug. 2002 DN
2
RELATIVE RADIANT OUTPUT (%)
(Typ. Ta=25 ˚C)
80
%
40 %
60 %
20
%
20˚
10˚
0˚
10˚
20˚
90˚
80˚
50˚
40˚
30˚
70˚
60˚
90˚
80˚
50˚
40˚
30˚
70˚
60˚
100 %
0
20
40
60
80
100
-3
-2
0
-1
+1
+2
AMBIENT TEMPERATURE (˚C)
(Typ. IF=50 mA)
-40
-20
0
20
(Typ.)
40
60
80
100
0
40
60
80
100
AMBIENT TEMPERATURE (˚C)
20
0
-4
-3
-2
-1
0
2
3
1
POSITION ON IMAGE SENSOR (mm)
4
20
40
60
80
100
L
LED
IMAGE
SENSOR
L=5 mm
(Typ. Ta=25 ˚C)
L=8 mm
L=10 mm
KLEDA0077EA
KLEDB0248EA
I Dimensional outline (unit: mm)
I Light intensity distribution
I Allowable forward current vs. ambient temperature
I Directivity
I Forward current vs. forward voltage
I Radiant output vs. ambient temperature
0
0.5
1.0
1.5
2.0
40
20
60
80
100
FORWARD VOLTAGE (V)
(Typ. Ta=25 ˚C)
KLEDB0227EA
KLEDB0247EA
KLEDB0228EA
KLEDB0229EB
4.65 ± 0.15
5.4 ± 0.2
2.54 ± 0.2
0.45
LEAD
COMMON TO CASE



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