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LED
Infrared LED
L4492
Low forward voltage LED for camera auto-focus
Features Applications
l High radiant output power l Low forward voltage: 2.4 V (IF=1.0 A) l High radiant output power by constant voltage drive l Small emission spot (reflector size)
l Auto-focus
s Absolute maximum ratings (Ta=25 C)
Parameter Forward current Reverse voltage Symbol IF VR IFP Topr Tstg
Condition
Pulse forward current Operating temperature Storage temperature
Pulse width=10 s Duty ratio=1 %
Value 80 3 1.0 -30 to +85 -40 to +100 *
Unit mA V A C C
* Guaranteed to resist temperature cycle test of up to 5 cycles.
s Electrical and optical characteristics (Ta=25 C)
Parameter Peak emission wavelength Spectral half width Forward voltage Pulse forward voltage Reverse current Radiant flux Radiant illuminance Rise time Fall time Symbol p VF VFP IR e PE tr tf
Condition IF=50 mA IF=50 mA IF=50 mA IF=1.0 A VR=3 V IF=50 mA IF=50 mA IF=50 mA, 10 to 90 % IF=50 mA, 90 to 10 %
Min. 880 6.0 -
Typ. 900 60 1.35 2.4 8.0 1.1 0.45 0.45
Max. 930 1.45 2.8 30 0.7 0.7
Unit nm nm V V A mW mW/cm2 s s
Infrared LED
s Emission spectrum
(Typ. Ta=25 C, IF=50 mA) 100
1000
L4492
s Radiant flux vs. forward current
(Typ. Ta=25 C, tw=100 s, 0.1 %)
s Forward current vs. forward voltage
1000 (Typ. Ta=25 C, tw=100 s, 0.1 %)
RELATIVE RADIANT OUTPUT (%)
80
100
60
FORWARD CURRENT (mA)
RADIANT FLUX (mW)
100
40
10
20
0 700
800
900
1000
1 10
100
1000
10 1.0
1.5
2.0
2.5
3.0
WAVELENGTH (nm)
KLEDB0138EB
FORWARD CURRENT (mA)
KLEDB0197EA
FORWARD VOLTAGE (V)
KLEDB0198EA
s Directivity
(Typ. Ta=25 C) 20 10 0 100 % 80 % 10 20
s Radiant output vs. ambient temperature
(Typ. IF=50 mA) +3
s Allowable forward current vs. ambient temperature
(Typ.)
RELATIVE ALLOWABLE FORWARD CURRENT (%)
RELATIVE RADIANT OUTPUT (dB)
30
30
+2 +1 0 -1 -2 -3 -4 -5 -40
100
80
40
60 %
40
60
50 60 70 80 90
40 %
50 60
40
20 %
70 80 90
20
-20
0
20
40
60
80
100
0 -40 -20 0 20 40 60 80 100
RELATIVE RADIANT OUTPUT (%)
KLEDB0199EA
AMBIENT TEMPERATURE (C)
KLEDB0200EA
AMBIENT TEMPERATURE (C)
KLEDB0027EB
s Allowable forward current vs. duty ratio
10 (Typ. Ta=25 C)
s Dimensional outline (unit: mm)
2.3 0.3 1.12 0.1
2.54 0.2 5.4 0.1 CLEAR EPOXY RESIN 4.2 0.1
ALLOWABLE FORWARD CURRENT (A)
PULSE WIDTH=1 s 1 PULSE WIDTH=10 s PULSE WIDTH=100 s 0.1
0.45 LEAD
0.01 0.01
0.1
1
10
100
DUTY RATIO (%)
KLEDB0038EA
COMMON TO CASE
13.5
KLEDA0009ED
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, 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: 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
Cat. No. KLED1030E01 Apr. 2001 DN

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