Features
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High radiant output power
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Direct modulation possible
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High reliability and long life
Applications
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Auto-focus
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Automatic control systems
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Optical switches
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Mark sensors
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Optical remote control
LED
Infrared LED
TO-46 type GaAlAs infrared LED
L1915 series
L1915 is mounted on a TO-46 metal stem potted with clear epoxy resin. L1915-01 is encapsulated in a TO-46 package sealed with a glass lens
window. L1915-02 is also encapsulated in a TO-46 package but sealed with a flat glass window.
■ Absolute maximum ratings (Ta=25 °C)
Parameter Symbol Condition Value Unit
Forward current IF100 mA
Reverse voltage VR5 V
Pulse forward current IFP Pulse width=10 µs
Duty ratio=1 % 1.5 A
Operating temperature Topr -30 to +85 °C
Storage temperature Tstg -40 to +100 * °C
* L1915 is guaranteed to resist temperature cycle test of up to 5 cycles.
■ Electrical and optical characteristics (Ta=25 °C)
L1915 L1915-01 L1915-02
Parameter Symbol Condition Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
Peak emission wavelength λpIF=50 mA 870 890 920 870 890 920 870 890 920 nm
Spectral half width ∆λ IF=50 mA -80 - - 80 - - 80 -nm
Forward voltage VFIF=50 mA - 1.4 1.5 - 1.4 1.5 - 1.4 1.5 V
Pulse forward voltage VFP IF=1.5 A -3.1 3.8 -3.1 3.8 -3.1 3.8 V
Reverse current IRVR=5 V --5--5--5 µA
Radiant flux φeIF=50 mA 810 -3.6 4.5 -3.6 4.5 -mW
Radiant illuminance PEIF=50 mA -1.0- -2.7- -1.0-mW/cm
2
Rise time tr IF=50 mA, 10 to 90 % -0.45 0.7 -0.45 0.7 -0.45 0.7 µs
Fall time tf IF=50 mA, 90 to 10 % - 0.45 0.7 - 0.45 0.7 - 0.45 0.7 µs
1
Infrared LED
L1915 series
1 10 100 1000 10000
1
10
100
1000
FORWARD CURRENT (mA)
RADIANT FLUX (mW)
(Typ. Ta=25 ˚C, tw=100 µs, 0.1 %)
L1915-01/-02
L1915
■ Emission spectrum
KLEDB0117EB
■ Radiant flux vs. forward current
KLEDB0139EB
700 800 900 1000
0
20
40
60
80
100
WAVELENGTH (nm)
RELATIVE RADIANT OUTPUT (%)
(Typ. Ta=25 ˚C, IF=50 mA)
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
%
L1915
L1915-02
L1915-01
■ Forward current vs. forward voltage
KLEDB0140EB
■ Directivity
KLEDB0141EA
1.0 1.5 2.0 2.5 3.53.0
1
10
100
10000
1000
FORWARD VOLTAGE (V)
FORWARD CURRENT (mA)
(Typ. Ta=25 ˚C, tw=100 µs, 0.1 %)
-40 -20 0 20
(Typ.)
40 60 80 100
0
40
60
80
100
AMBIENT TEMPERATURE (˚C)
RELATIVE ALLOWABLE FORWARD CURRENT (%)
20
■ Radiant output vs. ambient temperature
KLEDB0150EA
■ Allowable forward current vs. ambient temperature
KLEDB0027EB
AMBIENT TEMPERATURE (˚C)
RELATIVE RADIANT OUTPUT (dB)
(Typ. I
F
=50 mA)
-40 -20 0 20 40 60 80 100
-5
-4
-2
0
-3
-1
+1
+3
+2
2
Infrared LED
L1915 series
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
Information furnished by HAMAMATSU is believed to be reliable . How ever, 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.
Cat. No. KLED1013E03
Jun. 2006 DN
4.65 ± 0.1
4.5 ± 0.2
6.65 ± 0.213.5
5.4 ± 0.2
2.54 ± 0.2
COMMON TO CASE
0.45
LEAD
1.12 ± 0.1
CLEAR EPOXY RESIN
5.4 ± 0.1
4.2 ± 0.1
0.45
LEAD
2.54 ± 0.2
2.3 ± 0.3
13.5
COMMON TO CASE
5.4 ± 0.2
4.7 ± 0.1
GLASS WINDOW
3.0 ± 0.1
3.6 ± 0.2
13.5
2.54 ± 0.2
COMMON TO CASE
0.45
LEAD
■ Dimensional outlines (unit: mm)
KLEDA0009ED KLEDA0052EB KLEDA0053EB
L1915 L1915-01 L1915-02
■ Allowable forward current vs. duty ratio
KLEDB0287EA
0.01 0.1 1 10 100
10
100
1000
10000
DUTY RATIO (%)
ALLOWABLE FORWARD CURRENT (mA)
(Typ. Ta=25 ˚C)
PULSE WIDTH=1 µs
PULSE WIDTH=100 µs
PULSE WIDTH=10 µs
3
