L9338 is an infrared LED developed for optical switches and is available at a low cost due to the improved manufacturing process.
Features
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High reliability
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Low price
Applications
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Optical switches
LED
Infrared LED
For optical switches
L9338
1
■ Absolute maximum ratings (Ta=25 °C, unless otherwise noted)
Parameter Symbol Condition Value Unit
Reverse voltage VR5V
Forward current IF80 mA
Forward current reduction rate -Ta>25 °C 1.1 mA/°C
Pulse forward current IFP Pulse width=10 µs
Duty ratio=1 % 1.0 A
Pulse forward current reduction rate - Ta>25 °C 13 mA/°C
Power dissipation P150 mW
Operating temperature Topr -30 to +85 °C
Storage temperature Tstg -40 to +100 *1°C
*1: Guaranteed to resist temperature cycle test of up to 5 cycles.
■ Electrical and optical characteristics (Ta=25 °C)
Parameter Symbol Condition Min. Typ. Max. Unit
Peak emission wavelength λpI
F=50 mA 920 945 970 nm
Spectral half width ∆λ IF=50 mA -60 -nm
Forward voltage VFIF=50 mA - 1.34 1.42 V
Pulse forward voltage VFP IF=1 A -3.1 3.8 V
Reverse current IRVR=5 V - - 5 µA
Radiant flux φeIF=50 mA 10 15 -mW
Cut-off frequency *2fc IF=50 mA ± 4 mAp-p 0.1 0.3 - MHz
*2: Frequency at which the optical output drops by -3 dB from that at 10 kHz.
Infrared LED
L9338
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) 8152-375-0, Fax: (49) 8152-265-8
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 int. 6, 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.
Type numbers of products listed inthe specification sheets or supplied as samples may hav e a suffix "(X)" which means tentative specifications or a suffix "(Z)"
which means dev elopmental specifications. ©2010 Hamamatsu Photonics K.K.
Cat. No. KLED1044E02
May 2010 DN
2
■ Emission spectrum
KLEDB0255EA
■ Dimensional outline (unit: mm)
KLEDA0081EA
■ Radiant flux vs. forward current
KLEDB0256EA
■ Forward current vs. forward voltage
KLEDB0257EB
■ Directivity
KLEDB0258EA
■ Radian output vs. ambient
temperature
KLEDB0259EA
■ Allowable forward current vs.
ambient temperature
KLEDB0254EA
■ Allowable forward current vs.
duty ratio
KLEDB0038EA
0.01
DUTY RATIO (%)
ALLOWABLE FORWARD CURRENT (A)
0.01 0.1 1 10 100
0.1
1
10
PULSE WIDTH=1 µs
(Typ.
Ta=25
˚C)
PULSE WIDTH=100 µs
PULSE WIDTH=10 µs
880 900 940 980920 960 1000
0
40
20
60
80
100
WAVELENGTH (nm)
RELATIVE RADIANT OUTPUT (%)
(Typ. Ta=25 ˚C, I
F
=50 mA)
10 100 1000
1
10
100
1000
FORWARD CURRENT (mA)
RADIANT FLUX (mW)
(Typ. Ta=25 ˚C, tw=100 µs, 1 %)
1.0 1.5 2.0 2.5 3.0 3.5 4.0
10
100
1000
FORWARD VOLTAGE (V)
FORWARD CURRENT (mA)
(Typ. Ta=25 ˚C, tw=100 µs, 1 %)
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˚
80 %
40 %
60 %
20 %
100 %
-40 -20 0 20 40 60 80 100
-2
0
-3
-1
1
2
AMBIENT TEMPERATURE (˚C)
RELATIVE RADIANT OUTPUT (dB)
(Typ. I
F
=50 mA)
-40 -20 0 20
(Typ.)
40 60 80 100
0
40
60
80
100
AMBIENT TEMPERATURE (˚C)
RELATIVE ALLOWABLE FORWARD CURRENT (%)
20
1.12 ± 0.1
CLEAR EPOXY RESIN
5.4 ± 0.1
4.2 ± 0.1
0.45 ± 0.05
LEAD
2.54 ± 0.2
2.3 ± 0.3
13.5 ± 1
COMMON TO CASE
