Infrared LED
L12771 series
Peak emission wavelength: 1.3
μm
The L12771 series is a long wavelength LED using InGaAs material. Peak emission wavelength is 1.3
μm,
making the L12771
series suitable as a reference light source for detection of moisture.
Features
Peak emission wavelength: 1.3
μm
High radiant output power
Applications
Reference light source for moisture meter
Light source for detecting photosensitive material
Absolute maximum ratings (Ta=25 °C unless otherwise noted)
Parameter
Reverse voltage
Forward current
Forward current derating rate
Pulse forward current
Pulse forward current derating
rate
Power dissipation
Operating temperature
Storage temperature
Soldering conditions
Symbol
V
R
I
F
-
I
FP
-
P
Topr
Tstg
-
Condition
Value
1
80
1.1
1.0
13
150
-30 to +85
-40 to +100
260 °C or less, within 5 s, at least 1 mm away from
lead roots
Unit
V
mA
mA/°C
A
mA/°C
mW
°C
°C
-
Ta > 25 °C
Pulse width=10
μs
Duty ratio=1%
Ta > 25 °C
No condensation
No condensation
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the
product within the absolute maximum ratings.
Electrical and optical characteristics (Ta=25 °C)
Parameter
Peak emission wavelength
Spectral half width
Radiant
fl
ux
Forward voltage
Pulse forward voltage
Reverse current
Cutoff frequency*
1
Symbol
λp
∆λ
ϕe
V
F
V
FP
I
R
fc
Condition
I
F
=50 mA
I
F
=50 mA
I
F
=50 mA
I
F
=50 mA
I
F
=1 A
V
R
=1 V
I
F
=50 mA ± 10 mAp-p
Min.
1.25
-
2.0
-
-
-
10
L12771
Typ.
1.3
90
2.8
1.0
1.9
-
15
Max.
1.35
140
-
1.5
2.8
10
-
L12771-01
Min.
Typ.
1.25
1.3
-
90
2.2
3.1
-
1.0
-
1.9
-
-
10
15
Max.
1.35
140
-
1.5
2.8
10
-
Unit
μm
nm
mW
V
V
μA
MHz
*1:
Frequency at which the light output decreases by 3 dB from the light output at 100 kHz
www.hamamatsu.com
1
Infrared LED
L12771 series
Emission spectrum
100
90
80
(Typ. Ta=25 °C, I
F
=50 mA)
Radiant flux vs. forward current
100
(Typ. Ta=25 °C, tw=100 μs, 0.1%)
Relative light output (%)
Radiant flux (mW)
70
60
50
40
30
20
10
0
1000
1100
1200
1300
1400
1500
10
L12771-01
L12771
1
0.1
10
100
1000
Wavelength (nm)
KLEDB0332EA
Forward current (mA)
KLEDB0389EA
Pulse forward current vs. pulse forward voltage
1000
(Typ. Ta=25 °C, tw=100 μs, 0.1%)
Directivity
20°
30°
40°
10°
0°
10°
(Typ. Ta=25 °C)
20°
30°
40°
50°
L12771
60°
70°
L12771-01
80°
90°
100
Pulse forward current (mA)
50°
60°
70°
100
80°
90°
100
80
60
40
20
0
20
40
60
80
Relative light output (%)
KLEDB0391EA
10
0.5
1.0
1.5
2.0
2.5
Pulse forward voltage (V)
KLEDB0390EA
2
Infrared LED
L12771 series
Dimensional outline (unit: mm)
L12771
ɸ5.4 ± 0.2
ɸ4.7 ± 0.1
Glass window
ɸ3.0 ± 0.1
3.6 ± 0.2
L12771-01
ɸ5.4 ± 0.2
ɸ4.65 ± 0.1
13.5 ± 1
4.5 ± 0.2
ɸ0.45 ± 0.05
Lead
ɸ2.54 ± 0.2
Common to case
Standard packing type:
Paper box (200 pieces/box)
KLEDA0090EB
ɸ0.45 ± 0.05
Lead
ɸ2.54 ± 0.2
Common to case
Standard packing type:
Paper box (200 pieces/box)
KLEDA0091EB
Related information
www.hamamatsu.com/sp/ssd/doc_en.html
Precautions
· Notice
· Metal, ceramic, plastic package / Precautions
Technical information
· LED / Technical information
Information described in this material is current as of April, 2014.
Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the
information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always
contact us for the delivery specification sheet to check the latest specifications.
Type numbers of products listed in the delivery specification sheets or supplied as samples may have a suffix "(X)" which means preliminary specifications or
a suffix "(Z)" which means developmental specifications.
The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that
one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product
use.
Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission.
www.hamamatsu.com
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
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: Thorshamnsgatan 35 16440 Kista, 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
China: Hamamatsu Photonics (China) Co., Ltd.: 1201 Tower B, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86) 10-6586-6006, Fax: (86) 10-6586-2866
13.5 ± 1
6.65 ± 0.2
Cat. No. KLED1068E01 Apr. 2014 DN
4
Microcontroller MCU
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