L12771_15 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – Infrared LED

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
Symbol
Condition
Value
Unit
Reverse voltage
VR
1
V
Forward current
IF
80
mA
Forward current derating 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 derating
rate
-
Ta > 25 °C
13
mA/°C
Power dissipation
P
150
mW
Operating temperature
Storage temperature
Topr No condensation
Tstg No condensation
-30 to +85
°C
-40 to +100
°C
Soldering conditions
-
260 °C or less, within 5 s, at least 1 mm away from
lead roots
-
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
Symbol
Condition
L12771
L12771-01
Unit
Min. Typ. Max. Min. Typ. Max.
Peak emission wavelength
λp IF=50 mA
1.25 1.3 1.35 1.25 1.3 1.35
μm
Spectral half width
∆λ IF=50 mA
-
90
140
-
90
140
nm
Radiant flux
ϕe IF=50 mA
2.0 2.8
-
2.2
3.1
-
mW
Forward voltage
VF
IF=50 mA
-
1.0
1.5
-
1.0
1.5
V
Pulse forward voltage
VFP IF=1 A
-
1.9
2.8
-
1.9
2.8
V
Reverse current
Cutoff frequency*¹
IR
VR=1 V
-
-
10
-
-
10
μA
fc
IF=50 mA ± 10 mAp-p
10
15
-
10
15
-
MHz
*1: Frequency at which the light output decreases by 3 dB from the light output at 100 kHz
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