L1909_15 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – Infrared LED

Infrared LED
L1909
TO-46 type GaAlAs infrared LED
Features
High radiant output power
Direct modulation possible
High reliability and long life
Applications
Automatic control systems
Optical switches
Mark sensors
Optical remote control
Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Condition
Value
Unit
Forward current
IF
80
mA
Reverse voltage
VR
5
V
Pulse forward current
IFP
Pulse width=10 μs
Duty ratio=1%
1.0
A
Operating temperature
Topr
Storage temperature
Tstg
-30 to +85
°C
-40 to +100*
°C
* Guaranteed to resist temperature cycle test of up to 5 cycles
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
Min.
Typ.
Max.
Unit
Peak emission wavelength
λp IF=50 mA
870
890
920
nm
Spectral half width
∆λ IF=50 mA
-
80
-
nm
Forward voltage
VF IF=50 mA
-
1.4
1.5
V
Pulse forward voltage
VFP IF=1.0 A
-
2.8
3.4
V
Reverse current
IR VR=5 V
-
-
5
μA
Radiant flux
ɸe IF=50 mA
8
10
-
mW
Radiant illuminance
PE IF=50 mA
-
1.0
-
mW/cm²
Rise time
tr IF=50 mA, 10 to 90%
-
0.45
0.7
μs
Fall time
tf IF=50 mA, 90 to 10%
-
0.45
0.7
μs
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