L1939 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – 300 μm emission spot, no electrode in emission area

LED
Infrared LED
L1939 series
φ300 µm emission spot, no electrode in emission area
Features
l Small emission spot: φ300 µm
l Wide directivity
l High reliability, long life
Applications
l Auto-focus
l Optical switches
l Mark sensors
s Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Condition
Forward current
Reverse voltage
Pulse forward current
Operating temperature
IF
VR
IFP
Topr
Pulse width=10 µs
Duty ratio=1 %
Storage temperature Tstg
* L1939 is guaranteed to resist temperature cycle test of up to 5 cycles.
s Electrical and optical characteristics (Ta=25 °C)
Parameter
Symbol
Condition
Min.
Peak emission
wavelength
λp IF=50 mA
870
Spectral half width
∆λ IF=50 mA
-
Forward voltage
VF IF=50 mA
-
Pulse forward voltage VFP IF=1.5 A
-
Reverse current
IR VR=5 V
-
Radiant flux
φe IF=50 mA
8.0
Radiant illuminance
PE IF=50 mA
-
Rise time
tr IF=50 mA, 10 to 90 %
-
Fall time
tf IF=50 mA, 90 to 10 %
-
L1939
Typ.
890
50
1.4
2.7
-
10.0
0.4
0.45
0.45
Value
100
5
1.5
-30 to +85
-40 to +100 *
Max.
920
-
1.5
3.4
5
-
-
0.7
0.7
L1939-04
Min. Typ. Max.
870
890
920
-
50
-
-
1.4
1.5
-
2.7
3.4
-
-
5
2.0
2.8
-
-
0.35
-
-
0.45
0.7
-
0.45
0.7
Unit
mA
V
A
°C
°C
Unit
nm
nm
V
V
µA
mW
mW/cm²
µs
µs