
SIR-320ST3F
Sensors
Electrical and optical characteristics (Ta = 25 ° C)
Parameter
Optical output
Emitting strength
Forward voltage
Reverse current
Peak light emitting wavelength
Spectral line half width
Half-viewing angle
Pesponse time
Cut-off frequency
Symbol
P O
I E
V F
I R
λ P
?λ
θ 1 / 2
tr·tf
f C
Min.
?
5.6
?
?
?
?
?
?
?
Typ.
9
?
1.2
?
940
40
± 18
1.0
1.0
Max.
?
?
1.5
10
?
?
?
?
?
Unit
mW
mW/sr
V
μ A
nm
nm
deg
μ s
MHz
I F = 50mA
I F = 50mA
I F = 50mA
V R = 3V
I F = 50mA
I F = 50mA
I F = 50mA
I F = 50mA
I F = 50mA
Conditions
Electrical and optical characteristic curves
100
100
? 25 ° C
80
60
40
20
80
60
40
20
0 ° C
25 ° C
50 ° C
75 ° C
100
80
60
40
20
0
? 20 0 20 40 60 80
AMBIENT TEMPERATURE : Ta ( ° C)
100
0 0
1
FORWARD VOLTAGE : V F (V)
2
0
850
900 950 1000
OPTICAL WAVELENGTH : λ (nm)
1050
FIg.1 Forward current falloff
Fig.2 Forward current vs. forward voltage
Fig.3 Wavelength
50
200
40
100
30
50
20
20
10
10
0
0
20
40
60
80
100
? 20
0
20
40
60
80
100
FORWARD CURRENT : I F (mA)
Fig.4 Emitting strength vs.
forward current
AMBIENT TEMPERATURE : Ta ( ° C)
Fig.5 Radiant intensity vs.
ambient temperature
Rev.B
2/3