User guide
SIR-568ST3F
Sensors
2/3
!
!!
!Electrical and optical characteristics (Ta = 25°C)
Parameter Symbol
P
O
I
E
V
F
I
R
λ
P
∆λ
θ
1/2
Min.
−
18
−
−
−
−
−
Typ. Max.
−
−
2.1
10
−
−
−
Unit
mW I
F
=50mA
I
F
=50mA
I
F
=50mA
V
R
=2V
I
F
=20mA
I
F
=20mA
I
F
=50mA
mW/sr
V
µA
nm
nm
deg
fc −−I
F
=30mA DC+20mA p-p
MHz
tr −−I
F
=50mA
ns
tf −
13
38
1.6
−
850
40
±13
50
8.0
6.0 − I
F
=50mA
ns
Conditions
Optical output
Emitting strength
Forward voltage
Reverse current
Peak light emitting wavelength
Spectral line half width
Half-viewing angle
Rise time
Fall time
Cut-off frequency
Response time
!
!!
!
Electrical and optical characteristic curves
−25 0 20 40 60 80 100
20
80
100
120
60
40
0
AMBINET TEMPERATURE : Ta (°C)
FORWARD CURRENT : I
F
(mA)
Fig.1 Forward current falloff
Fig.2 Forward current vs. forward voltage
FORWARD CURRENT : I
F
(mA)
FORWARD VOLTAGE : V
F
(V)
0.2
0
10
20
30
40
50
0.40 0.6 0.8 1.0 1.2 1.4 2.01.6 1.8
75°C
50°C
25°C
0°C
−25°C
RELATIVE OPTICAL OUTPUT : Po (%)
OPTICAL WAVELENGTH : λ (
nm)
780 840 900
0
1.0
0.5
Ta=25°C
I
F
=20mA
Fig.3 Wavelength characteristics
FORWARD CURRENT (
mA)
10 100 1000
1
10
100
500
EMITTING STRENGTH : IE (
mW / sr)
Ta=25°C
tw=100µsec
T=10msec
Fig.4 Emitting strength vs.
forward current
Fig.5 Relative emitting strength vs.
ambient temperature
AMBINET TEMPERATURE : Ta (°C)
0−25 25 50 75 100
300
100
50
10
RELATIVE EMITTING STRENGTH : I
E
(%)
FREQUENCY : f (MHz)
1 2 4 10 20 40 100
−6
−4
−2
0
GAIN : (dB)
Fig.6 Frequency characteristics



