*1 For 3 seconds at the position of 1.4mm from the
surface of resin edge
“
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that occur in equipment using any of SHARP's devices, shown in catalogs,
data books, etc. Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device.
”
PT491/PT491F/PT493/PT493F
s
Electro-optical Characteristics
Parameter
*2
( Ta = 25˚C )
Symbol
Conditions
V
CE
= 2V
E
V
= 2lx
V
CE
= 10V, E
e
= 0
I
C
= 0.8mA,
E
e
= 1mW/cm
2
-
V
CE
= 2V, I
C
= 5mA
R
L
= 100Ω
-
I
C
I
CEO
V
CE ( sat )
λ
p
t
r
t
f
∆θ
MIN.
0.3
0.2
-
-
-
-
-
-
TYP.
0.6
0.4
-
-
800
860
80
70
± 40
MAX.
1.3
0.8
10
- 6
1.0
-
-
400
350
-
Unit
mA
mA
A
V
nm
nm
µ
s
˚
Collector current
Collector dark current
PT491/PT493
PT491F/PT493F
*2
Collector-emitter saturation voltage
Peak sensitivity
wavelength
Response time
Half intensity angle
PT491/PT493
PT491F/PT493F
Rise time
Fall time
*2 E
e
, E
V
: Illuminance, irradiance by CIE standard light source A ( tungsten lamp)
Fig. 1 Collector Power Dissipation vs.
Ambient Temperature
80
Collector power dissipation P
C
( mW )
70
60
50
40
30
20
10
0
- 25
Fig. 2 Collector Dark Current vs.
Ambient Temperature
10
- 4
5 V
CE
= 10V
-5
10
5
10
- 6
5
10
- 7
5
10
- 8
5
10
- 9
5
10
-
10
Collector dark current I
CEO
(A)
5
5
- 25
10
- 11
0
25
50
Ambient temperature T
75 85
( ˚C )
100
0
a
25
50
75
Ambient temperature T
a
( ˚C )
100
Fig. 3 Relative Collector Current vs.
Ambient Temperature
175
V
CE
= 2V
Relative collector current ( % )
E
V
= 21x
150
Fig. 4 Collector Current vs. Irradiance
50
V
CE
= 2V
T
a
= 25˚C
PT491
PT493
Collector current I
C
( mA )
20
125
10
PT491F
PT493F
100
5
75
2
50
- 25
0
25
50
75
Ambient temperature T
a
( ˚C )
100
1
2
5
10
-1
2
Irradiance E
e
( mW/cm
2
)
5
1
PT491/PT491F/PT493/PT493F
Fig. 5-a Collector Current vs. Collector-emitter
( PT491/PT493 )
Voltage
50
45
Collector current I
C
( mA )
40
E
e
=
35 0.5mW/cm
2
30
25
20
15
10
5
0
0
1
2
3
4
5
6
Collector-emitter voltage V
CE
( V)
7
0.25mW/
cm
2
0.2mW/cm
2
0.15mW/cm
2
0.1mW/cm
2
P
C
( MAX. )
T
a
= 25˚C
( mA )
Fig. 5-b Collector Current vs. Collector-emitter
( PT491F/PT493F )
Voltage
50
45
40
35
30
25
20
15
10
5
0
0
1
P
C
( MAX. )
0.25mW/cm
2
0.2mW/cm
2
0.15mW/cm
2
0.1mW/cm
2
2
3
4
5
6
Collector-emitter voltage V
CE
( V)
7
E
e
=
0.5mW/cm
2
T
a
= 25˚C
Fig. 6 Spectral Sensitivity
100
T
a
= 25˚C
80
Relative sensitivity ( % )
Fig. 7 Response Time vs. Load Resistance
1000
V
CE
= 2V
I
C
= 5mA
T
a
= 25˚C
100
t
r
t
f
60
PT491
PT493
PT491F
PT493F
40
Response time (
µ
s )
Collector current I
C
t
d
10
t
s
20
0
500
600
700 800 900 1000 1100 1200
Wavelength
λ
( nm )
1
10
100
1000
Load resistance R
L
(
Ω
)
5000
Test Circuit for Response Time
Fig. 8 Sensitivity Diagram
- 20˚
- 10˚
0˚
100
- 30˚
Relative sensitivity ( % )
80
( T
a
= 25˚C )
+ 10˚
+ 20˚
+ 30˚
- 40˚
Output Input
- 50˚
V
CC
R
L
Output
t
d
t
r
t
s
t
f
90%
- 60˚
10%
- 70˚
- 80˚
- 90˚
60
+ 40˚
40
+ 50˚
+ 60˚
20
+ 70˚
+ 80˚
0
Angular displacement
θ
+ 90˚
PT491/PT491F/PT493/PT493F
Fig. 9 Collector-emitter Saturation Voltage
( PT491/PT493 )
vs. Irradiance
2.2
T
a
= 25˚C
2.0
Collector-emitter saturation voltage
V
CE ( sat )
( V )
Collector-emitter saturation voltage
V
CE ( sat )
( V )
1.8
1mA
2mA
3mA
I
C
= 0.5mA
5mA
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.01
0.1
Irradiance E
e
( mW/cm
2
)
1
2.0
1.8
I
C
= 0.5mA
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.01
0.1
Irradiance E
e
( mW/cm
2
)
1
Fig.10 Collector-emitter Saturation Voltage
vs. Irradiance ( PT491F/PT493F )
2.2
T
a
= 25˚C
1mA
2mA
3mA
Please refer to the chapter “ Precautions for Use.”
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