EE-SY190/191
Reflective Photomicrosensor uses
Fresnel Lenses to Enhance Sensing
Characteristics
High-precision optical technology
ensures excellent limited sensing range
and sensing position characteristics
Ideal for paper/OHP detection in OA/CP
markets
Available in top-view model (EE-SY190)
and side-view model (EE-SY191)
Compact package (Length 18mm x
Width 6mm x Height 9 mm)
Ordering Information
Appearance
Sensing method Sensing distance
Reflective
4.0 mm (min)
4.5 mm (typ)
5.0 mm (max)
Reflective
4.0 mm (min)
4.5 mm (typ)
5.0 mm (max)
Phototransistor
Approx. 0.88 g
EE-SY191
Output configuration Weight
Phototransistor
Approx. 0.95 g
Part number
EE-SY190
EE-SY190/191
EE-SY190/191
Specifications
ABSOLUTE MAXIMUM RATINGS (T
A
= 25°C (77°F))
Item
Emitter
Forward current
Pulse forward current
Reverse voltage
Receiver
Collector-emitter voltage
Emitter-collector voltage
Collector current
Collector dissipation
Ambient temperature
Operating
Storage
Soldering
Symbol
I
F
I
FP
V
R
V
CEO
V
ECO
I
C
P
C
Topr
Tstg
Tsol
Rated value
50 mA (See Note 1.)
1 A (See Note 2.)
4V
30 V
---
20 mA
100 mW (See Note 1.)
-25°C to 85°C (-13
°
F to 185
°
F) (See Note 3.)
-40°C to 100°C (-40
°
F to 212
°
F)
260°C (500
°
F) (10 seconds max.)
Note: 1. Refer to Engineering Data if the ambient temperature is not within the normal room temperature. I
F
, P
C
and P
OUT
must be
derated according to the Temperature Characteristics curves contained within the Engineering Data section.
2. The pulse width is 10
µs
maximum with a frequency of 100 Hz.
3. To be used on in applications where no freezing or condensation occurs.
TYPICAL APPLICATION
The EE-SY190 microsensor detects the size and
edge of overhead transparency film or white paper
without detecting the background surface.
Paper or film
Plotter Head
5.0 mm
5.5 mm
EE-SY190
EE-SY190/191
EE-SY190/191
CHARACTERISTICS (T
A
= 25°C (77°F))
Item
Emitter
Forward voltage
Reverse current
Receiver
Symbol
V
F
I
R
Value
1.2 V typ., 1.5 V max.
10
µA
max.
940 nm typ.
50
µA
min., 180
µA
typ.,
600
µA
max.
Condition
I
F
= 30 mA
V
R
= 4 V
I
F
= 30 mA
I
F
= 20 mA, V
CE
= 5 V
White paper with a reflection
factor of 90%, d = 4.5 mm
(See Note 1.)
V
CE
= 5 V, 0
x
I
F
= 20 mA, V
CE
= 5 V without
object
V
CE
=5 V
V
CC
= 5 V, R
L
= 1 kΩ, I
L
= 200
µA
V
CC
= 5 V, R
L
= 1 kΩ, I
L
= 200
µA
Peak emission wavelength
λ
P(L)
Light current (See Note 1.) I
L
Dark current
Leakage current
Peak spectral sensitivity
wavelength
Rising time (See Note 2.)
Falling time (See Note 2.)
I
D
I
LEAK
λ
P(P)
tr
tf
2 nA typ., 100 nA max.
1
µA
max.
850 nm typ.
30
µs
typ.
30
µs
typ.
Note: 1. The letter “d” indicates the distance between the top surface of the sensor and the sensing object.
2. The illustration below shows the rising time, tr, and the falling time, tf.
Input
Output
0
tr
Input
0
90%
10%
t
tf
R
L
t
V
CC
Output
EE-SY190/191
EE-SY190/191
SENSING CHARACTERISTICS (T
A
= 25°C (77°F))
Item
Light-convergent characteristics
Sensing position characteristics
Symbol
L
d
d
Value
+4.0
/
-3.0
Condition
mm typ.,
+5.5
/
-3.5
mm max.
L defined as I
L
= 20% assuming I
L
=
d defined as distance for I
L
to change
from 20% (80%) to 50% of the peak I
L.
Center: I
L
= 50% in X and Y directions
(see Fig. 2).
Sensing object can be either of the two:
Diffuse reflective object (paper).
Regular reflective object (mirror).
100% at d = 4.5 mm (see Fig. 1).
±0.6
mm typ.,
±1.6
mm max.
Recommended sensing distance
4.0 mm min., 4.5 mm typ., 5.0 mm max.
Fig. 1
Fig. 2
d + (0.4)
Relative light current
Relative light current
Sensing distance
Sensing distance
EE-SY190/191
EE-SY190/191
Engineering Data
TEMPERATURE RATING
60
RELATIVE LIGHT CURRENT VS.
AMBIENT TEMPERATURE
CHARACTERISTICS (TYPICAL)
120
I
F
= 20 mA
V
CE
= 5 V
Collector dissipation (mW)
50
Relative light current I
L
(%)
I
F
110
100
90
Forward current I
F
(mA)
40
30
P
C
100
20
50
80
10
0
-40
70
60
-40
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
Ambient temperature T
A
(°C)
Ambient temperature T
A
(°C)
SENSING DISTANCE
300
CHARACTERISTICS (TYPICAL)
T
A
= 25°
I
F
= 20 mA
V
CE
= 5 V
Sensing object: White paper
(reflection factor 90%)
SENSING POSITION
250
Direction X
Direction Y
600µm 500µm
CHARACTERISTICS (TYPICAL)
Light current I
L
(
µ
A)
250
200
Light current I
L
(
µ
A)
200
80%
150
50%
100
150
100
50
50
20%
0
-3
T
A
= 25°
I
F
= 20 mA
V
CE
= 5 V
Sensing object: White
paper (reflection factor
90%)
-2
-1
0
1
2
3
0
2
4
6
8
18
Distance d (mm)
Distance d (mm)
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