Reflective Photosensors (Photo Reflectors)
CNZ2253
(ON2253)
Reflective Photosensor
Overview
CNZ2253 is a photosensor detecting the change of reflective light
in which a high efficiency GaAs infrared light emitting diode is used
as the light emitting element, and a high sensitivity Si Darlington
phototransistor is used as the light detecting element. The two
elements are located parallel in the same direction and objects are
detected when passing in front of the device.
3.0鹵0.2
Mark for indicating
LED side
7.5鹵0.2
(3.2)
4.0鹵0.2
Unit : mm
10.2 min. 6.0鹵0.2
1.7鹵0.2
酶2.2鹵0.2
Features
High sensitivity
Small size and light weight
Optical mark reading
Detection of coin and bill
Applications
Detection of paper, film and cloth
Detection of position and edge
(7.2)
2
3
酶0.45鹵0.05
酶0.3鹵0.05
*2-0.9鹵0.15
Start, end mark detection of magnetic tape
1
Absolute Maximum Ratings
(Ta = 25藲C)
Parameter
Reverse voltage (DC)
Input (Light
Forward current (DC)
emitting diode)
Power dissipation
Collector to emitter voltage
Output (Photo Emitter to collector voltage
transistor)
Collector current
Collector power dissipation
Temperature
Operating ambient temperature
Storage temperature
Symbol Ratings
V
R
I
F
P
D*1
V
CEO
V
ECO
I
C
P
C
*2
Unit
V
mA
mW
V
V
mA
mW
藲C
藲C
(Note)
1
2 3
4
1. ( ) Dimension is reference
Pin connection
2. * is dimension at the root of leads
3
50
75
20
5
30
100
鈥?5 to +85
*1
T
opr
T
stg
鈥?0 to +100
Input power derating ratio is
1.0 mW/藲C at Ta
鈮?/div>
25藲C.
*2
Output power derating ratio is
1.34 mW/藲C at Ta
鈮?/div>
25藲C.
Electrical Characteristics
(Ta = 25藲C)
Parameter
Forward voltage (DC)
Input
Reverse current (DC)
characteristics
Capacitance between terminals
Output characteristics Collector cutoff current
Symbol
V
F
I
R
C
t
I
CEO
I
F
= 50mA
V
R
= 3V
V
R
= 0V, f = 1MHz
V
CE
= 10V
3
150
1.5
50
0.5
30
Conditions
min
typ
1.2
max
1.5
10
Unit
V
碌A
pF
碌A
mA
碌s
V
Collector current
I
C*1*2
V
CC
= 5V, I
F
= 10mA, R
L
= 100鈩?/div>
Transfer
t
r*3
, t
f*4
V
CC
= 10V, I
C
= 1mA, R
L
= 100鈩?/div>
characteristics Response time
Collector to emitter saturation voltage V
CE(sat)
I
F
= 50mA, I
C
= 1mA
*1
I
C
classifications
Class
I
C
(mA)
Q
3 to 9
R
6 to 18
S
12 to 30
*2
Transfer characteristics measurement circuit
(Ambient light is shut off completely)
I
C
V
CC
d = 3 mm
I
F
*3
*4
90%
10%
t
f
t
r
Note) The part number in the parenthesis shows conventional part number.
;;
;;
;;
;
;
;
;;
;
;;
;
R
L
Time required for the collector current to increase
from 10% to 90% of its final value.
Time required for the collector current to decrease
from 90% to 10% of its initial value.
;
;;
4
Standard white paper
(Reflective ratio 90%)
0.5
10.6鹵0.3
9.6鹵0.3
1
1
2
3
