CNZ2253 Datasheet, PDF (1/2 Pages) Panasonic Semiconductor – Reflective Photosensor

Reflective Photosensors (Photo Reflectors)
CNZ2253
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.
Features
High sensitivity
Small size and light weight
Applications
Detection of paper, film and cloth Optical mark reading
Detection of position and edge
Detection of coin and bill
Start, end mark detection of magnetic tape
Absolute Maximum Ratings (Ta = 25˚C)
Parameter
Symbol Ratings Unit
Reverse voltage (DC) V_R
3
V
Input (Light
Forward current (DC)
emitting diode)
I_F
50
mA
Power dissipation
P_D*1
75
mW
Collector to emitter voltage V_CEO 20
V
Output (Photo Emitter to collector voltage VECO
5
V
transistor) Collector current
I_C
30
mA
Collector power dissipation P_C*2
100
mW
Temperature
Operating ambient temperature T_opr –25 to +85 ˚C
Storage temperature
T_stg –30 to +100 ˚C
Mark for indicating
LED side
7.5±0.2
(3.2)
Unit : mm
10.6±0.3
9.6±0.3
ø2.2±0.2
2
1
(7.2)
,,, ^{ø0.45±0.05}
ø0.3±0.05
3 ^{*2-0.9±0.15}
4
(Note)
1 23
4
1. ( ) Dimension is reference
Pin connection
2. * is dimension at the root of leads
*1 _{Input power derating ratio is}
1.0 mW/˚C at Ta ≥ 25˚C.
*2 _{Output power derating ratio is}
1.34 mW/˚C at Ta ≥ 25˚C.
Electrical Characteristics (Ta = 25˚C)
Parameter
Symbol
Conditions
min typ max Unit
Forward voltage (DC)
Input
characteristics ^{Reverse current (DC)}
Capacitance between terminals
V_F I_F = 50mA
I_R V_R = 3V
C_t V_R = 0V, f = 1MHz
1.2 1.5 V
10 µA
50
pF
Output characteristics Collector cutoff current
I_CEO V_CE = 10V
0.5 µA
Transfer ^{Collector current}
characteristics ^{Response time}
I_C*1*2 V_CC = 5V, I_F = 10mA, R_L = 100Ω
t_r*3 , t_f*4 V_CC = 10V, I_C = 1mA, R_L = 100Ω
3
30 mA
150
µs
Collector to emitter saturation voltage V_CE(sat) I_F = 50mA, I_C = 1mA
1.5 V
*1 _{IC classifications}
*1 _{Transfer characteristics measurement circuit}
Class
Q
R
S
(Ambient light is shut off completely)
I_C (mA)
3 to 9
6 to 18
12 to 30
*3 _{Time required for the collector current to increase}
from 10% to 90% of its final value.
*4 _{Time required for the collector current to decrease}
from 90% to 10% of its initial value.
t_r
90%
10%
t_f
I_F
,,,,
V_CC
I_C
,,^R,^L
d = 3 mm
Standard white paper
(Reflective ratio 90%)
1