CNZ2179 Datasheet, PDF (1/2 Pages) Panasonic Semiconductor – Reflective Photosensor

Reflective Photosensors (Photo Reflectors)
CNZ2179
Reflective Photosensor
Overview
CNZ2179 is a reflective photosensor with a long focal distance,
in which a high efficiency GaAs infrared light emitting diode is used
as a light emitting element and a high sensitivity Si phototransistor
is used as the light detecting element.
Features
Long focal distance : 6 mm (typ.)
Visible light cutoff resin is used
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 current
I_C
20
mA
Output (Photo Collector to emitter voltage VCEO 20
V
transistor) Emitter to collector voltage V_ECO
5
V
Collector power dissipation P_C*2
100
mW
Temperature ^{Operating ambient temperature Topr –25 to +80 ˚C}
Storage temperature
T_stg –30 to +85 ˚C
*1 _{Input power derating ratio is 1.25 mW/˚C at Ta ≥ 25˚C.}
*2 _{Output power derating ratio is 1.67 mW/˚C at Ta ≥ 25˚C.}
Unit : mm
13.0
0.85max.
(2-0.5)
(7.6)
1
4
2
3
,,,, (2-0.5)
(2.54)
1 23
4
Pin connection
(Note)
1. Tolerance unless otherwise specified is ±0.3
2. ( ) Dimension is reference
Electrical Characteristics (Ta = 25˚C)
Parameter
Symbol
Conditions
min typ max Unit
Input
Forward voltage (DC)
V_F I_F = 50mA
1.3 1.5 V
characteristics _{Reverse current (DC)}
I_R V_R = 3V
10 µA
Output characteristics Collector cutoff current
I_CEO V_CE = 10V
0.2 µA
Collector current
Transfer
characteristics ^{Response time}
I_C*1 V_CC = 5V, I_F = 20mA, R_L = 100Ω
180
1500 µA
t_r*2 , t_f*3 V_CC = 10V, I_C = 0.1mA, R_L = 100Ω
20
µs
Collector to emitter saturation voltage V_CE(sat) I_F = 50mA, I_C = 0.1mA
0.5 V
*1 _{Transfer characteristics measurement circuit}
(Ambient light is shut off completely.)
*2 _{Time required for the collector current to increase from}
10% to 90% of its final value.
I_F
I_C ^VCC
*3 _{Time required for the collector current to decrease from}
90% to 10% of its initial value.
,,
,,^RL,
d = 5 mm
Standard white paper
(Reflective ratio 90%)
90%
10%
t_r
t_f
1