Panasonic CNZ2179 Datasheet

Reflective Photosensors (Photo Reflectors)

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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

Input (Light
emitting diode)

Reverse voltage (DC)
Forward current (DC)
Power dissipation
Collector current

Output (Photo
transistor)

Collector to emitter voltage
Emitter to collector voltage
Collector power dissipation

Temperature

*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.

Operating ambient temperature
Storage temperature T

Symbol

V

R

I

F

*1

P

D

I

C

V

CEO

V

ECO

*2

P

C

T

opr

stg

Ratings Unit

3V
50 mA
75 mW
20 mA
20 V

5V

100 mW
–25 to +80 ˚C
–30 to +85 ˚C

5.2

13.0

8.0

0.85max.

(2-0.5)

(7.6)

14

23

(Note)

1. Tolerance unless otherwise specified is ±0.3

2. ( ) Dimension is reference

(2-0.5)

(2.54)

1432

Pin connection

Unit : mm

10 min.

Electrical Characteristics (Ta = 25˚C)

Parameter

Input
characteristics

Output characteristics

Transfer
characteristics

*1

Transfer characteristics measurement circuit

(Ambient light is shut off completely.)

I

F

Forward voltage (DC)
Reverse current (DC)
Collector cutoff current
Collector current
Response time
Collector to emitter saturation voltage

V

CC

I

C

R

L

Standard white paper

(Reflective ratio 90%)

Symbol

Conditions min typ max Unit

VFIF = 50mA 1.3 1.5 V

IRVR = 3V 10 µA

I

CEOVCE

*1

I

C

t

, t

r*2

V

CE(sat)IF

d = 5 mm

= 10V 0.2 µA

V

= 5V, IF = 20mA, RL = 100Ω 180 1500 µA

CC

*3

V

= 10V, IC = 0.1mA, RL = 100Ω

f

CC

20 µs

= 50mA, IC = 0.1mA 0.5 V

*2

Time required for the collector current to increase from

10% to 90% of its final value.

*3

Time required for the collector current to decrease from

90% to 10% of its initial value.

90%
10%

t

t

r

f

1

CNZ2179 Reflective Photosensors (Photo Reflectors)

IF , I

— Ta

60

(mA)

C

50

, I

F

40

30

20

10

Forward current, collector current I

0

0 20406080100

– 25

C

I

F

I

C

Ambient temperature Ta (˚C )

I

— I

C

2

10

10

(mA)

C

1

–1

10

Collector current I

F

VCE = 5V
Ta = 25˚C

60

50

40

(mA)

F

30

20

Forward current I

10

0

0.4 0.8 1.2 1.6 2.42.0

0

Forward voltage VF (V)

2

10

10

(mA)

C

1

–1

10

Collector current I

I

I

F

C

— V

— V

F

CE

IF = 30mA

20mA

10mA

Ta = 25˚C

Ta = 25˚C

V

— Ta

1.6

1.2

(V)

F

0.8

Forward voltage V

0.4

0
– 40 – 20

F

0 20406080100

Ambient temperature Ta (˚C )

I

— Ta

160

120

(%)

C

80

40

C

Relative output current I

IF = 50mA

10mA

1mA

V

= 5V

CC

= 20mA

I

F

= 100Ω

R

L

–2

10

–1

10

10

1

(µA)

CEO

–1

10

–2

Dark current I

10

–3

10

2

11010

Forward current IF (mA)

I

— Ta

CEO

VCE = 10V

0 20406080100– 40 – 20

Ambient temperature Ta (˚C )

2

–2

10

–1

10

11010

Collector to emitter voltage VCE (V)

t

— I

r

3

10

2

10

(µs)

r

10

C

Rise time t

1

–1

10

–2

10

–1

Collector current IC (mA)

VCC = 10V
Ta = 25˚C

RL = 1kΩ

11010

500Ω
100Ω

2

0

100

80

(%)

C

60

40

20

Relative output current I

0

0

0 20406080100– 40 – 20

Ambient temperature Ta (˚C )

I

— d

C

V

= 5V

CC

Ta = 25˚C
RL = 100Ω
IF = 20mA

Distance d (mm)

161284