Panasonic ON2175 Reflective photosensor Datasheet

Reflective Photosensors (Photo Reflectors)
ON2175
Reflective Photosensor
Unit : mm
(R2.3) 4.0±0.3 ø2.2±0.3
2-ø1.2±0.15
(4-R0.3)
Outline
ON2175 is a sensor which consists of a high efficiency GaAs
infrared light emitting diode and a high sensitivity Si phototransistor
which are arranged together in the same direction. It detects the
beginning and end of a tape based on changes in the amount of light
reflected from a prism which is situated outside of the sensor.
5.0 +0
–0.3
6.5±0.3
8.3±0.3
6.0±0.15
Tape end sensor for DAT
Fast response
Small size and light weight
,,
,
,,,,
Features
2-ø1.2±0.15
(C0.3)
ø1.2 +0
–0.3
2-0.4±0.2
(3.75)
4
2
3
1
3.0±0.3
5.0 min. 8.3±0.3
1.0±0.3
4.0±0.3
(C0.2)
3.75±0.15
8.0 +0
–0.3
7.0±0.3
2-0.15 +0.2
–0.1
(3.75)
Absolute Maximum Ratings (Ta = 25˚C)
Parameter
Symbol Ratings
Reverse voltage (DC)
Input (Light
Forward current (DC)
emitting diode)
Power dissipation
Unit
VR
3
V
IF
50
mA
75
mW
IC
20
mA
Output (Photo Collector to emitter voltage
transistor)
Emitter to collector voltage
VCEO
30
V
VECO
5
V
Collector power dissipation
PC*2
100
mW
Operating ambient temperature
Topr
–25 to +85
˚C
Storage temperature
Tstg –30 to +100
˚C
Collector current
Temperature
PD
*1
1
2 3
4
Pin connection
(Note) ( ) Dimension is reference
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.
*1
Electrical Characteristics (Ta = 25˚C)
Parameter
Symbol
Conditions
min
typ
max
Unit
Forward voltage (DC)
Input
characteristics Reverse current (DC)
VF
IF = 50mA
1.5
V
IR
VR = 3V
10
µA
Output characteristics Collector cutoff current
ICEO
VCE = 10V
0.2
µA
IC*1
VCE = 5V, IF = 20mA, RL = 100Ω
Collector current
Transfer
Response time
tr , tf*2 VCC = 10V, IC = 0.5mA, RL = 100Ω
characteristics
Collector to emitter saturation voltage VCE(sat) IF = 50mA, IC = 0.1mA
*1 I
C
*2
Measurement method
(Unit : mm )
2– 1.5
ON2175
µs
6
0.5
V
Switching time measurement circuit
VCC
2.5
1
(Input pulse)
Sig.OUT
,,
,,,,
,,,,,,,,,
,,,,,,
1
Sig.IN
µA
30
50Ω
prism
RL
(Output pulse)
90%
10%
td
tr
tf
td : Delay time
tr : Rise time (Time required for the collector current to increase from
10% to 90% of its final value)
tf : Fall time (Time required for the collector current to decrease from
90% to 10% of its initial value)
1