RPI-124
Photointerrupter, Ultraminiature type
Applications
Optical control equipment
Cameras
Floppy disk drives
Features
1) Ultra-small.
2) High-precision position detection
(slit width = 0.15mm).
3) Minimal influence from stray light.
4)
Low collector-emitter saturation voltage.
Absolute maximum ratings (Ta=25°C)
Electrical and optical characteristics (Ta=25°C)
Electrical and optical characteristics curves
External dimensions (Unit : mm)
Notes:
1. Unspecified tolerance
shall be ±0.2 .
2. Dimension in parenthesis are
show for reference.
Anode
Cathode
Collector
Emitter
Cross-section A-A
Gap
Optical axis center
Through hole
A
A
2-R0.3
Max.0.3
C0.7
4 (bottom)
2.6
3.9
1
1
2.3
3.3
4-0.2
(3)
(1.5)
4-0.5
0.15±0.1
4-0.4
(2)
2
4-φ0.8
3
2.5±0.5
Fig.1 Relative output current vs.
distance ( )
RELATIVE COLLECTOR CURRENT : Ic (
%
)
DISTANCE : d (mm)
0
0
25
50
75
100
125
12 3 4 5
d
Fig.4 Relative output current vs.
distance ( )
RELATIVE COLLECTOR CURRENT : Ic (
%
)
DISTANCE : d (mm)
0
0
25
50
75
100
125
12 3 4 5
d
Fig.2 Forward current falloff
FORWARD CURRENT : IF (mA)
AMBIENT TEMPERATURE : Ta (°C)
−20 0 40 60 8020 100
0
20
10
30
40
50
Fig.10 Output characteristics
tdtrtf
10%
90%
RL
VCC
td :
tr :
tf :
Delay time
Rise time (time for output current to rise from
10% to 90% of peak current)
Fall time (time for output current to fall from 90%
to 10% of peak current)
Input
Input
Output
Output
COLLECTOR CURRENT : Ic (mA)
COLLECTOR TO EMITTER VOLTAGE : VCE (V)
0
0.5
1
1.5
2
2.5
2046108
40mA
30mA
20mA
10mA
IF=50mA
Fig.11 Response time measurement circuit
Fig.8 Response time vs.
collector current
RESPONSE TIME : t (µs)
COLLECTOR CURRENT : Ic (mA)
1010.10.05
10
100
1
RL=1kΩ
RL=500Ω
RL=100Ω
Fig.9 Dark current vs.
ambient temperature
DARK CURRENT : ID (nA)
AMBIENT TEMPERATURE : Ta (°C)
100
1000
100
10
1
0.1
7550250−25
VCE=30V
VCE=20V
VCE=10V
Fig.6 Relative output vs. ambient
temperature
RELATIVE COLLECTOR CURRENT : Ic (
%
)
AMBIENT TEMPERATURE : Ta (°C)
−40 −20 0 20406080100
0
20
40
60
80
100
120
160
140
Fig.7 Collector current vs.
forward current
COLLECTOR CURRENT : Ic (mA)
FORWARD CURRENT : IF (mA)
01020304050
0
1
2
3
4
5VCE=5V
0.40.2 0.6 1.00.8 1.2 1.4 1.81.6
0
20
40
10
30
50
FORWARD VOLTAGE : VF (V)
FORWARD CURRENT : IF (mA)
Fig.3 Forward current vs. forward
voltage
0.40.2 0.6 1.00.8 1.2 1.4 1.81.6
0
20
40
10
30
50
75
°C
50
°C
25
°C
0
°C
−25
°C
POWER DISSIPATION /
COLLECTOR POWER DISSIPATION : P
D
/ Pc (mW)
AMBIENT TEMPERATURE : Ta (°C)
−25
0
20
40
60
80
100
025 50 75 85 100
Fig.5 Power dissipation / collector power
dissipation vs. ambient temperature
PD PC
Parameter Symbol
VF
IR
ICEO
λ
P
IC
VCE(sat)
tr tf
Min.
−
−
−
−
0.3
−
−
Typ.
1.3
−
−
800
−
−
10
Max.
1.6
10
0.5
−
1.5
0.3
−
Unit
VI
F=50mA
VR=5V
VCE=10V
−
VCE=5V, IF=20mA
IF=20mA, IC=0.15mA
VCC=5V, IF=20mA, RL=100Ω
µA
µA
nm
mA
V
µs
Conditions
Forward voltage
Reverse current
Dark current
Peak sensitivity wavelength
Collector current
Collector-emitter saturation
voltage
Response time
Input
charac-
teristics
Output
charac-
teristics
Transfer
charac-
teristics
Cut-off frequency
∗ Non-coherent Infrared light emitting diode used.
Peak light emitting wavelength
λ
P
fCIF=50mA
−
−1−MHz
−950 −nm
Maximum sensitivity wavelength
λ
P−800 −nm
∗ This product is not designed to be protected against electromagnetic wave.
VCC=5V, IC=1mA, RL=100Ω
tr tf
Response time −10 −µs
Photo
transistor
Infrared
light
emitter
diode
Parameter Symbol
IC
VCEO
PD
VR
IF
PC
VECO
Topr
Tstg
Limits
−25 to +85
−30 to +100
50
5
80
30
4.5
30
80
Unit
mA
V
mW
V
V
mA
mW
°C
°C
Forward current
Reverse voltage
Power dissipation
Collector-emitter voltage
Emitter-collector voltage
Collector current
Collector power dissipation
Operating temperature
Storage temperature
Input(LED)
Output
photo-
transistor
()
Appendix
Appendix1-Rev1.1
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
