ROHM RPI-246 Technical data

RPI-246

External dimensions (Unit : mm)

Photointerrupter, Small type

Absolute maximum ratings (Ta=25°C)

)
LED

(

Input

Output

photo-

Input

charac-

Output

charac-

Transfer

charac-

Infrared

light

emitter

Photo

transistor

Parameter Symbol
Forward current
Reverse voltage
Power dissipation
Collector-emitter voltage

)

Emitter-collector voltage
Collector current

transistor

(

Collector power dissipation
Operating temperature
Storage temperature

IF
VR
PD

VCEO
VECO

I

C

PC

Topr
Tstg

−25 to +85

−30 to +85

Electrical and optical characteristics (Ta=25°C)

Typ.

V

IR

ICEO

λ

IC

tr tf

fC

tr tf

λ

Min.

−

F

−

−

−

P

0.35

−

−

− 1 − MHz

λ

P

−

P

−

1.3

−

−

800

−

−

10

950

800

Parameter Symbol
Forward voltage
Reverse current

teristics

Dark current
Peak sensitivity wavelength

teristics

Collector current
Collector-emitter saturation

voltage

teristics

VCE(sat)

Response time
Cut-off frequency

Peak light emitting wavelength

diode

Response time − 10 −

Maximum sensitivity wavelength

Limits

50

5
80
30

4.5
30
80

Max.

1.6
10

0.5

−

1.2

0.4

−

−

−

Applications

Unit

mA

V

mW

V
V

mA

mW

°C
°C

Unit

VI

V

µA

V

µA

F=50mA

R=5V
CE=10V

Conditions

nm

V

mA

CE=5V, IF=20mA

V

F=20mA, IC=0.2mA

I

CC=5V, IF=20mA, RL=100Ω

µs

V

IF=50mA

∗ Non-coherent Infrared light emitting diode used.

nm

VCC=5V, IC=1mA, RL=100Ω

µs

∗ This product is not designed to be protected against electromagnetic wave.

nm

Floppy disk drives
Movie equipment
Cameras
Printers

Features

1) Compact package based on the
double-mold.

2) Method High resolution
(slit width = 2.0mm)

3) Gap between emitter and detector
is 2.0mm.

−

−

4.2

5.2

Min.5

(1.5)

-0.15

+0.2

0.2

2.8

Gap

(4)

Through hole

5

4

4-φ0.8

2.5

2

1

A

Optical axis center

Cross-section A-A

C0.5

(1.6)

2-C0.3

1.3

A

4-0.2

φ1.5

4-0.5

+0.1

-0

(2.5)

Anode

Collector

Notes:

1. Unspecified tolerance

shall be ±0.2 .

2. Dimension in parenthesis are

0.1

Cathode

Emitter

show for reference.

Electrical and optical characteristics curves

)

%

100

75

50

25

RELATIVE COLLECTOR CURRENT : Ic (

0

010.5 1.5 2.52
DISTANCE : d (mm)

Fig.1 Relative output current vs.

distance ( )

)

%

100

75

50

25

RELATIVE COLLECTOR CURRENT : Ic (

0

010.5 1.5 2.52
DISTANCE : d (mm)

Fig.4 Relative output current vs.

distance ( )

F=20mA

I
V

CE=5V

I

F=20mA

V

CE=5V

50

40

d

3

d

3

30

20

10

FORWARD CURRENT : IF (mA)

0

120

/ Pc (mW)

100

D

80

60

40

20

0

POWER DISSIPATION /

COLLECTOR POWER DISSIPATION : P

Fig.5 Power dissipation / collector power

−20 0 20 40 60 80 100
AMBIENT TEMPERATURE : Ta (°C)

Fig.2 Forward current falloff

P

D PC

−20 0 20 40 60 80 100
AMBIENT TEMPERATURE : Ta (°C)

dissipation vs. ambient temperature

50

40

30

20

10

FORWARD CURRENT : IF (mA)

0

0.40 0.8 1.2 2.01.6

FORWARD VOLTAGE : VF (V)

Fig.3 Forward current vs. forward

voltage

)

%

100

80

60

40

20

RELATIVE COLLECTOR CURRENT : Ic (

0

−25 0 25 50 75 100
AMBIENT TEMPERATURE : Ta (°C)

Fig.6 Relative output vs. ambient

temperature

−25°C
0°C

25°C
50°C
75°C

VCE=5V

F=20mA

I

V

2.5

2.0

1.5

1.0

0.5

COLLECTOR CURRENT : Ic (mA)

0

0 1020304050

FORWARD CURRENT : IF (mA)

Fig.7 Collector current vs.

forward current

2.0

1.0

COLLECTOR CURRENT : Ic (mA)

0

COLLECTOR TO EMITTER VOLTAGE : VCE (V)

4861020

CE=5V

T

a=25°C

IF=50mA

40mA
30mA

20mA

10mA

Fig.10 Output characteristics

1000

100

10

RESPONSE TIME : t (µs)

1

0.1 1 10 100
COLLECTOR CURRENT : Ic (mA)

Fig.8 Response time vs.

collector current

VCCInput

Input

Output

RL

Output

td

td: Delay time
tr:Rise time (time for output current to rise

from 10% to 90% of peak current)

tf:Fall time (time for output current to fall

from 90% to 10% of peak current)

tr

Ta=25°C
Vcc=5V

RL=1kΩ

RL=500Ω

RL=100Ω

90%
10%

tf

Fig.11 Response time measurement circuit

1000

100

10

1

DARK CURRENT : ID (nA)

0.1

0 25 50 75 100−25

AMBIENT TEMPERATURE : Ta (°C)

Fig.9 Dark current vs.

ambient temperature

CE=30V

V
V

CE=20V

VCE=10V

Appendix

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.

Notes

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.

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.

Appendix1-Rev1.1