SIM-20ST
Sensors
Infrared light emitting diode, side-view type
SIM-012SB
The SIM-20ST is a GaAs infrared light emitting diode with a side-facing detector. High output with
φ1.85
lens.
1.5±0.1
Gate remainder 0.5Max.
Applications
Light source for sensors
Dimensions
(Unit : mm)
4.3±0.1
Notes:
1. Tolerances are
±0.2
unless
otherwise indicated.
2. Value in parenthese is size
at base of leads.
(2.54)
14Min.
Features
1) Compact package (4.4x4.3 mm) with lens.
2) High efficiency, high output P
O
= 7mW (I
F
= 50 mA).
3) Emission spectrum well suited to silicon detectors
(λ
P
= 950 nm).
4) Good current-optical output linearity.
5) Long life, high reliability.
3.9±0.1
2.0
3.2±0.1
4.4±0.1
1.5
2°±1°
4°±1°
0.4
0.5
0.45
Resin coating
0.5Max.
0.53
0.4
1 Cathode
2 Anode
Absolute maximum ratings
(Ta=25°C)
Parameter
Forward current
Reverse voltage
Power dissipation
Pulse forward current
Operating temperature
Storage temperature
Symbol
I
F
V
R
P
D
I
FP
∗
Topr
Tstg
Limits
50
5
80
0.5
−25
to +85
−30
to +100
Unit
mA
V
mW
A
°C
°C
∗
Pulse width = 0.1 ms, duty ratio 1%
Electrical and optical characteristics
(Ta=25°C)
Parameter
Emitting strength
Forward voltage
Reverse current
Peak light emitting wavelength
Spectral line half width
Half-viewing angle
Response time
Cut-off frequency
Symbol
I
E
V
F
I
R
Min.
−
−
−
−
−
−
−
−
Typ.
7.5
1.3
−
950
40
±15
1.0
1.0
Max.
−
1.6
10
−
−
−
−
−
Unit
mW/sr
V
µA
nm
nm
deg
µs
MHz
I
F
＝50mA
I
F
＝50mA
V
R
＝3V
I
F
＝50mA
I
F
＝50mA
I
F
＝50mA
I
F
＝50mA
I
F
＝50mA
Conditions
λ
P
∆λ
θ
1/2
tr・tf
fc
Rev.A
1/2
SIM-20ST
Sensors
Electrical and optical characteristic curves
FORWARD CURRENT : I
F
(
mA)
FORWARD CURRENT : I
F
(mA)
50
50
−25°C
40
EMITTING STRENGTH I : I
E
(mW / Sr)
10
0
°C
25
°C
50
°C
75
°C
8
40
30
20
10
0
−20
30
6
20
4
10
2
0
20
40
60
80
100
0
0
1
FORWARD VOLTAGE : V
F
(V)
2
0
0
10
20
30
40
50
AMBIENT TEMPERATURE : Ta (
°C)
FORWARD CURRENT : I
F
(mA)
Fig.1 Forward current falloff
Fig.2 Forward current vs. forward voltage
Fig.3 Emitting strength vs.
forward current
100
RELATIVE EMITTING I : I
E
(%)
200
RELATIVE OPTICAL OUTPUT : P
O
(%)
80
100
60
50
40
20
20
10
−25
0
25
50
75
100
0
900
920
940
960
980
1000
AMBIENT TEMPERATURE : Ta (°C
)
OPTICAL WAVELENGTH :
λ
(
nm)
Fig. 4 Relative emitting strength vs.
ambient temperature
Fig.5 Wavelength
20°
30°
40°
50°
80
60
60°
70°
80°
90°
100
40
20
80
60
40
20
0
0
10° 20° 30° 40° 50° 60° 70° 80° 90°
RELATIVE EMITTING STRENGTH (%)
ANGULAR DISPLACEMENT :
θ
(
deg)
Fig. 6 Directional pattern
RELATIVE EMITTING STRENGTH (%)
10°
0°
100
Rev.A
2/2
Appendix
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.
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
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