SIR-34ST3F
Sensors
Infrared light emitting diode, top view type
SIR-34ST3F
The SIR-34ST3F is a GaAs infrared light emitting diode housed in clear plastic. This device has a high luminous
efficiency and a 950nm spectrum suitable for silicon detectors. It is small and at the same time has a wide radiation angle,
marking it ideal for compact optical control equipment.
Applications
Optical control equipment
Light source for remote control devices
Dimensions
(Unit : mm)
φ3.8±0.3
φ3.5
φ3.1±0.2
5.2±0.3
Features
1) Compact (φ3.1mm).
2) High efficiency, high output P
O
=8.0mW
(I
F
=50mA).
3) Wide radiation angle
θ=27°.
4) Emission spectrum well suited to silicon detectors
(λ
P
=950nm).
5) Good current-optical output linearity.
6) Long life, high reliability.
2−
0.5
Min.24
2
1
(2.5)
2.5±1
Max.1
4−0.6
1.1
Notes:
1.
Unspecified tolerance
shall be
±0.2.
2. Dimension in parenthesis are
show for reference.
1 Anode
2 Cathode
Absolute maximum ratings
(Ta = 25°C)
Parameter
Forward current
Reverse voltage
Power dissipation
Pulse forward current
Operating temperature
Storage temperature
∗
Pulse width=0.1msec, duty ratio 1%
Symbol
I
F
V
R
P
D
I
FP
∗
Topr
Tstg
Limits
100
5
160
0.5
−25
to
+85
−40
to
+85
Unit
mA
V
mW
A
°C
°C
Rev.B
1/3
SIR-34ST3F
Sensors
Electrical and optical characteristics
(Ta = 25°C)
Parameter
Optical output
Emitting strength
Forward voltage
Reverse current
Peak light emitting wavelength
Spectral line half width
Half-viewing angle
Pesponse time
Cut-off frequency
Symbol
P
O
I
E
V
F
I
R
Min.
−
3.5
−
−
−
−
−
−
−
Typ.
8.0
−
1.3
−
950
40
±27
1.0
1.0
Max.
−
17.6
1.6
10
−
−
−
−
−
Unit
mW
mW/sr
V
µA
nm
nm
deg
µs
MHz
I
F
=50mA
I
F
=50mA
I
F
=100mA
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
f
C
Electrical and optical characteristic curves
100
FORWARD CURRENT : I
F
(mA)
50
100
FORWARD CURRENT : I
F
(mA)
−25°C
0°C
25°C
50°C
75°C
80
RELATIVE OPTICAL OUTPUT : P
O
(%)
80
40
60
60
30
40
20
40
20
10
0
0
20
0
0
20
40
60
80
100
1
FORWARD VOLTAGE : V
F
(V)
2
0
900
920
940
960
980
1000
AMBIENT TEMPERATURE : Ta (°C)
OPTICAL WAVELENGTH :
λ
(nm)
Fig.1 Forward current falloff
Fig.2 Forward current vs. forward voltage
Fig.3 Wavelength
RELATIVE EMITTING STRENGTH : I
E
(%)
50
EMITTING STRENGTH : I
E
(mW/sr)
200
40
100
30
50
20
10
20
0
0
20
40
60
80
100
10
−20
0
20
40
60
80
FORWARD CURRENT : I
F
(mA)
AMBIENT TEMPERATURE : Ta (°C)
Fig.4 Emitting strength vs.
forward current
Fig.5 Relative emitting strength
vs.ambient temperature
Rev.B
2/3
Appendix
Notes
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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
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whatsoever nature in the event of any such infringement, or arising from or connected with or related
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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 which 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.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
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order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
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More detail product informations and catalogs are available, please contact your nearest sales office.
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