Orange
CircularType
Shape EmittingSurface
Dimension(mm)
Green
φ3.1
610nm
Red
GaP
650nm563nm
Yellow
GaAsP on GaP
585nm
SLR-342MC SLR-342MG SLR-342YC SLR-342YY SLR-342DC SLR-342DU SLR-342VC SLR-342VR
StandardTypeφ3.1CircularTypeLEDLamps
SLR-342Series
(TYP.)
■Directivity
■ExternalDimensions（Unit：mm）
■AbsoluteMaximumRatings（Ta=25℃）
0 50 10050100
0°
30°
60°
90°
30°
60°
90°
■ElectricalOpticalCharacteristics（Ta=25℃）
＊
I
FP
measured under duty ≦1/ 5,pulse width≦1ms.
Note)SLR-342seriesareavailablewithformingtapingstyle.Forthebulkandstraighttapingstyle,wewouldrecommend
ourSLR-343(LEDswithPressureReleaseStructure)
Tolerance:±0.2
Relative Luminous Intensity (%)
φ
φ
5.2±0.3
1.0Max.
3.8±0.3
3.5
φ3.1
24.0Min.
2.5±1.0
（2.5）
CATHODE
□0.4
（4.1）（1.1）
4−0.5
diffused
clear
■
RecommemdedPadLayout
1.0 2.0
5.0（FormedLeadType）
±0.1
■PackagingSpacifications（Unit：mm）
Tape：2000pcs/Box
158
48
340
FormingH1Dimensions (mm)
TB7
8.9
TC7
9.9
TE7
11.9
TF7
12.9
TG7
13.9
TH7
14.9
TJ7
15.9
6.35±0.4
0±1.0
11.0Max.
（0〜3.0）
0±2.0
12.7±1.0
φ4.0±0.2
φ3.1
5.2±0.3
H1
0.7±0.2
18.0
9.0±0.5
16.0±0.5
12.7±0.3
3.85±0.8 5.0±0.8
（2.5）
CONVENTIONALLEDLAMPS
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
Green
Yellow
60 20
60 3 -30 to +100-25 to +85
75 25
Red
Orange
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
10 10 3
563
585
610
650
9.0
9.0
25
3.6 10
25
9.0 25
5.6 16
5.6 16
5.6 16
40 10 10
2.1
2.0
IF
(mA)
Typ.
(V)
Typ.
(mcd)
Typ.
(nm)
λp
Typ.
(nm)
Min.
(mcd)
IF
(mA)
IF
(mA)
Max.
(µA)
VR
(V)
∆λ
ColoredClear
ColoredDiffused
ColoredClear
ColoredDiffused
ColoredClear
ColoredDiffused
ColoredClear
ColoredDiffused
（Unit：mm）
Peak
forward
current
IFP
（mA）
PartNo.
Power
dissipation
PD
（mW）
Forward
current
IF
（mA）
Reverse
voltage
VR
（V）
Operating
temperature
Topr
（°C）
Stotage
temperature
Tstg
（°C）
Emitting
color
PartNo.
Forward
voltage
VF
Lightwavelength
Reverse
current
IR
Brightness
IV
ResinColor
Peak
Half-wave
Packaging
FormedLeadType
CONVENTIONALLEDLAMPS
■ElectricalCharacteristicCurves
20
10
5.0
2.0
1.0
0.5
0.2
0.1
1.51.0 2.0 2.5 3.0
50
FORWARDVOLTAGE:VF

(V)
FORWARDCURRENT:IF

(mA)
Ta=25℃
ForwardCurrent-ForwardVoltage
Derating
20
10
0
20 30 40 50 60 70 80 90
30
AMBIENTTEMPERATURE:Ta

(℃)
MAXIMUMFORWARDCURRENT:IF
Max.(mA)
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
SLR-342MC
SLR-342MG
SLR-342YC
SLR-342YY
SLR-342DC
SLR-342DU
SLR-342VC
SLR-342VR
RelativeLuminousIntensity-CaseTemperature
1.4
1.2
1.0
0.8
0.6
0.4
−20 0 20 40 60 80
RELATIVELUMINOUSINTENSITY
CASETEMPERATURE(℃)
RelativeLuminousIntensity-ForwardCurrent
Ta＝25℃
10
1
0.1 1 10 100
0.1
FORWARDCURRENT:IF

(mA)
RELATIVELUMINOUSINTENSITY
RatioofMaximumTolerablePeakCurrent-PulseDuration
1
10
3
2.4
101 100 1000 10000
PULSEDURATION:Tw

(usec)
IFPMax／IFMax
50kHz
20kHz
10kHz
2kHz
5kHz
1kHz
500Hz
200Hz
100Hz
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.
25
LED lamps Table of luminosity rankings
Table of luminosity rankings
26
LED lamps Table of intensity rankings
Luminous intensity rankings
(Units : mcd) (Units : mcd)
For more information about rankings, contact your ROHM representative.
Appendix
Appendix1-Rev1.0
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 use silicon as a basic material.
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.
IF peak Max.
IF Max.
21
LED lamps LED lamps
Determine the pulse drive conditions as follows.
1. Decide what repetition frequency (f) and duty factor
(DF) will be used.
2. Determine the maximum tolerable peak current ratio
from Figure 2.
3. Determine the maximum forward current from
Figure 3.
For example, when Ta = 40C or above, the maximum
forward current (IF Max.) decreases.
4. Calculate the maximum tolerable peak current (IF
peak Max.).
Example
If f = 1 kHz, DF = 10%, and T a = 40C, the maximum toler-
able peak current ratio from Figure 2 is 3.0 for red, orange
and yellow, and 2.4 for green.
The maximum forward current IF Max. at Ta = 40C is 20
mA for red, orange and yellow, and 25 mA for green.
Therefore, the maximum tolerable peak current under
these conditions is as follows :
Red, orange and yellow 20 mA 3.0 = 60 mA. .
Green 25 mA 2.4 = 60 mA. . . . . . . . . . . . . . . . . .
For the repetition frequency, we recommend 1 kHz or
above.
(7) Decrease of rated current
The maximum rated forward current of LED lamps will
vary depending on the ambient operating temperature.
(Refer to Figure 3)
(8) V ariation of luminous intensity depending on ambi-
ent temperature
ROHM LED lights have a temperature coefficient of
approximately –1% for red and orange, and 0.5% for
yellow and green. (Refer to the luminous intensity vs.
case temperature characteristics for each LED type.)
Storage precautions
Storage in a dry box is best. However, if this is not pos-
sible we recommend the following conditions :
Temperature : 5 to 30C
Humidity : 60%RH max.
Recommended PCB
We recommend the following hole diameters. Note, how-
ever, that these may vary depending on the board materi-
al, degree of integration, and wiring.
LED lamp product names
The product names of ROHM LED lamps and chip LEDs
are coded as follows :