Data Sheet
2.5 or 5.0
2.01.0 ±0.1
（2.5）
24.0Min.
Cathode
5.4
φ3.8
φ3.1
□0.4
（unit : mm）
Tolerance : ±0.2
（unit : mm）
RELATIVE INTENSITY(%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
05010050100
0°
30°
60°
90°
30°
60°
90°
ANGULAR DISPLACEMENT(deg)
RELATIVE INTENSITY(%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
05010050100
0°
30°
60°
90°
30°
60°
90°
ANGULAR DISPLACEMENT(deg)
SLR-343 Series SLR343BC7T / SLR343WBC7T
Directivity (deg)
RELATIVE INTENSITY (%)
Directivity (deg)
RELATIVE INTENSITY (%)
RELATIVE INTENSITY(%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
0 50 10050100
0°
30°
60°
90°
30°
60°
90°
ANGULAR DISPLACEMENT(deg)
SLR343BCT / ECT / BC4T / EC4T
Directivity (deg)
RELATIVE INTENSITY (%)
Viewing angle 2θ 1/2 / 40: Standard
Part No. Chip
Structure
Emitting
Color
Absolute Maximum Ratings (Ta＝25℃) Electrical and Optical Characteristics (Ta＝25℃)
Power
Dissipation
P
D
(mW)
Forward
Current
I
F
(mA)
Peak Forward
Current
I
FP
(mA)
Reverse
Voltage
V
R
(V)
Operating
Temperature
Topr(℃)
Storage
Temperature
Tstg(℃)
Forw ard V oltage V
F
Reverse Current I
R
Dominant Wavelength Luminous Intensity I
V
Typ.
(V)
I
F
(mA)
Max.
(μA) VR(V) λD
Typ.(nm)
I
F
(mA)
Min.
(mcd) Typ.
(mcd)
I
F
(mA)
■SLR-343VR
GaAsP
on GaP
Red
60 20
60＊13 -25 to +85 -30 to +100
2.0
10 10 3
630
10
5.6 16
10
■SLR-343VC 9.0 25
■SLR-343DU
Orange
605 5.6 16
■SLR-343DC 9.0 25
■SLR-343YY Yellow
2.1
587 3.6 10
■SLR-343YC 5.6 16
■SLR-343MG
GaP Green 75 25
572
■SLR-343MC 9.0 25
■SLR-343PG 560 2.2 6.3
■SLR-343PC
■SLR343ECT
InGaN
Bluish
Green 120 30
100＊25 -20 to +80 -30 to +100
3.3
20 100 5
527
20
900 2200
20
■SLR343EC4T 3.2 525 420 1500
■SLR343BCT
Blue
120 30 3.3
470
200 600
■SLR343BC7T 105 25
3.2
220 470
■SLR343BC4T 120 30 200
■
SLR343WBC7T White 105 25 (x, y)
(0.31, 0.31) 330 680
Diffused
Clear
SLR
343
BCT / ECT
SLR
343
BC
4
T / EC
4
T
SLR
343
BC
7
T
SLR
343
WBC
7
T
＊1:Duty1/5, 200Hz, ＊2:Duty1/10, 1kHz
Specifications
Dimensions Recommended Solder Pattern Viewing Angle
Features
・Viewing angle 2θ 1/2 : 40°
・Competent to direct mount
Color
Type V D YM
P E B WB
SLR-343 Series
1/4
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2011.12 - Rev.C
FORWARD CURRENT：IF (mA)
FORWARD VOLTAGE：VF
(V)
1.0 1.5 2.0 3.02.5
Ta=25°C
50
20
10
5.0
2.0
1.0
0.5
0.2
0.1
RELATIVE LUMINOUS INTENSITY (a.u.)
ATMOSPHERE TEMPERATURE：Ta
(°C)
1.4
1.2
1.0
0.8
0.6
0.4
-40 -20 0 20 40 60 80 100
RELATIVE LUMINOUS INTENSITY (a.u.)
FOWARD CURRENT：IF
(mA)
0
1.2
1.0
0.8
0.6
0.4
0.2
0 5 10 15 20 25
Ta=25°C
MAXIMUM FORWARD CURRENT：IF(mA)
AMBIENT TEMPERATURE：Ta
(°C)
0
10
20
30
-40 -20 0 20 40 60 80 100
■
■
■
■
■
SLR-
343
VR
■
SLR-
343
VC
■
SLR-
343
DU
■
SLR-
343
DC
■
SLR-
343
YY
■
SLR-
343
YC
■
SLR-
343
MG
■
SLR-
343
MC
■
SLR-
343
PG
■
SLR-
343
PC
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
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)25:$5'92/7$*(：9)

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 
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7D &
RELATIVE LUMINOUS INTENSITY (a.u.)
ATMOSPHERE TEMPERATURE：Ta
(°C)
1.4
1.2
1.0
0.8
0.6
0.4
-40 -20 0 20 40 60 80 100
1.6 IF=20mA
RELATIVE LUMINOUS INTENSITY(a.u.)
FOWARD CURRENT：IF
(mA)
0
0.5
1.0
1.5 Ta=25°C
010 3020
MAXIMUM FORWARD CURRENT：IF(mA)
AMBIENT TEMPERATURE：Ta
(°C)
0
10
20
40
30
-40 -20 0 20 40 60 80 100
■
■
SLR-
343
VR
■
SLR-
343
VC
■
SLR-
343
DU
■
SLR-
343
DC
■
SLR-
343
YY
■
SLR-
343
YC
■
SLR-
343
MG
■
SLR-
343
MC
■
SLR-
343
PG
■
SLR-
343
PC
■
■
SLR
343
ECT
■
SLR
343
BCT
■
SLR
343
EC
4
T
■
SLR
343
BC
4
T
■
SLR
343
BC
7
T
■
■
SLR
343
WBC
7
T
■
■
SLR
343
ECT
■
SLR
343
EC
4
T
■
SLR
343
BCT
■
SLR
343
BC
4
T
■
SLR
343
BC
7
T
■
■
SLR
343
WBC
7
T
■
■
SLR
343
ECT
■
SLR
343
EC
4
T
■
SLR
343
BCT
■
SLR
343
BC
4
T
■
SLR
343
BC
7
T
■
■
SLR
343
WBC
7
T
■
■
SLR
343
ECT
■
SLR
343
EC
4
T
■
SLR
343
BCT
■
SLR
343
BC
4
T
■
SLR
343
BC
7
T
■
■
SLR
343
WBC
7
T
■
■
■
SLR-
343
VR
■
SLR-
343
VC
■
SLR-
343
DU
■
SLR-
343
DC
■
SLR-
343
YY
■
SLR-
343
YC
■
SLR-
343
MG
■
SLR-
343
MC
■
SLR-
343
PG
■
SLR-
343
PC
■
■
■
SLR-
343
VR
■
SLR-
343
VC
■
SLR-
343
DU
■
SLR-
343
DC
■
SLR-
343
YY
■
SLR-
343
YC
■
SLR-
343
MG
■
SLR-
343
MC
■
SLR-
343
PG
■
SLR-
343
PC
Forward Current-Forward Voltage
Electrical Characteristics Curves
Luminous Intensity-Atmosphere Temperature
Derating
SLR-343 Series
Luminous Intensity-Forward Current
2/4
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2011.12 - Rev.C
SLR-343 Series
Rank Reference of Brightness
Viewing
angle
(2ɵ1/2)
Brightness Rank EFGHJKLMNPQRSTUV
Brightness
(mcd)
Resin Color
0.40 to
0.63 0.63 to
1.0
1.0 to
1.6 1.6 to
2.5 2.5 to
4.0 4.0 to
6.3 6.3 to
10 10 to
16 16 to
25 25 to
40 40 to
63 63 to
100
100 to
160 160 to
250 250 to
400 400 to
630
φ3
Circular type 40˚
Transparent Colored
SLR-343VC
Diffused Colored SLR-343VR
Viewing
angle
(2ɵ1/2)
Brightness Rank EFGHJKLMNPQRSTUV
Brightness
(mcd)
Resin Color
0.40 to
0.63 0.63 to
1.0
1.0 to
1.6 1.6 to
2.5 2.5 to
4.0 4.0 to
6.3 6.3 to
10 10 to
16 16 to
25 25 to
40 40 to
63 63 to
100
100 to
160 160 to
250 250 to
400 400 to
630
φ3
Circular type 40˚
Transparent Colored
SLR-343DC
Diffused Colored SLR-343DU
Viewing
angle
(2ɵ1/2)
Brightness Rank EFGHJKLMNPQRSTUV
Brightness
(mcd)
Resin Color
0.40 to
0.63 0.63 to
1.0
1.0 to
1.6 1.6 to
2.5 2.5 to
4.0 4.0 to
6.3 6.3 to
10 10 to
16 16 to
25 25 to
40 40 to
63 63 to
100
100 to
160 160 to
250 250 to
400 400 to
630
φ3
Circular type 40˚
Transparent Colored
SLR-343YC
Diffused Colored SLR-343YY
Red (V) （Ta=25˚C, IF＝10mA）
Orange (D)
Yellow (Y)
（Ta=25˚C, IF＝10mA）
（Ta=25˚C, IF＝10mA）
Green (M, P)
Bluish Green (E)
Blue (B)
White (WB)
Viewing
angle
(2ɵ1/2)
Brightness Rank EFGHJKLMNPQRSTUV
Brightness
(mcd)
Resin Color
0.40 to
0.63 0.63 to
1.0
1.0 to
1.6 1.6 to
2.5 2.5 to
4.0 4.0 to
6.3 6.3 to
10 10 to
16 16 to
25 25 to
40 40 to
63 63 to
100
100 to
160 160 to
250 250 to
400 400 to
630
φ3
Circular type 40˚
Transparent Colored
SLR-343MC
Diffused Colored SLR-343MG
Transparent
Colorless SLR-343PG
SLR-343PC
Viewing
angle
(2ɵ1/2)
Brightness Rank XH XJ XK XL XM XN XP XQ XR XS XT XU
Brightness
(mcd)
Resin Color
150 to
220 220 to
330 330 to
473 470 to
680 680 to
1000
1000 to
1500 1500 to
2200 2200 to
3300 3300 to
4700 4700 to
6800 6800 to
10000
10000 to
15000
φ3
Circular type 40˚ Transparent
Colorless
※SLR343EC4T
※SLR343ECT
（Ta=25˚C, IF＝20mA）
（Ta=25˚C, IF＝20mA）
（Ta=25˚C, IF＝20mA）
Viewing
angle
(2ɵ1/2)
Brightness Rank XH XJ XK XL XM XN XP XQ XR XS XT XU
Brightness
(mcd)
Resin Color
150 to
220 220 to
330 330 to
473 470 to
680 680 to
1000
1000 to
1500 1500 to
2200 2200 to
3300 3300 to
4700 4700 to
6800 6800 to
10000
10000 to
15000
φ3
Circular type 40˚ Transparent
Colorless
SLR343BC7T
※SLR343BC4T
※SLR343BCT
Viewing
angle
(2ɵ1/2)
Brightness Rank XJ XK XL XM XN XP XQ XR XS XT XU
Brightness
(mcd)
Resin Color
220 to
330 330 to
473 470 to
680 680 to
1000
1000 to
1500 1500 to
2200 2200 to
3300 3300 to
4700 4700 to
6800 6800 to
10000
10000 to
15000
φ3 Circular
type 40˚
Transparent Colorless
SLR343WBC7T
※Brightness on specifi cation sheet include tolerance of within ±10%.
（Ta=25˚C, IF＝10mA）
3/4
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2011.12 - Rev.C
SLR-343 Series
Part No. Construction
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4/4
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2011.12 - Rev.C
R1120
A
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
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Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specied in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
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