Data Sheet
SML-31series
1608 0603）
（
1.6×0.8mm
（t=0.8mm）
Features
・
1608standardsize(1.6×0.8mm,t=0.8mm)
・
Abundantcolorvariationswithdiverseluminousintensitytypes
Color
T
ype
V
M
U
P
D
E
Y
B
W
WB
Product Specifications
PartNo.
■
SML-310VT
■
SML-311UT
■
SML-311DT
■
SML-310DT
■
SML-311WT
■
SML-311YT
■
SML-310YT
■
SML-310MT
■
SML-310PT
■
SML312ECT
■
SML312EC4T
■
SML312BCT
■
SML312BC4T
■
SML312WBCW(A)
LED
chip
GaAsPonGaP
AlGaInP
onGaAs
GaAsPonGaP
AIGaInP
onGaAs
GaAsPonGaP
GaP
Absolutemaximumratings(Ta＝25℃)
Electricalandopticalcharacteristics(Ta＝25℃)
Emitting Power
ForwardvoltageV
F
ReversecurrentI
R
DominontwavelengthλD LuminousintensityI
V
Forward Peakforward Reverse Operating
Storage
color dissipation current
current
voltage temperature temperature Typ.
Min. Typ. Max.
Max.
Min. Typ.
P
D
(mW) I
F
(mA) I
FP
(mA) V
R
(V)
Topr(℃)
Tstg(℃)
(V) I
F
(mA) (μA) V
R
(V) (nm) (nm) (nm) I
F
(mA) (mcd) (mcd) I
F
(mA)
Red
55
44
Orange
55
44
20
Yellowish
Green
Green
Bluish
Green
55
60
※1
4
-40to+85
2
1.8
2
1.8
2.1
2.2
3.3
84
Blue
White
108
30
100
※2
100
※2
3.2
5
-40to+100
3.3
3.2
-40to+100
3.0
5
5
20
20
2
20
2
4
625
615
602
587
584
100
567
557
520
630
620
605
590
587
570
560
527
525
470
635
625
608
593
590
573
563
535
20
20
2
20
2
1.4
0.9
1.6
2.2
0.9
2.2
3.6
1.4
90
36
22
5
45
4
2.5
3.15
6.3
2.5
6.3
16
4
200
90
63
46
71
5
20
20
2
20
2
Yellow
-30to+85
InGaN
464
476
(x,y)(0.30,0.29)
※1:Duty1/5,200Hz/※2:Duty1/10,1kHz
Dimensions
Recommended Solder Pattern Viewing Angle
SML-310 / SML-311 series
SCANNING ANGLE (deg)
SCANNINGANGLE(deg)
X
Y
SCANNING ANGLE (deg)
SCANNINGANGLE(deg)
X’
Y’
30°
40°
50°
60°
20°
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
30°
40°
50°
20°
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
1.6
1.2
70°
80°
90°
100
60°
70°
80°
90°
100
50
0
50
0.8
0.8
RELATIVE INTENSITY (%)
RELATIVEINTENSITY(%)
50
0
50
90°
100
RELATIVE INTENSITY (%)
RELATIVEINTENSITY(%)
90°
100
0.8
SCANNING ANGLE (deg)
SCANNINGANGLE(deg)
X
Y
SML312 series
X’
Y’
SCANNING ANGLE (deg)
SCANNINGANGLE(deg)
30°
40°
50°
60°
20°
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
50
0
50
90°
100
30°
40°
50°
20°
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
0.8
SML312BCT/ECT
SML312BC4T/EC4T
80°
90°
100
70°
0.85
60°
70°
80°
90°
100
50
0
50
0.25
0.8
Cathode mark
RELATIVE INTENSITY (%)
RELATIVEINTENSITY(%)
90°
100
RELATIVE INTENSITY (%)
RELATIVEINTENSITY(%)
X-Y
SCANNING ANGLE (deg)
SCANNINGANGLE(deg)
30°
20°
10°
0°
10°
20°
30°
40°
50°
SML312WBCW(A)
X’ - Y’
SCANNING ANGLE (deg)
SCANNINGANGLE(deg)
30°
40°
50°
20°
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
50
0
50
90°
100
Terminal
1.0
60°
70°
80°
40°
50°
60°
70°
80°
50
0
50
90°
100
60°
70°
80°
90°
100
Tolerance:±0.1
（unit:mm）
（unit:mm）
90°
100
RELATIVE INTENSITY (%)
RELATIVEINTENSITY(%)
RELATIVE INTENSITY (%)
RELATIVEINTENSITY(%)
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
1/3
2011.05 - Rev.B
SML-31 series
Electrical Characteristics Curves
Forward Current-Forward Voltage
■
100
■
■
FORWARD CURRENT：I
F
(mA)
10
10
FORWARD CURRENT：I
F
(mA)
FORWARD CURRENT：I
F
(mA)
■
SML-310VT
■
SML-310DT
■
SML-310MT
■
SML-310PT
■
SML-310YT
100
Ta=25°C
■
■
SML-311UT
■
SML-311DT
■
SML-311WT
■
SML-311YT
100
Ta=25°C
■
■
■
SML312BC4T
■
SML312EC4T
■
SML312BCT
■
SML312ECT
□
SML312WBCW(A)
10
1.0
1
1.0
1.5
2.0
2.5
3.0
0.1
1.0
1.5
2.0
2.5
1
2.5
3.0
3.5
4.0
FORWARD VOLTAGE：V
F
(V)
FORWARD VOLTAGE：V
F
(V)
FORWARD VOLTAGE：V
F
(V)
Luminous Intensity-Atmosphere Temperature
RELATIVE LUMINOUS INTENSITY (a.u.)
RELATIVE LUMINOUS INTENSITY (a.u.)
RELATIVE LUMINOUS INTENSITY (a.u.)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
-40
I
F
=20mA
■
■
■
■
SML-310VT
■
SML-310DT
■
SML-310YT
■
SML-310MT
■
SML-310PT
1.6
1.4
1.2
1.0
0.8
0.6
0.4
-40
I
F
=20mA
■
■
SML-311UT
■
SML-311DT
■
SML-311WT
■
SML-311YT
1.6
1.4
1.2
1.0
0.8
0.6
0.4
-40
I
F
=20mA
■
■
SML312BC4T
■
SML312EC4T
■
SML312BCT
■
SML312ECT
□
SML312WBCW(A)
ATMOSPHERE TEMPERATURE：Ta (°C)
-20
0
20
40
60
80
100
ATMOSPHERE TEMPERATURE：Ta (°C)
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
ATMOSPHERE TEMPERATURE：Ta (°C)
Luminous Intensity-Forward Current
RELATIVE LUMINOUS INTENSITY (a.u.)
RELATIVE LUMINOUS INTENSITY (a.u.)
RELATIVE LUMINOUS INTENSITY (a.u.)
3.0
2.5
2.0
1.5
1.0
0.5
0
0
10
20
30
40
50
60
f=1kHz
■
■
SML-310VT
■
SML-310DT
■
SML-310YT
■
SML-310MT
■
SML-310PT
100
Ta=25°C
■
■
SML-311UT
■
SML-311DT
■
SML-311WT
■
SML-311YT
5
Ta=25°C
■
4
■
SML312BC4T
■
SML312EC4T
■
SML312BCT
■
SML312ECT
□
SML312WBCW(A)
10
3
2
1.0
1
FORWARD CURRENT：I
F
(mA)
0.1
0.1
FORWARD CURRENT：I
F
(mA)
1
10
100
0
0
5
10
15
20
25
30
FORWARD CURRENT：I
F
(mA)
Deratings
■
MAXIMUM FORWARD CURRENT : IF (mA)
30
MAXIMUM FORWARD CURRENT：IF (mA)
MAXIMUM FORWARD CURRENT : IF (mA)
■
SML-310VT
■
SML-310DT
■
SML-310YT
■
SML-310MT
■
SML-310PT
■
30
■
SML-311UT
■
SML-311DT
■
SML-311WT
■
SML-311YT
■
40
30
■
SML312BC4T
■
SML312EC4T
■
SML312BCT
■
SML312ECT
□
SML312WBCW(A)
20
20
20
10
10
10
0
-40
AMBIENT TEMPERATURE：Ta (°C)
-20
0
20
40
60
80
100
0
-40
AMBIENT TEMPERATURE：Ta (°C)
-20
0
20
40
60
80
100
0
-40
-20
0
20
40
60
80
100
AMBIENT TEMPERATURE：Ta (°C)
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
2/3
2011.05 - Rev.B
SML-31 series
Rank Reference of Brightness
Red (V, U)
Package
size(mm)
Mini-mold
ChipLEDs
Luminous
Intensity
(mcd)
Height(mm)
G
H
J
K
L
M
N
16to25
P
25to40
Q
R
S
T
U
V
（Ta=25˚C,I
F
＝20mA）
W
X
1.0to1.6 1.6to2.5 2.5to4.0 4.0to6.3 6.3to10 10to16
SML-311UT
※/※1
SML-310VT
※
40to63 63to100 100to160 160to250 250to400 400to630 630to1000 1000to1600
1608
0.8
Orange (D)
Package
size(mm)
Mini-mold
ChipLEDs
Luminous
Intensity
(mcd)
Height(mm)
G
H
J
SML-311DT
K
L
M
N
P
Q
R
S
T
U
V
（Ta=25˚C,I
F
＝2mA）
W
X
1.0to1.6 1.6to2.5 2.5to4.0 4.0to6.3 6.3to10 10to16 16to25 25to40 40to63 63to100 100to160 160to250 250to400 400to630 630to1000 1000to1600
1608
0.8
Yellow (Y, W)
Package
size(mm)
Mini-mold
ChipLEDs
Luminous
Intensity
(mcd)
Height(mm)
G
H
J
K
L
M
N
P
Q
R
S
T
U
V
（Ta=25˚C,I
F
＝20mA）
W
X
1.0to1.6 1.6to2.5 2.5to4.0 4.0to6.3 6.3to10 10to16 16to25 25to40 40to63 63to100 100to160 160to250 250to400 400to630 630to1000 1000to1600
SML-311YT
※/※1
SML-311WT
※/※1
1608
0.8
SML-310YT
※
Green (M, P, E)
Luminous
F
G
H
J
K
L
Intensity
Package
size(mm)
Height(mm) (mcd)
0.63to1.0 1.0to1.6 1.6to2.5 2.5to4.0 4.0to6.3 6.3to10
M
10to16
N
16to25
P
25to40
Q
40to63
R
S
T
U
V
（Ta=25˚C,I
F
＝20mA）
W
X
63to100 100to160 160to250 250to400 400to630 630to1000 1000to1800
SML312EC4T
※
Mini-mold
ChipLEDs
1608
0.8
SML-310PT
※
SML-310MT
※
SML312ECT
※
Blue (B)
Luminous
G
H
J
K
L
M
Intensity
Package
size(mm)
Height(mm) (mcd)
0.9to1.4 1.4to2.2 2.2to3.6 3.6to5.6 5.6to9.0 9to14
N
P
Q
R
S
T
U
（Ta=25˚C,I
F
＝20mA）
V
W
14to22 22to36 36to56 56to90 90to140 140to220 220to360 360to560 560to900
SML312BC4T
SML312BCT
Mini-mold
ChipLEDs
1608
0.8
White (WB)
Luminous
P
Intensity
Package
size(mm)
Height(mm) (mcd)
25to36
Q
36to56
R
S
T
U
V
W
X1
X2
Y1
（Ta=25˚C,I
F
＝5mA）
Y2
Z1
56to90 90to140 140to220 220to360 360to560 560to900 900to1100 1100to1400 1400to1800 1800to2200 2200to2800
Mini-mold
ChipLEDs
1608
0.8
SML312WBCW(A)
※Brightnessonspecificationsheetincludetoleranceofwithin±10%.※1
I
F
=2mA
：
Part No. Construction
∗
“−”
will be taken out for
emitting color W/B/E series.
Special Code will be applied for
Emitting color W/B/E series.
Chromaticity rank (for white LED)
S M L
Series name
3 1 0
Package type
Chip Type
D
Emitting Color
T
Resin Color
T 8 6
Taping Specifications
K
Rank sign (Brightness Rank)
∗
0
1
2
Standard Type
Low Current Type
High Brightness Type
V
U
D
W
Y
M
E
P
Red:630nm
Red:620nm
Orange:605nm
Yellow:590nm
Yellow:587(590)nm
Yellowish-Green:572nm
Green:560nm
Bluish-Green:527nm
Blue:470(466)nm
T
W
Transparent Colorless
MilkyWhite
T86
Cathode at sprocket hole side
T87
Reverse of T86
1
For white LED, cathode at sprocket hole side
B
WB
White
∗
Concerning the Brightness rank
• Please refer to the rank chart above for luminous intensity classification.
• Part name is individual for each rank.
• When shipped as sample, the part name will be a representative part name.
General products are free of ranks. Please contact sales if rank appointment is needed.
Packing Specification
ROHMLEDproductsarebeingshippedwithdesiccant(silicagel)concludedinmoisture-proofbags.
Pastingthemoisturesensitivelabelontheoutersurfaceofthemoisture-proofbagsorenclosingthehumidityindicationcardinsidethebagisavailableuponrequest.
Pleasecontactthenearestsalesofficeordistributerifnecessary.
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
3/3
2011.05 - Rev.B
Notice
Notes
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More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
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