Data Sheet
0.8
0.80.850.8
0.25
0.8
1.2
1.6
0.8
1.0 Terminal
Cathode mark
Tolerance : ±0.1
(unit : mm) (unit : mm)
RELATIVE INTENSITY (%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
0 50 10050100
0°
30°
60°
90°
30°
60°
90°
YX
SCANNING ANGLE (deg)
RELATIVE INTENSITY (%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
0 50 10050100
0°
30°
60°
90°
30°
60°
90°
Y’X’
SCANNING ANGLE (deg)
Y’X’
RELATIVE INTENSITY (%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
0 50 10050100
0°
30°
60°
90°
30°
60°
90°
SCANNING ANGLE (deg)
RELATIVE INTENSITY (%)
10°
10° 20°
20°
40°
50°
70°
80°
40°
50°
70°
80°
0 50 10050100
0°
30°
60°
90°
30°
60°
90°
SCANNING ANGLE (deg)
YX
SML-310 / SML-311 series
SML312 series
※1:Duty1/5, 200Hz / ※2:Duty1/10, 1kHz
Part No. LED
chip
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(℃)
Forward voltage V
F
Reverse current I
R
Dominont wavelength λD
Luminous intensity I
V
Typ.
(V)
I
F
(mA)
Max.
(μA) VR(V) Min.
(nm) Typ.
(nm) Max.
(nm)
I
F
(mA)
Min.
(mcd) Typ.
(mcd)
I
F
(mA)
■SML-310VT
GaAsP on GaP
Red 55
20
60※14
-30 to +85
-40 to +85
2 20
100
4
625 630 635 20 1.4 4 20
■SML-311UT AlGaInP
on GaAs 44 1.8 2 615 620 625 20.9 2.5 2
■SML-311DT
Orange
602 605 608 1.6 3.15
■SML-310DT
GaAsP on GaP
55 2 20 20 2.2 6.3 20
■SML-311WT AIGaInP
on GaAs Yellow 44 1.8 2 587 590 593 2 0.9 2.5 2
■SML-311YT 584 587 590
■SML-310YT
GaAsP on GaP
55
2.1
20 20
2.2 6.3
20
■SML-310MT GaP
Yellowish
Green
2.2 567 570 573 3.6 16
■SML-310PT Green 557 560 563 1.4 4
■SML312ECT
InGaN
Bluish
Green 84 100※25 -40 to +100
3.3
5
520 527 535 90 200
■SML312EC4T 3.2 525 36 90
■SML312BCT Blue 3.3 464 470 476 22 63
■SML312BC4T 3.2 46
SCANNING ANGLE (deg)
RELATIVE INTENSITY (%)
SCANNING ANGLE (deg)
RELATIVE INTENSITY (%)
SCANNING ANGLE (deg)
RELATIVE INTENSITY (%)
SCANNING ANGLE (deg)
RELATIVE INTENSITY (%)
Product Specifications
Dimensions Recommended Solder Pattern Viewing Angle
SML312BCT/ECT
SML312BC4T/EC4T
Color
Type V U D Y
WM P E B
SML-31 series
Features
・1608 standard size(1.6×0.8mm, t=0.8mm)
・Abundant color variations with diverse luminous intensity types
1608(0603)
1.6×0.8mm(t=0.8mm)
1/3
© 2012 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2012.11 - Rev.C
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 ■■
SML-
311
UT
■
SML-
311
DT
■
SML-
311
WT
■
SML-
311
YT
RELATIVE LUMINOUS INTENSITY (a.u.)
FORWARD CURRENT：IF (mA)
Ta=25°C
0.1 1 10 100
100
10
1.0
0.1
MAXIMUM FORWARD CURRENT : IF (mA)
AMBIENT TEMPERATURE：Ta
(°C)
0
10
20
30
-40 -20 0 20 40 60 80 100
MAXIMUM FORWARD CURRENT : IF (mA)
AMBIENT TEMPERATURE : Ta
(°C)
0
10
30
20
-40 -20 0 20 40 60 80 100
100
10
1
FORWARD CURRENT：IF (mA)
FORWARD VOLTAGE：VF
(V)
2.0 2.5
1.0 1.5 3.0
■
■
■
■
SML-
310
VT
■
SML-
310
DT
■
SML-
310
MT
■
SML-
310
PT
■
SML-
310
YT
MAXIMUM FORWARD CURRENT : IF (mA)
AMBIENT TEMPERATURE：Ta
(°C)
0
10
20
30
-40 -20 0 20 40 60 80 100
■■
SML-
310
VT
■
SML-
310
DT
■
SML-
310
YT
■
SML-
310
MT
■
SML-
310
PT
RELATIVE LUMINOUS INTENSITY (a.u.)
FORWARD CURRENT：IF (mA)
0 10 20 30 40 50 60
0
0.5
1.0
1.5
2.0
2.5
3.0 f=1kHz ■■
SML-
310
VT
■
SML-
310
DT
■
SML-
310
YT
■
SML-
310
MT
■
SML-
310
PT
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 ■
■
■
■
SML-
310
VT
■
SML-
310
DT
■
SML-
310
YT
■
SML-
310
MT
■
SML-
310
PT
FORWARD CURRENT：IF
(mA)
FORWARD VOLTAGE：VF
(V)
100
10
1.0
1.0 1.5 2.0 2.5
0.1
Ta=25°C ■■
SML-
311
UT
■
SML-
311
DT
■
SML-
311
WT
■
SML-
311
YT
100
10
1
FORWARD CURRENT : IF (mA)
FORWARD VOLTAGE : VF
(V)
2.5 3.0 3.5 4.0
Ta=25°C ■
■
■
SML
312
BC
4
T
■
SML
312
EC
4
T
■
SML
312
BCT
■
SML
312
ECT
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 ■■
SML
312
BC
4
T
■
SML
312
EC
4
T
■
SML
312
BCT
■
SML
312
ECT
RELATIVE LUMINOUS INTENSITY (a.u.)
FORWARD CURRENT : IF (mA)
0
3
2
1
4
5
05 10 15 20 25 30
Ta=25°C ■■
SML
312
BC
4
T
■
SML
312
EC
4
T
■
SML
312
BCT
■
SML
312
ECT
■■
SML-
311
UT
■
SML-
311
DT
■
SML-
311
WT
■
SML-
311
YT
■■
SML-
311
UT
■
SML-
311
DT
■
SML-
311
WT
■
SML-
311
YT
■■
SML
312
BC
4
T
■
SML
312
EC
4
T
■
SML
312
BCT
■
SML
312
ECT
Forward Current-Forward Voltage
Electrical Characteristics Curves
Luminous Intensity-Atmosphere Temperature
Luminous Intensity-Forward Current
Deratings
SML-31 series
2/3
© 2012 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2012.11 - Rev.C
SML-31 series
Rank Reference of Brightness
Red (V, U) (Ta=25˚C, IF＝20mA)
Package
size(mm)
Luminous
Intensity
(mcd)
Height(mm)
G H J K L M N P Q R S T U V W X
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
630 to 1000 1000 to 1600
Mini-mold
Chip LEDs 1608 0.8 SML-311UT※/※1
SML-310VT※
Orange (D) (Ta=25˚C, IF＝2mA)
Package
size(mm)
Luminous
Intensity
(mcd)
Height(mm)
G H J K L M N P Q R S T U V W X
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
630 to 1000 1000 to 1600
Mini-mold
Chip LEDs 1608 0.8 SML-311DT
Yellow (Y, W) (Ta=25˚C, IF＝20mA)
Package
size(mm)
Luminous
Intensity
(mcd)
Height(mm)
G H J K L M N P Q R S T U V W X
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
630 to 1000 1000 to 1600
Mini-mold
Chip LEDs 1608 0.8 SML-311YT※/※1
SML-311WT※/※1
SML-310YT※
Green (M, P, E) (Ta=25˚C, IF＝20mA)
Package
size(mm)
Luminous
Intensity
(mcd)
Height(mm)
F G H J K L M N P Q R S T U V W X
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
630 to 1000 1000 to 1800
Mini-mold
Chip LEDs 1608 0.8 SML-310MT※SML312ECT※
SML-310PT※SML312EC4T※
Blue (B) (Ta=25˚C, IF＝20mA)
Package
size(mm)
Luminous
Intensity
(mcd)
Height(mm)
G H J K L M N P Q R S T U V W
0.9 to 1.4 1.4 to 2.2 2.2 to 3.6 3.6 to 5.6 5.6 to 9.0
9 to 14 14 to 22 22 to 36 36 to 56 56 to 90
90 to 140
140 to 220 220 to 360 360 to 560 560 to 900
Mini-mold
Chip LEDs 1608 0.8 SML312BC4T
SML312BCT
Part No. Construction
∗ 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.
S M L 3 1 0 DT T 8 6
Special Code will be applied for
Emitting color B/E series.
∗ “−” will be taken out for
emitting color B/E series.
Series name Package type Chip Type Emitting Color Resin Color Taping Specifications Rank sign (Brightness Rank)∗
0
1
Standard Type
Low Current Type
2
High Brightness Type
T86
T87
T
Transparent Colorless
Cathode at sprocket hole side
Reverse of T86
W
MilkyWhite
V
U
Y
W
M
P
E
Red:630nm
Red:620nm
Yellow:587(590)nm
D
Orange:605nm
Yellow:590nm
Yellowish-Green:572nm
Green:560nm
Bluish-Green:527nm
B
Blue:470(466)nm
K
Packing Specification
ROHM LED products are being shipped with desiccant (silica gel) concluded in moisture-proof bags.
Pasting the moisture sensitive label on the outer surface of the moisture-proof bags or enclosing the humidity indication card inside the bag is available upon request.
Please contact the nearest sales office or distributer if necessary.
※Brightness on specification sheet include tolerance of within ±10%. ※1：IF=2mA
3/3
© 2012 ROHM Co., Ltd. All rights reserved.
www.rohm.com 2012.11 - Rev.C
R1102
A
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
Notice
ROHM Customer Support System
http://www.rohm.com/contact/
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
Notes
The information contained herein is subject to change without notice.
Before you use our Products, please contact our sales representative
and verify the latest specifica-
tions :
Although ROHM is continuously working to improve product reliability and quality, semicon-
ductors can break down and malfunction due to var ious factors.
Therefore, in order to prevent personal injury or fire arising from failure, please take safety
measures such as complying with the derating characteristics, implementing redundant and
fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no
responsibility for any damages arising out of the use of our Poducts beyond the rating specified by
ROHM.
Examples of application circuits, circuit constants and any other information contained herein are
provided only to illustrate the standard usage and operations of the Products. The peripheral
conditions must be taken into account when designing circuits for mass production.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly,
any license to use or exercise intellectual property or other rights held by ROHM or any other
parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of
such technical information.
The Products are intended for use in general electronic equipment (i.e. AV/OA devices, communi-
cation, consumer systems, gaming/entertainment sets) as well as the applications indicated in
this document.
The Products specified in this document are not designed to be radiation tolerant.
For use of our Products in applications requiring a high degree of reliability (as exemplified
below), please contact and consult with a ROHM representative : transportation equipment (i.e.
cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety
equipment, medical systems, servers, solar cells, and power transmission systems.
Do not use our Products in applications requiring extremely high reliability, such as aerospace
equipment, nuclear power control systems, and submarine repeaters.
ROHM shall have no responsibility for any damages or injury arising from non-compliance with
the recommended usage conditions and specifications contained herein.
ROHM has used reasonable care to ensur the accuracy of the information contained in this
document. However, ROHM does not warrants that such information is error-free, and ROHM
shall have no responsibility for any damages arising from any inaccuracy or misprint of such
information.
Please use the Products in accordance with any applicable environmental laws and regulations,
such as the RoHS Directive. For more details, including RoHS compatibility, please contact a
ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting
non-compliance with any applicable laws or regulations.
When providing our Products and technologies contained in this document to other countries,
you must abide by the procedures and provisions stipulated in all applicable export laws and
regulations, including without limitation the US Export Administration Regulations and the Foreign
Exchange and Foreign Trade Act.
This document, in part or in whole, may not be reprinted or reproduced without prior consent of
ROHM.
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