SMLK18WB/K28WB Series
■Features
• High heat radiation "PSML2" series
• Low package by flat frame structure
• High Luminous Intensity
■Outline
Data Sheet
■Size
4520 (1808)
4.5×2.0mm (t=0.6mm)
■Dimensions
4 . 5
±0.1
Color
Type
WB
■Recommended Solder Pattern
Anode index
4
0. 6
±0 .1
3 .5
④
①
1 .5
±0 .1
2
± 0.05
1. 98
1.1
1.74
④
3.75
③
0. 4
②
0 .2 5
0. 2 5
③
0 .2
1
1.4
SM
LK18 series
①
0 . 85
②
0. 3
③
④
③
②
1.5 4
SM
LK28 seri es
①
④
③
②
(unit : mm)
①
①
2. 6
3 .1 5
④
②
Tolerance : ±0.2
(unit : mm)
■Specifications
Absolute Maximum Ratings (Ta=25ºC)
Emitting
Electrical and Optical Characteristics (Ta=25ºC)
Forward Voltage V
F
Power
Forward
Dissipation
Peak Forward
Reverse
Operating Temp.
Storage Temp.
Reverse Current I
R
Chromaticity
Luminous Intensity IV
(x,y)
I
F
(mA)
(0.30, 0.28)
2.75
Luminous Intensity fV
Part No.
Chip Structure
Color
Current
Current
Voltage
Typ.
T
opr
(ºC)
T
stg
(ºC)
(V)
I
F
(mA)
Max.
(µA)
V
R
(V)
Min.
(cd)
Typ.
(cd)
I
F
(mA)
Typ.
(lm)
I
F
(mA)
P
D
(mW)
I
F
(mA)
I
FP
(mA)
V
R
(V)
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
InGaN White
675
150
230*
1
5
-40½+100 -40½+100
-
3.9
90
10
-
5
(0.34, 0.34)
5.9
90
4.8
6.0
5.9
90
21
22
21
90
-
(0.30, 0.28)
*1 : Duty 1/10, 1kHz
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
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©2018 ROHM Co., Ltd. All rights reserved
2018.3 - Rev.009
[SMLK18WB/K28WB series]
■Electrical Characteristics Curves
Fig.1 Forward Current
- Forward Voltages
[Data Sheet]
Reference
Fig.2 Luminous Intensity -
Atmosphere Temperature
I
F
=90mA
RELATIVE LUMINOUS INTENSITY [a.u.]
1000
1.6
1.4
1.2
FORWARD CURRENT : I
F
[mA]
Ta=25ºC
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
100
1
0.8
0.6
0.4
10
1
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
-40
-20
0
20
40
60
80
100
FORWARD VOLTAGE : V
F
[V]
ATMOSPHERE TEMPERATURE : Ta [ºC]
Fig.3 Luminous Intensity - Forward Current
1.4
1.2
1
0.8
0.6
0.4
0.2
0
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
Fig.4 Derating
MAXIMUM FORWARD CURRENT : [mA]
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
RELATIVE LUMINOUS INTENSITY
Ta=25ºC
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
0
15 30 45 60 75 90 105 120 135 150
-40 -20
0
20
40
60
80
100 120
FORWARD CURRENT : I
F
[mA]
AMBIENT TEMPERATURE : Ta [ºC]
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
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©2018 ROHM Co., Ltd. All rights reserved
2018.3 - Rev.009
[SMLK18WB/K28WB series]
■Viewing Angle
[Data Sheet]
Reference
SCANNING ANGLE (deg)
X-Y
X’ - Y’
SCANNING ANGLE (deg)
20°
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100
30°
20°
30°
40°
50°
60°
70°
80°
90°
100
10°
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100
40°
50°
60°
70°
80°
90°
100
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
50
0
50
50
0
50
RELATIVE INTENSITY (%)
RELATIVE INTENSITY (%)
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
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©2018 ROHM Co., Ltd. All rights reserved
2018.3 - Rev.009
[SMLK18WB/K28WB series]
■Rank Reference of Brightness*
[Data Sheet]
*Measurement tolerance:±10%
(Ta=25ºC, I
F
＝90mA)
½(WB)色
SMLK18WBJCW
SMLK18WBJDW
ランク
光度 (cd)
2.2〜2.8
2.8〜 3.3
3.3〜4.0
4.0 〜4.8 4.8 〜5.8
5.8〜7.0 7.0〜8.5
8.5〜10.2
C
D
E
F
G
H
J
K
L
M
10.2〜12.3 12.3〜14.8
14.8〜19 19〜21.8
21.8〜24.5 24.5〜27.2 27.2〜29.3 29.3〜32.6 32.6〜35.4
N
P
Q
R
S
T
U
SMLK28WBJCW
■Chromaticity Diagram
【SMLK18WBJCW】,【SMLK28WBJCW】
0.36
0.35
0.34
0.33
0.32
0.31
【SMLK18WBJDW】
0.41
0.40
0.39
0.38
CIE y
CIE y
5
4
3
2
1
0
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.37
0.36
0.35
0.34
0.33
0.32
0.31
0.30
0.29
0.28
0.30
0.31
0.32
0.33
0.34
0.35
9
8
7
6
5
4
0.36
0.37
0.30
0.29
0.28
0.27
0.26
0.25
0.24
0.23
CIE x
CIE x
（Ｔ½＝25℃、If=90mA)
x
0.286
0.280
0.291
0.296
（Ｔ½＝25℃、If=90mA)
x
0.313
0.310
0.330
0.330
0
y
0.244
0.252
0.268
0.259
x
0.280
0.273
0.285
0.291
1
y
0.252
0.261
0.279
0.268
x
0.296
0.291
0.310
0.313
2
y
0.259
0.268
0.297
0.284
x
0.291
0.285
0.307
0.310
3
y
0.268
0.279
0.312
0.297
x
0.313
0.310
0.330
0.330
4
y
0.284
0.297
0.330
0.310
x
0.310
0.307
0.330
0.330
5
4
y
0.297
0.312
0.347
0.330
x
0.284
0.297
0.330
0.310
x
0.310
0.307
0.330
0.330
5
y
0.297
0.312
0.347
0.330
x
0.330
0.330
0.338
0.352
6
y
0.310
0.330
0.342
0.344
x
0.330
0.330
0.347
0.345
7
y
0.330
0.347
0.371
0.352
x
0.352
0.338
0.364
0.360
8
y
0.344
0.342
0.380
0.357
x
0.345
0.347
0.367
0.364
9
y
0.352
0.371
0.401
0.380
Measurement tolerance：±0.01
Measurement tolerance：±0.01
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
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2018.3 - Rev.009
[SMLK18WB/K28WB series]
■Taping(T86)
【SMLK18WB series】
4
±0 .1
2
± 0.05
φ1 . 5
+0.1
0
Unit:½½
Note)Tolerance is within ±0.2mm unless otherwise specified.
[Data Sheet]
【SMLK28WB series】
1 . 7 5
± 0 .1
4
± 0.1
2
± 0 .05
± 0.0 5
φ1 . 5
+0 .1
0
1.75
± 0 . 1
± 0 .05
0.3
0.3
± 0 .0 5
±0.05
1 2
±0 . 2
4.8
4 .8
(4.75)
4
± 0 .1
4
± 0.1
± 0. 1
± 0.1
± 0. 1
( 4.75)
12
± 0 . 2
± 0 .1
5.5
± 0.1
5.5
± 0.1
2.2
0.9
2.2
0.9
15.4
±1
15.4
±1
+1
0
0
-3
+1
0
φ180
φ60
■Part No. Construction
*"-"will be taken out for emitting color
WB/B/E series.
Special Code will be applied for
Emitting color WB/B/E series.
Chromaticity rank
(for white LED）
Rank sign
(Brightness Rank)*
S
Series name
M
L
－
K
Package Type
φ13
1
8
Chip type
WB
JC
W
Resin Color
1
Taping Specification
2
F
Emitting Color
SML
Chip LED
P1
1.0x0.6 t=0.2mm
E1
1.6x0.8 t=0.36mm
D1
1.6x0.8 t=0.55mm
H1
M1
2.0x1.25 t=0.8mm
0
1
2
3
4
5
6
7
8
Standard Type
Low Current Type
V
U
U2
D
Y3
Y2
Y
W
M
F
P
E
B
WB
Red
Red
Red
Orange
Yellow
Yellow
Yellow
Yellow
Yellowish green
Green
Green
Green
Blue
White
Red/Green/Blue
T
B
Transparent Colorless
T86
T87
1
3
Cathode at sprocket hole side(the top)
W
Milkey White
Black
Anode at sprocket hole side(the top)
High Brightness type
For white LED,
csthode at sprocket hole side
01
3.0x2.0 t=1.3mm
Z1/ZN
3.5x2.8 t=1.9mm
3.4x1.25 t=1.1mm
Ultra High Brightness type
notice）S1 series、81 seires
T86
T68
Cathode at sprocket hole side(the back)
A1
1.6x1.15 t=0.55mm
81/82
Cathode at sprocket hole side(the top)
M2
Yellowish green
K1
4.5x2.0 t=0.6mm
S1
3.2x1.6 t=1.85mm
P2
1.0x1.0 t=0.2mm
52
1.3x1.5 t=0.6mm
P34
P36
*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.
1.0x1.0 t=0.2mm
1.5x1.0 t=0.2mm
VN
3.5x2.8 t=0.6mm
SCM
T Phototransistors
RGB
Chip LED
01
3.0x1.5 t=2.2mm
ROHM LED products are being shipped with desiccant (silica gel) included 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.
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
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©2018 ROHM Co., Ltd. All rights reserved
2018.3 - Rev.009
■Packing Specification
φ13
φ180
φ60
0
-3
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