[Data Sheet]
■Rank Reference of Brightness*
*Measurement tolerance:±10%
■Chromaticity Diagram
【SMLK18WBJCW】,【SMLK28WBJCW】
【SMLK18WBJDW】
[SMLK18WB/K28WB series]
(WB)
(Ta=25ºC, I
F
90mA)
ランク
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
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
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
SMLK18WBJCW
SMLK18WBJDW
SMLK28WBJCW
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34
CIE x
CIE y
0
1
2
3
4
5
(Ta=25℃、If=90mA)
x
y
x
y
x
y
x
y
x
y
x
y
0.286 0.244 0.280 0.252 0.296 0.259 0.291 0.268 0.313 0.284 0.310 0.297
0.280 0.252 0.273 0.261 0.291 0.268 0.285 0.279 0.310 0.297 0.307 0.312
0.291 0.268 0.285 0.279 0.310 0.297 0.307 0.312 0.330 0.330 0.330 0.347
0.296 0.259 0.291 0.268 0.313 0.284 0.310 0.297 0.330 0.310 0.330 0.330
Measurement tolerance:±0.01
50 1 2 3 4
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37
CIE x
CIE y
4
5
6
7
8
9
(Ta=25℃、If=90mA)
x
x
x
y
x
y
x
y
x
y
x
y
0.313 0.284 0.310 0.297 0.330 0.310 0.330 0.330 0.352 0.344 0.345 0.352
0.310 0.297 0.307 0.312 0.330 0.330 0.330 0.347 0.338 0.342 0.347 0.371
0.330 0.330 0.330 0.347 0.338 0.342 0.347 0.371 0.364 0.380 0.367 0.401
0.330 0.310 0.330 0.330 0.352 0.344 0.345 0.352 0.360 0.357 0.364 0.380
Measurement tolerance:±0.01
4 5 6 7 8 9
________________________________________________________
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©2018 ROHM Co., Ltd. All rights reserved
4/9
2018.3 - Rev.009
    
[Data Sheet]
■Taping(T86)
Unit:mm
Note)Tolerance is within ±0.2mm unless otherwise specified.
【SMLK18WB series】 【SMLK28WB series】
■Part No. Construction
■Packing Specification
ROHM LED products are being shipped with desiccant (silica gel) included in 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.
Pasting the moisture sensitive label on the outer surface of the moisture-proof bags
[SMLK18WB/K28WB series]
φ60
φ13
15.4
±1
+1
0
φ180
0
-3
0. 9
±0.1
0. 3
±0.0 5
±0.1
4
±0 .1
4. 8
2
±0.05
±0 .1
4
1. 7 5
±0. 1
2. 2
(4 . 75 )
±0 . 0 5
12
5. 5
±0 .2
φ1 . 5
0
+0.1
±0 . 1
φ60
φ13
15.4
±1
+1
0
φ180
0
-3
0. 9
±0.1
0. 3
±0 . 0 5
±0 . 1
4
±0.1
4 .8
2
±0 . 0 5
±0.1
4
1. 75
±0. 1
2. 2
( 4. 75 )
±0 . 0 5
12
5. 5
±0 . 2
φ1 . 5
0
+0 . 1
±0 . 1
*"-"will be taken out for emitting color Special Code will be applied for Chromaticity rank Rank sign
WB/B/E series. Emitting color WB/B/E series. (for white LED) (Brightness Rank)*
Series name Package Type Chip type Emitting Color Resin Color Taping Specification
SML
P1 0
V T
E1 1
U W
D1
2
U2 B
H1
3
D
M1
4
Y3
01
5
Y2 notice)S1 series、81 seires
Z1/ZN
6
Y
A1
7
W
81/82
8
M2
K1 M
*Concerning the Brightness rank.
S1 F
*Please refer to the rank chart above for
P2 P
luminous intensity classification.
52 E
*Part name is individual for each rank.
P34
B
*When shipped as sample,the part name will
P36
WB
be a representative part name.
VN
T
General products are free of ranks.
RGB
Please contact sales if rank appointment
SCM
01
is needed.
1S M L K 8 WB JC W 1
Standard Type
Red
Transparent Colorless
T86
Cathode at sprocket hole side(the top)
1
Orange
2 F
3
For white LED,
csthode at sprocket hole side
Low Current Type
Red
Milkey White
T87
Anode at sprocket hole side(the top)
Chip LED
1.0x0.6 t=0.2mm
1.6x0.8 t=0.36mm
1.6x0.8 t=0.55mm
4.5x2.0 t=0.6mm
Yellowish green
Black
2.0x1.25 t=0.8mm
Ultra High Brightness type
3.0x2.0 t=1.3mm
3.5x2.8 t=1.9mm
High Brightness type
Yellowish green
Red
Yellow
Yellow
Yellow
Yellow
Cathode at sprocket hole side(the back)
1.6x1.15 t=0.55mm
T68
Cathode at sprocket hole side(the top)
3.4x1.25 t=1.1mm
T86
3.2x1.6 t=1.85mm
Green
1.0x1.0 t=0.2mm
Green
1.3x1.5 t=0.6mm
Green
1.0x1.0 t=0.2mm
Blue
1.5x1.0 t=0.2mm
White
3.5x2.8 t=0.6mm
Phototransistors
Red/Green/Blue
Chip LED
3.0x1.5 t=2.2mm
________________________________________________________
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©2018 ROHM Co., Ltd. All rights reserved
5/9
2018.3 - Rev.009
    
[Data Sheet]
1.Storage
If the product is heated during the reflow under the condition of hygroscopic state,
it may vaporize and expand which will influence the performance of the product.
Therefore, the package is waterproof. Please use the product following the conditions:
・Using Conditions
・Baking
Bake the product in case of below:
①The expiration date is passed.
②The color of indicator (silica gel) turned from blue to colorless or from green to pink.
・Baking Conditions
2.Application Methods
2-1.Precaution for Drive System and Off Mode
Design the circuit without the electric load exceeding the ABSOLUTE MAXIMUM RATING that
please do not apply voltage neither forward nor reverse. Especially, for the products with the
Ag-paste used in the die bonding, there’s high possibility to cause electro migration and result
2-2.Derating
 The Derating Characteristics are based on the lifetime of luminous intensity and assumption
of degradation & color change of sealing resin or reflector. About its reliability,
2-3.Operation Life Span
There’s possibility for intensity of light drop according to working conditions and environments
(applied current, surrounding temperature and humidity, corrosive gases), please call our Sales
①Longtime intensity of light life
②On mode all the time
2-4.Applied Stress on Product
The top of the LED is very soft, which the silicon resin is used as sealing resin.
Therefore, please pay attention to the overstress on it which may influence its reliability.
2-5.Usage
The Product is LED. We are not responsible for the usage as the diode such as Protection Chip,
Temperature
Time
Humidity
[SMLK18WB/K28WB series]
■Precaution (Surface Mount Device)
Classification
Temperature
Humidity
Expiration Date
Remark
①Before using 5〜30℃ 30〜70%RH
Within 1 year
from Receiving
Storage with waterproof package
②After opening
package
5〜30℃ Below 70%RH Within 72h
with our desiccant (silica gel)
(Even if the product is within the expiration date.)
60±3℃
40〜48h
Below 20%RH
Remark
so please try not to apply stress on it.
・Recommend bake once.
applies on the products. If drive by constant voltage, it may cause current deviation of the LED and
result in deviation of luminous intensity, so we recommend to drive by constant current.
(Deviation of VF Value will cause deviation of current in LED.) Furthermore, for off mode,
in function failure.
please evaluate its using conditions and environment and use it after confirmed there is no problem.
staffs for inquiries about the concerned application below.
・Bake products in reel.
・Reel and embossed tape are easy to be deformed when baking,
Rectifier, Switching and so on.
Please storing in the airtight container
________________________________________________________
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©2018 ROHM Co., Ltd. All rights reserved
6/9
2018.3 - Rev.009

SMLK18WBJCW

Mfr. #:
Manufacturer:
ROHM Semiconductor
Description:
High Power LEDs - White Chip LED, Type=with reflector, Package=4.5x2.0(t=0.6), Color = White, ( Chromaticity=0.30,0.28, IV=5900( v_typ 21lm)mcd, IF=90mA, VF=3.9V, IF=90mA )
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union