Product Data Sheet
STW8C2SB – Mid-Power LED
Achieving the best system cost in Mid/High Power
Mid-Power LED – 3030 Series
STW8C2SB (Cool, Neutral, Warm)
RoHS
Product Brief
Description
Features and Benefits
•
This White Colored surface-mount LED
comes in standard package dimension.
Package Size : 3.0x3.0x0.6mm
•
It has a substrate made up of a molded
plastic reflector sitting on top of a lead
frame.
•
•
•
•
•
•
•
The die is attached within the reflector
cavity and the cavity is encapsulated by
silicone.
•
Thermally Enhanced Package Design
Mid Power to High Power up to 1.4W
Max. Driving Current 200mA
Compact Package Size
High Color Quality with CRI Min.80(R9>0)
Pb-free Reflow Soldering Application
Key Applications
•
•
•
•
The package design coupled with
careful selection of component
materials allow these products to
perform with high reliability.
Replacement lamps – Bulb, Tube
Commercial
Industrial
Residential
Table 1. Product Selection Table
CCT
Part Number
Color
Min.
Typ.
Max.
STW8C2SB
Cool White
4700K
5600K
7000K
STW8C2SB
Neutral White
3700K
4200K
4700K
STW8C2SB
Warm White
2100K
2700K
3700K
1
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Product Data Sheet
STW8C2SB – Mid-Power LED
Table of Contents
Index
•
Product Brief
1
•
Table of Contents
2
•
Performance Characteristics e
3
•
Characteristics Graph
5
•
Color Bin Structure
11
•
Mechanical Dimensions
23
•
Recommended Solder Pad
24
•
Reflow Soldering Characteristics
25
•
Emitter Tape & Reel Packaging
26
•
Product Nomenclature
28
•
Handling of Silicone Resin for LEDs
29
•
Precaution For Use
30
•
Company Information
33
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Product Data Sheet
STW8C2SB – Mid-Power LED
Performance Characteristics
Table 2. Product Selection Guide, IF = 100mA , T j = 25ºC, RH30%
Luminous Intensity
CCT (K) [1]
Part Number
Luminous Flux
IV (cd)
RANK
Typ.
[2]
[3]
ФV (lm)
CRI
Ra
Min
Max
Min
Max
Min.
K27
27.0
28.5
83.7
88.4
80
K28
28.5
30.0
88.4
93.0
80
L30
30.0
32.0
93
99.2
80
K27
27.0
28.5
83.7
88.4
80
K28
28.5
30.0
88.4
93.0
80
L30
30.0
32.0
93.0
99.2
80
K28
28.5
30.0
88.4
93.0
80
5000
L30
30.0
32.0
93.0
99.2
80
L32
32.0
34.0
99.2
105.4
80
4500
K28
L30
L32
28.5
30.0
32.0
30.0
32.0
34.0
86.9
91.5
97.6
91.5
97.6
103.7
80
80
80
K28
28.5
30.0
86.9
91.5
80
L30
30.0
32.0
91.5
97.6
80
L32
32.0
34.0
97.6
103.7
80
K27
27.0
28.5
81.0
85.5
80
K28
28.5
30.0
85.5
90.0
80
6500
5600
4000
STW8C2SB
3500
3000
2700
2450
L30
30.0
32.0
90.0
96.0
80
K27
27.0
28.5
81.0
85.5
80
K28
28.5
30.0
85.5
90.0
80
L30
K27
30.0
27.0
32.0
28.5
90.0
81.0
96.0
85.5
80
80
K28
28.5
30.0
85.5
90.0
80
L30
30.0
32.0
90.0
96.0
80
K21
21.0
24.0
63.0
72.0
80
K24
24.0
26.0
72.0
78.0
80
K26
26.0
27.0
78.0
81.0
80
K21
21.0
24.0
63.0
72.0
80
K24
24.0
26.0
72.0
78.0
80
2200
Notes :
(1) Correlated Color Temperature is derived from the CIE 1931 Chromaticity diagram.
(2) Seoul Semiconductor maintains a tolerance of 7% on Intensity and power measurements.
The luminous intensity IV was measured at the peak of the spatial pattern which may not be aligned with the
mechanical axis of the LED package.
(3) The lumen table is only for reference.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Performance Characteristics
Table 3. Characteristics, IF=100mA, T j= 25ºC, RH30%
Value
Parameter
Symbol
Unit
Min.
Typ.
Max.
IF
-
100
-
mA
VF
5.8
-
6.4
V
100mA
-
29.0
-
cd
150mA
-
41.2
-
cd
100mA
-
29.5
-
cd
150mA
-
41.9
-
cd
100mA
-
27.3
-
cd
150mA
-
38.8
-
cd
Ra
80
-
-
2Θ1/2
-
120
-
Deg.
Thermal resistance (J to S) [3]
RθJ-S
-
10
-
℃/W
ESD Sensitivity(HBM)
-
Forward Current
Forward
Voltage[1]
Luminous Intensity (5000K)[1]
Luminous Intensity (4000K)[1]
Luminous Intensity (2700K)[1]
Iv
Iv
Iv
CRI[1]
Viewing Angle
[2]
Class 3A JESD22-A114-E
Table 4. Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Forward Current
IF
200
mA
Power Dissipation
PD
1.44
W
Junction Temperature
Tj
125
ºC
Operating Temperature
Topr
-40~ + 85
ºC
Storage Temperature
Tstg
-40 ~ + 100
ºC
Notes :
(1) Tolerance : VF :±0.1V, IV :±7%, Ra :±2, x,y :±0.005
(2) 2Θ1/2 is the off-axis where the luminous intensity is 1/2 of the peak intensity.
(3) Thermal resistance : RthJS (Junction / solder)
•
LED’s properties might be different from suggested values like above and below tables if
operation condition will be exceeded our parameter range. Care is to be taken that power
dissipation does not exceed the absolute maximum rating of the product.
•
Thermal resistance can be increased substantially depending on the heat sink design/operating
condition, and the maximum possible driving current will decrease accordingly.
•
All measurements were made under the standardized environment of Seoul Semiconductor.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Characteristics Graph
Relative Emission Intensity (a.u)
Fig 1. Color Spectrum, T j = 25ºC, IF=100mA
2100~3700K
3700~4700K
4700~7000K
1.0
0.5
0.0
300
400
500
600
700
800
Wavelength [nm]
Fig 2. Radiant Pattern, T j = 25ºC, IF=100mA
Relative Intensity (%)
100
80
60
40
20
0
-100
-75
-50
-25
0
25
50
75
100
Angle [Degree]
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Product Data Sheet
STW8C2SB – Mid-Power LED
Characteristics Graph
Fig 3. Forward Voltage vs. Forward Current, T j = 25ºC
0.20
Forward Current [A]
0.15
0.10
0.05
0.00
0
1
2
3
4
5
6
7
8
Forward Voltage [V]
Fig 4. Forward Current vs. Relative Luminous Intensity, T j = 25ºC
2.0
Relative Luminous Intensity [a.u.]
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
20
40
60
80
100
120
140
160
180
200
Forward Current [mA]
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Product Data Sheet
STW8C2SB – Mid-Power LED
Characteristics Graph
Fig 5. Forward Current vs. CIE X, Y Shift, T j = 25ºC
(4200K~7000K)
0.362
0.360
CIE Y
0.358
20mA
50mA
100mA
0.356
150mA
200mA
0.354
0.352
0.350
0.342
0.343
0.344
0.345
0.346
0.347
0.348
CIE X
(2100K~4200K)
0.404
0.402
CIE Y
0.400
150mA
0.398
100mA 50mA
20mA
200mA
0.396
0.394
0.392
0.434
0.436
0.438
0.440
0.442
0.444
0.446
CIE X
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Product Data Sheet
STW8C2SB – Mid-Power LED
Characteristics Graph
Fig 6. Junction Temperature vs. Relative Luminous Intensity, IF=100mA
Relative Luminous Intensity [a.u.]
1.0
0.8
0.6
0.4
0.2
0.0
25
45
65
85
105
125
O
Ju nctio n Te m p era ture T j( C )
Fig 7. Junction Temperature vs. Relative Forward Voltage, IF=100mA
Relative Forward Voltage
1.0
0.8
0.6
0.4
0.2
0.0
25
45
65
85
105
125
O
Junction Tem perature T j ( C)
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Product Data Sheet
STW8C2SB – Mid-Power LED
Characteristics Graph
Fig 8. Chromaticity Coordinate vs. Junction Temperature, IF=100mA
(4200K~7000K)
0.360
0.355
CIE Y
0.350
o
25 C
0.345
o
70 C
o
100 C
0.340
o
125 C
0.335
0.330
0.325
0.320
0.325
0.330
0.335
0.340
0.345
0.350
CIE X
(2100K~4200K)
0.415
0.410
CIE Y
o
25 C
0.405
o
70 C
0.400
o
100 C
o
125 C
0.395
0.390
0.430
0.435
0.440
0.445
0.450
0.455
0.460
0.465
CIE X
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Product Data Sheet
STW8C2SB – Mid-Power LED
Characteristics Graph
Fig 9. Ambient Temperature vs. Maximum Forward Current, T j_max = 125℃
250
Forward Current [mA]
200
Rth j-a = 45℃/W
150
100
50
0
0
20
40
60
80
100
O
Ambient Temperature T [ C]
a
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Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
Table 5. Bin Code description, T j=25℃, IF=100mA
Luminous Intensity (cd)
Typical Forward Voltage (V)
Color Chromaticity
Coordinate
Part Number
Bin
Code
Min.
Max.
K21
21.0
24.0
K24
24.0
26.0
K26
26.0
27.0
K27
27.0
28.5
K28
28.5
30.0
L30
30.0
32.0
L32
32.0
34.0
STW8C2SB
Refer to page.12
Bin
Code
Min.
Max.
Z58
5.8
6.0
Z60
6.0
6.2
Z62
6.2
6.4
Table 6. Intensity rank distribution
Available ranks
CCT
CIE
IV Rank
60007000K
A
K26
K27
K28
L30
L32
53006000K
B
K26
K27
K28
L30
L32
4700 ~
5300K
C
K26
K27
K28
L30
L32
4200 ~
4700K
D
K26
K27
K28
L30
L32
3700 ~
4200K
E
K26
K27
K28
L30
L32
3200 ~
3700K
F
K26
K27
K28
L30
L32
2900 ~
3200K
G
K26
K27
K28
L30
L32
2600 ~
2900K
H
K26
K27
K28
L30
L32
2300 ~
2600K
J
K21
K24
K26
2100 ~
2300K
K
K21
K24
*Notes :
All measurements were made under the standardized environment of Seoul Semiconductor.
In order to ensure availability, single color rank will not be orderable.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram Tj=25℃, IF=100mA
0.46
0.44
0.42
G
CIE coord.(Y)
0.40
H
J
K
F
E
0.38
D
0.36
C
B
0.34
A
0.32
0.30
0.28
MACADAM 3STEP Rank
0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54
CIE coord.(X)
*Notes :
(1) Energy Star binning applied to all 2100~7000K.
(2) Measurement Uncertainty of the Color Coordinates : ± 0.005
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Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Cool white), Tj=25℃, IF=100mA
6000K
0.35
A41
6500K
0.34
A31
CIE Y
7000K
0.33
A21
A11
A32
A22
A12
A43
A33
A23
A13
0.32
A42
A44
A34
A24
A14
0.31
0.300
0.305
0.310
0.315
0.320
0.325
CIE X
A11
A21
A31
A41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3028
0.3304
0.3072
0.3349
0.3115
0.3393
0.3160
0.3437
0.3038
0.3256
0.3080
0.3299
0.3123
0.3342
0.3166
0.3384
0.3080
0.3299
0.3123
0.3342
0.3166
0.3384
0.3209
0.3426
0.3072
0.3349
0.3115
0.3393
0.3160
0.3437
0.3205
0.3481
A12
A22
A32
A42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3038
0.3256
0.3080
0.3299
0.3123
0.3342
0.3166
0.3384
0.3048
0.3209
0.3089
0.3249
0.3131
0.3290
0.3172
0.3331
0.3089
0.3249
0.3131
0.3290
0.3172
0.3331
0.3213
0.3371
0.3080
0.3299
0.3123
0.3342
0.3166
0.3384
0.3209
0.3426
A13
A23
A33
A43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3048
0.3209
0.3089
0.3249
0.3131
0.3290
0.3172
0.3331
0.3058
0.3161
0.3098
0.3200
0.3138
0.3239
0.3178
0.3277
0.3098
0.3200
0.3138
0.3239
0.3178
0.3277
0.3217
0.3316
0.3089
0.3249
0.3131
0.3290
0.3172
0.3331
0.3213
0.3371
A14
A24
A34
A44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3058
0.3161
0.3098
0.3200
0.3138
0.3239
0.3178
0.3277
0.3068
0.3113
0.3107
0.3150
0.3146
0.3187
0.3184
0.3224
0.3107
0.3150
0.3146
0.3187
0.3184
0.3224
0.3221
0.3261
0.3098
0.3200
0.3138
0.3239
0.3178
0.3277
0.3217
0.3316
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Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Cool white), Tj=25℃, IF=100mA
5300K
0.36
5600K
B41
B31
0.35 6000K
B42
B21
CIE Y
B32
B11
0.34
B43
B22
B33
B12
B44
B23
B34
B13
B24
0.33
0.32
0.320
B14
0.325
0.330
0.335
0.340
CIE X
B11
B21
B31
B41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3207
0.3462
0.3250
0.3501
0.3292
0.3539
0.3334
0.3578
0.3211
0.3407
0.3252
0.3444
0.3293
0.3481
0.3333
0.3518
0.3252
0.3444
0.3293
0.3481
0.3333
0.3518
0.3374
0.3554
0.3250
0.3501
0.3292
0.3539
0.3334
0.3578
0.3376
0.3616
B12
B22
B32
B42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3211
0.3407
0.3252
0.3444
0.3293
0.3481
0.3333
0.3518
0.3215
0.3353
0.3254
0.3388
0.3293
0.3423
0.3332
0.3458
0.3254
0.3388
0.3293
0.3423
0.3332
0.3458
0.3371
0.3493
0.3252
0.3444
0.3293
0.3481
0.3333
0.3518
0.3374
0.3554
B13
B23
B33
B43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3215
0.3353
0.3254
0.3388
0.3293
0.3423
0.3332
0.3458
0.3218
0.3298
0.3256
0.3331
0.3294
0.3364
0.3331
0.3398
0.3256
0.3331
0.3294
0.3364
0.3331
0.3398
0.3369
0.3431
0.3254
0.3388
0.3293
0.3423
0.3332
0.3458
0.3371
0.3493
B14
B24
B34
B44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3218
0.3298
0.3256
0.3331
0.3294
0.3364
0.3331
0.3398
0.3222
0.3243
0.3258
0.3275
0.3294
0.3306
0.3330
0.3338
0.3258
0.3275
0.3294
0.3306
0.3330
0.3338
0.3366
0.3369
0.3256
0.3331
0.3294
0.3364
0.3331
0.3398
0.3369
0.3431
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Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Cool white), Tj=25℃, IF=100mA
0.38
4700K
5000K
0.37
C41
C31
CIE Y
5300K
0.36
C42
C21
C11
C32
C22
C43
C12
C33
C23
0.35
C44
C13
C34
C24
0.34
0.335
C14
0.340
0.345
0.350
0.355
CIE X
C11
C21
C31
C41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3376
0.3616
0.3420
0.3652
0.3463
0.3687
0.3507
0.3724
0.3374
0.3554
0.3415
0.3588
0.3457
0.3622
0.3500
0.3657
0.3415
0.3588
0.3457
0.3622
0.3500
0.3657
0.3542
0.3692
0.3420
0.3652
0.3463
0.3687
0.3507
0.3724
0.3551
0.3760
C12
C22
C32
C42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3374
0.3554
0.3415
0.3588
0.3457
0.3622
0.3500
0.3657
0.3371
0.3493
0.3411
0.3525
0.3452
0.3558
0.3492
0.3591
0.3411
0.3525
0.3452
0.3558
0.3492
0.3591
0.3533
0.3624
0.3415
0.3588
0.3457
0.3622
0.3500
0.3657
0.3542
0.3692
C13
C23
C33
C43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3371
0.3493
0.3411
0.3525
0.3452
0.3558
0.3492
0.3591
0.3369
0.3431
0.3407
0.3462
0.3446
0.3493
0.3485
0.3524
0.3407
0.3462
0.3446
0.3493
0.3485
0.3524
0.3523
0.3555
0.3411
0.3525
0.3452
0.3558
0.3492
0.3591
0.3533
0.3624
C14
C24
C34
C44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3369
0.3431
0.3407
0.3462
0.3446
0.3493
0.3485
0.3524
0.3366
0.3369
0.3403
0.3399
0.3440
0.3428
0.3477
0.3458
0.3403
0.3399
0.3440
0.3428
0.3477
0.3458
0.3514
0.3487
0.3407
0.3462
0.3446
0.3493
0.3485
0.3524
0.3523
0.3555
Rev4.8, Mar 11, 2019
15
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Neutral white), Tj=25℃, IF=100mA
4200K
0.39
4500K
0.38
CIE Y
4700K
D42
D21
D11
0.37
D41
D31
D32
D22
D43
D12
D33
D23
0.36
D13
D44
D34
D24
0.35
0.34
0.350
D14
0.355
0.360
0.365
0.370
0.375
CIE X
D11
D21
D31
D41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3548
0.3736
0.3595
0.3770
0.3641
0.3804
0.3689
0.3839
0.3539
0.3668
0.3584
0.3701
0.3628
0.3733
0.3674
0.3767
0.3584
0.3701
0.3628
0.3733
0.3674
0.3767
0.3720
0.3800
0.3595
0.3770
0.3641
0.3804
0.3689
0.3839
0.3736
0.3874
D12
D22
D32
D42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3539
0.3668
0.3584
0.3701
0.3628
0.3733
0.3674
0.3767
0.3530
0.3601
0.3573
0.3632
0.3616
0.3663
0.3659
0.3694
0.3573
0.3632
0.3616
0.3663
0.3659
0.3694
0.3703
0.3726
0.3584
0.3701
0.3628
0.3733
0.3674
0.3767
0.3720
0.3800
D13
D23
D33
D43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3530
0.3601
0.3573
0.3632
0.3616
0.3663
0.3659
0.3694
0.3520
0.3533
0.3562
0.3562
0.3603
0.3592
0.3645
0.3622
0.3562
0.3562
0.3603
0.3592
0.3645
0.3622
0.3687
0.3652
0.3573
0.3632
0.3616
0.3663
0.3659
0.3694
0.3703
0.3726
D14
D24
D34
D44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3520
0.3533
0.3562
0.3562
0.3603
0.3592
0.3645
0.3622
0.3511
0.3465
0.3551
0.3493
0.3590
0.3521
0.3630
0.3550
0.3551
0.3493
0.3590
0.3521
0.3630
0.3550
0.3670
0.3578
0.3562
0.3562
0.3603
0.3592
0.3645
0.3622
0.3687
0.3652
Rev4.8, Mar 11, 2019
16
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Neutral white), Tj=25℃, IF=100mA
0.41
3700K
0.40
4000K
E41
E31
CIE Y
0.39
4200K
E21
E42
E32
E11
E22
0.38
E43
E12
E33
E23
E13
0.37
E44
E34
E24
E14
0.36
0.35
0.365
0.370
0.375
0.380
0.385
0.390
0.395
0.400
0.405
CIE X
E11
E21
E31
E41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3736
0.3874
0.3804
0.3917
0.3871
0.3959
0.3939
0.4002
0.3720
0.3800
0.3784
0.3841
0.3849
0.3881
0.3914
0.3922
0.3784
0.3841
0.3849
0.3881
0.3914
0.3922
0.3979
0.3962
0.3804
0.3917
0.3871
0.3959
0.3939
0.4002
0.4006
0.4044
E12
E22
E32
E42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3720
0.3800
0.3784
0.3841
0.3849
0.3881
0.3914
0.3922
0.3703
0.3726
0.3765
0.3765
0.3828
0.3803
0.3890
0.3842
0.3765
0.3765
0.3828
0.3803
0.3890
0.3842
0.3952
0.3880
0.3784
0.3841
0.3849
0.3881
0.3914
0.3922
0.3979
0.3962
E13
E23
E33
E43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3703
0.3726
0.3765
0.3765
0.3828
0.3803
0.3890
0.3842
0.3687
0.3652
0.3746
0.3689
0.3806
0.3725
0.3865
0.3762
0.3746
0.3689
0.3806
0.3725
0.3865
0.3762
0.3925
0.3798
0.3765
0.3765
0.3828
0.3803
0.3890
0.3842
0.3952
0.3880
E14
E24
E34
E44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3687
0.3652
0.3746
0.3689
0.3806
0.3725
0.3865
0.3762
0.3670
0.3578
0.3727
0.3613
0.3784
0.3647
0.3841
0.3682
0.3727
0.3613
0.3784
0.3647
0.3841
0.3682
0.3898
0.3716
0.3746
0.3689
0.3806
0.3725
0.3865
0.3762
0.3925
0.3798
Rev4.8, Mar 11, 2019
17
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Warm white), Tj=25℃, IF=100mA
0.42
3200K
3500K
0.41
3700K
CIE Y
0.40
F21
F11
F42
F32
F22
F12
0.39
F41
F31
F43
F33
F23
F44
F13
F34
0.38
F24
F14
0.37
0.39
0.40
0.41
0.42
0.43
CIE X
F11
F21
F31
F41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3996
0.4015
0.4071
0.4052
0.4146
0.4089
0.4223
0.4127
0.3969
0.3934
0.4042
0.3969
0.4114
0.4005
0.4187
0.4041
0.4042
0.3969
0.4114
0.4005
0.4187
0.4041
0.4261
0.4077
0.4071
0.4052
0.4146
0.4089
0.4223
0.4127
0.4299
0.4165
F12
F22
F32
F42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3969
0.3934
0.4042
0.3969
0.4114
0.4005
0.4187
0.4041
0.3943
0.3853
0.4012
0.3886
0.4082
0.3920
0.4152
0.3955
0.4012
0.3886
0.4082
0.3920
0.4152
0.3955
0.4223
0.3990
0.4042
0.3969
0.4114
0.4005
0.4187
0.4041
0.4261
0.4077
F13
F23
F33
F43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3943
0.3853
0.4012
0.3886
0.4082
0.3920
0.4152
0.3955
0.3916
0.3771
0.3983
0.3803
0.4049
0.3836
0.4117
0.3869
0.3983
0.3803
0.4049
0.3836
0.4117
0.3869
0.4185
0.3902
0.4012
0.3886
0.4082
0.3920
0.4152
0.3955
0.4223
0.3990
F14
F24
F34
F44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.3916
0.3771
0.3983
0.3803
0.4049
0.3836
0.4117
0.3869
0.3889
0.3690
0.3953
0.3721
0.4017
0.3751
0.4082
0.3783
0.3953
0.3721
0.4017
0.3751
0.4082
0.3783
0.4147
0.3814
0.3983
0.3803
0.4049
0.3836
0.4117
0.3869
0.4185
0.3902
Rev4.8, Mar 11, 2019
18
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Warm white), Tj=25℃, IF=100mA
0.43
2900K
3000K
3200K
0.42
G21
G11
G42
CIE Y
0.41
G32
G22
G12
0.40
G13
0.39
G14
G24
G23
G41
G31
G43
G33
G44
G34
0.38
0.41
0.42
0.43
0.44
0.45
0.46
CIE X
G11
G21
G31
G41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4299
0.4165
0.4364
0.4188
0.4430
0.4212
0.4496
0.4236
0.4261
0.4077
0.4324
0.4099
0.4387
0.4122
0.4451
0.4145
0.4324
0.4100
0.4387
0.4122
0.4451
0.4145
0.4514
0.4168
0.4365
0.4189
0.4430
0.4212
0.4496
0.4236
0.4562
0.4260
G12
G22
G32
G42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4261
0.4077
0.4324
0.4100
0.4387
0.4122
0.4451
0.4145
0.4223
0.3990
0.4284
0.4011
0.4345
0.4033
0.4406
0.4055
0.4284
0.4011
0.4345
0.4033
0.4406
0.4055
0.4468
0.4077
0.4324
0.4100
0.4387
0.4122
0.4451
0.4145
0.4515
0.4168
G13
G23
G33
G43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4223
0.3990
0.4284
0.4011
0.4345
0.4033
0.4406
0.4055
0.4185
0.3902
0.4243
0.3922
0.4302
0.3943
0.4361
0.3964
0.4243
0.3922
0.4302
0.3943
0.4361
0.3964
0.4420
0.3985
0.4284
0.4011
0.4345
0.4033
0.4406
0.4055
0.4468
0.4077
G14
G24
G34
G44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4243
0.3922
0.4302
0.3943
0.4302
0.3943
0.4361
0.3964
0.4203
0.3834
0.4259
0.3853
0.4259
0.3853
0.4316
0.3873
0.4147
0.3814
0.4203
0.3834
0.4316
0.3873
0.4373
0.3893
0.4185
0.3902
0.4243
0.3922
0.4361
0.3964
0.4420
0.3985
Rev4.8, Mar 11, 2019
19
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Warm white), Tj=25℃, IF=100mA
0.44
0.43
CIE Y
H21
H11
0.42
H13
H23
0.40
H14
H34
H24
H32
H22
H12
0.41
2600K
2700K
2900K
H31
H41
H42
H43
H33
H44
0.39
0.38
0.43
0.44
0.45
0.46
0.47
0.48
CIE X
H11
H21
H31
H41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4562
0.4260
0.4625
0.4275
0.4687
0.4289
0.4750
0.4304
0.4515
0.4168
0.4575
0.4182
0.4636
0.4197
0.4697
0.4211
0.4575
0.4182
0.4636
0.4197
0.4697
0.4211
0.4758
0.4225
0.4625
0.4275
0.4687
0.4289
0.4750
0.4304
0.4810
0.4319
H12
H22
H32
H42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4515
0.4168
0.4575
0.4182
0.4636
0.4197
0.4697
0.4211
0.4468
0.4077
0.4526
0.4090
0.4585
0.4104
0.4644
0.4118
0.4526
0.4090
0.4585
0.4104
0.4644
0.4118
0.4703
0.4132
0.4575
0.4182
0.4636
0.4197
0.4697
0.4211
0.4758
0.4225
H13
H23
H33
H43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4468
0.4077
0.4526
0.4090
0.4585
0.4104
0.4644
0.4118
0.4420
0.3985
0.4477
0.3998
0.4534
0.4012
0.4591
0.4025
0.4477
0.3998
0.4534
0.4012
0.4591
0.4025
0.4648
0.4038
0.4526
0.4090
0.4585
0.4104
0.4644
0.4118
0.4703
0.4132
H14
H24
H34
H44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4420
0.3985
0.4477
0.3998
0.4534
0.4012
0.4591
0.4025
0.4373
0.3893
0.4428
0.3906
0.4483
0.3919
0.4538
0.3932
0.4428
0.3906
0.4483
0.3919
0.4538
0.3932
0.4593
0.3944
0.4477
0.3998
0.4534
0.4012
0.4591
0.4025
0.4648
0.4038
Rev4.8, Mar 11, 2019
20
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Warm white), Tj=25℃, IF=100mA
0.44
0.43
J11
CIE Y
0.42
J12
0.41
0.40
J14
J21
J22
J32
J43
J13
J23
J33
J24
J34
J44
2300K
2450K
2600K
J31
J41
J42
0.39
0.45
0.46
0.47
0.48
0.49
0.50
0.51
CIE X
J11
J21
J31
J41
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4810
0.4319
0.4877
0.4327
0.4942
0.4335
0.5006
0.4342
0.4877
0.4327
0.4942
0.4335
0.5006
0.4342
0.5070
0.4350
0.4821
0.4233
0.4883
0.4241
0.4946
0.4248
0.5008
0.4256
0.4756
0.4225
0.4821
0.4233
0.4883
0.4241
0.4946
0.4248
J12
J22
J32
J42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4756
0.4225
0.4821
0.4233
0.4883
0.4241
0.4946
0.4248
0.4821
0.4233
0.4883
0.4241
0.4946
0.4248
0.5008
0.4256
0.4764
0.4139
0.4825
0.4147
0.4885
0.4154
0.4946
0.4162
0.4702
0.4132
0.4764
0.4139
0.4825
0.4147
0.4885
0.4154
J13
J23
J33
J43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4702
0.4132
0.4764
0.4139
0.4825
0.4147
0.4885
0.4154
0.4764
0.4139
0.4825
0.4147
0.4885
0.4154
0.4946
0.4162
0.4707
0.4045
0.4766
0.4053
0.4825
0.4060
0.4884
0.4067
0.4647
0.4038
0.4707
0.4045
0.4766
0.4053
0.4825
0.4060
J14
J24
J34
J44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4647
0.4038
0.4707
0.4045
0.4766
0.4053
0.4825
0.4060
0.4707
0.4045
0.4766
0.4053
0.4825
0.4060
0.4884
0.4067
0.4650
0.3951
0.4708
0.3959
0.4765
0.3966
0.4822
0.3973
0.4593
0.3944
0.4650
0.3951
0.4708
0.3959
0.4765
0.3966
Rev4.8, Mar 11, 2019
21
www.seoulsemicon.com
Product Data Sheet
STW8C2SB – Mid-Power LED
Color Bin Structure
CIE Chromaticity Diagram (Warm white), Tj=25℃, IF=100mA
0.44
2300K
CIE Y
0.43
2200K
K11
K21
K22
K32 K42
0.42
K12
0.41
K13 K23 K33
2100K
K31 K41
K43
K14 K24 K34 K44
0.40
0.39
0.48
0.49
0.50
0.51
0.52
0.53
0.54
CIE X
K11
CIE X
K21
K31
K41
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.5070
0.4350
0.5135
0.4348
0.5200
0.4345
0.5265
0.4342
0.5008
0.4256
0.5071
0.4254
0.5134
0.4253
0.5197
0.4251
0.5071
0.4254
0.5134
0.4253
0.5197
0.4251
0.5260
0.4249
0.5135
0.4348
0.5200
0.4345
0.5265
0.4342
0.5330
0.4340
K12
K22
K32
K42
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.5008
0.4256
0.5071
0.4254
0.5134
0.4253
0.5197
0.4251
0.4946
0.4162
0.5007
0.4161
0.5069
0.4160
0.5130
0.4159
0.5007
0.4161
0.5069
0.4160
0.5130
0.4159
0.5191
0.4158
0.5071
0.4254
0.5134
0.4253
0.5197
0.4251
0.5260
0.4249
K13
K23
K33
K43
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4946
0.4162
0.5007
0.4161
0.5069
0.4160
0.5130
0.4159
0.4884
0.4067
0.4943
0.4067
0.5003
0.4067
0.5062
0.4067
0.4943
0.4067
0.5003
0.4067
0.5062
0.4067
0.5121
0.4067
0.5007
0.4161
0.5069
0.4160
0.5130
0.4159
0.5191
0.4158
K14
K24
K34
K44
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
CIE X
CIE Y
0.4884
0.4067
0.4943
0.4067
0.5003
0.4067
0.5062
0.4067
0.4822
0.3973
0.4879
0.3974
0.4937
0.3974
0.4994
0.3975
0.4879
0.3974
0.4937
0.3974
0.4994
0.3975
0.5051
0.3975
0.4943
0.4067
0.5003
0.4067
0.5062
0.4067
0.5121
0.4067
Rev4.8, Mar 11, 2019
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Product Data Sheet
STW8C2SB – Mid-Power LED
Mechanical Dimensions
Top View
Bottom View
Cathode
Anode (+)
Circuit
Side View
Cathode
1
Anode
2
ESD Protection Device
(1) All dimensions are in millimeters.
(2) Scale : none
(3) Undefined tolerance is ±0.2mm
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Product Data Sheet
STW8C2SB – Mid-Power LED
Recommended Solder Pad
Notes :
(1) All dimensions are in millimeters.
(2) Scale : none
(3) This drawing without tolerances are for reference only
(4) Undefined tolerance is ±0.1mm
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Product Data Sheet
STW8C2SB – Mid-Power LED
Reflow Soldering Characteristics
IPC/JEDEC J-STD-020
Table 7.
Profile Feature
Sn-Pb Eutectic Assembly
Pb-Free Assembly
Average ramp-up rate (Tsmax to Tp)
3° C/second max.
3° C/second max.
Preheat
- Temperature Min (Tsmin)
- Temperature Max (Tsmax)
- Time (Tsmin to Tsmax) (ts)
100 °C
150 °C
60-120 seconds
150 °C
200 °C
60-180 seconds
Time maintained above:
- Temperature (TL)
- Time (tL)
183 °C
60-150 seconds
217 °C
60-150 seconds
Peak Temperature (Tp)
215℃
260℃
Time within 5°C of actual Peak
Temperature (tp)2
10-30 seconds
20-40 seconds
Ramp-down Rate
6 °C/second max.
6 °C/second max.
Time 25°C to Peak Temperature
6 minutes max.
8 minutes max.
Caution
(1) Reflow soldering is recommended not to be done more than two times. In the case of more than
24 hours passed soldering after first, LEDs will be damaged.
(2) Repairs should not be done after the LEDs have been soldered. When repair is unavoidable,
suitable tools must be used.
(3) Die slug is to be soldered.
(4) When soldering, do not put stress on the LEDs during heating.
(5) After soldering, do not warp the circuit board.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Emitter Tape & Reel Packing
Anode (+)
( Tolerance: ±0.2, Unit: mm )
(1) Quantity : 4,500pcs/Reel
(2) Cumulative Tolerance : Cumulative Tolerance/10 pitches to be ±0.2mm
(3) Adhesion Strength of Cover Tape
Adhesion strength to be 0.1-0.7N when the cover tape is turned off from the carrier tape
at the angle of 10˚ to the carrier tape.
(4) Package : P/N, Manufacturing data Code No. and Quantity to be indicated on a damp proof Package.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Emitter Tape & Reel Packing
Reel
Aluminum Bag
Outer Box
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Product Data Sheet
STW8C2SB – Mid-Power LED
Product Nomenclature
Table 8. Part Numbering System : X1X2X3X4X5X6X7X8
Part Number Code
Description
Part Number
Value
X1
Company
S
X2
Top View LED series
T
X3X4
Color Specification
W8
CRI 80
X5
Package series
C
C series
X6X7
Characteristic code
2S
X8
Revision
B
Table 9. Lot Numbering System :Y1Y2Y3Y4Y5Y6Y7Y8Y9Y10–Y11Y12Y13Y14Y15Y16Y17
Lot Number Code
Description
Y1Y2
Year
Y3
Month
Y4Y5
Day
Y6
Top View LED series
Y7Y8Y9Y10
Mass order
Y11Y12Y13Y14Y15Y16Y17
Internal Number
Rev4.8, Mar 11, 2019
Lot Number
28
Value
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Product Data Sheet
STW8C2SB – Mid-Power LED
Handling of Silicone Resin for LEDs
(1) During processing, mechanical stress on the surface should be minimized as much as possible.
Sharp objects of all types should not be used to pierce the sealing compound.
(2) In general, LEDs should only be handled from the side. By the way, this also applies to LEDs
without a silicone sealant, since the surface can also become scratched.
(3) When populating boards in SMT production, there are basically no restrictions regarding the form
of the pick and place nozzle, except that mechanical pressure on the surface of the resin must be
prevented. This is assured by choosing a pick and place nozzle which is larger than the LED’s
reflector area.
(4) Silicone differs from materials conventionally used for the manufacturing of LEDs. These
conditions must be considered during the handling of such devices. Compared to standard
encapsulants, silicone is generally softer, and the surface is more likely to attract dust.
As mentioned previously, the increased sensitivity to dust requires special care during processing.
In cases where a minimal level of dirt and dust particles cannot be guaranteed, a suitable cleaning
solution must be applied to the surface after the soldering of components.
(5) SSC suggests using isopropyl alcohol for cleaning. In case other solvents are used, it must be
assured that these solvents do not dissolve the package or resin.
Ultrasonic cleaning is not recommended. Ultrasonic cleaning may cause damage to the LED.
(6) Please do not mold this product into another resin (epoxy, urethane, etc) and do not handle this.
product with acid or sulfur material in sealed space.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Precaution for Use
(1) Storage
To avoid the moisture penetration, we recommend store in a dry box with a desiccant.
The recommended storage temperature range is 5℃ to 30℃ and a maximum humidity of
RH50%.
(2) Use Precaution after Opening the Packaging
Use SMT techniques properly when you solder the LED as separation of the lens may affect the light
output efficiency.
Pay attention to the following:
a. Recommend conditions after opening the package
- Sealing / Temperature : 5 ~ 40℃ Humidity : less than RH30%
b. If the package has been opened more than 4 week(MSL_2a) or the color of the desiccant
changes, components should be dried for 10-12hr at 60±5℃
(3) Do not apply mechanical force or excess vibration during the cooling process to normal
temperature after soldering.
(4) Do not rapidly cool device after soldering.
(5) Components should not be mounted on warped (non coplanar) portion of PCB.
(6) Radioactive exposure is not considered for the products listed here in.
(7) Gallium arsenide is used in some of the products listed in this publication.
These products are dangerous if they are burned or shredded in the process of disposal.
It is also dangerous to drink the liquid or inhale the gas generated by such products when
chemically disposed of.
(8) This device should not be used in any type of fluid such as water, oil, organic solvent and etc.
When washing is required, IPA (Isopropyl Alcohol) should be used.
(9) When the LEDs are in operation the maximum current should be decided after measuring
the package temperature.
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Product Data Sheet
STW8C2SB – Mid-Power LED
Precaution for Use
(10) The appearance and specifications of the product may be modified for improvement without
notice.
(11) Long time exposure of sunlight or occasional UV exposure will cause lens discoloration.
(12) VOCs (Volatile organic compounds) emitted from materials used in the construction of fixtures
can penetrate silicone encapsulants of LEDs and discolor when exposed to heat and photonic
energy. The result can be a significant loss of light output from the fixture. Knowledge of the
properties of the materials selected to be used in the construction of fixtures can help prevent
these issues.
(13) Attaching LEDs, do not use adhesives that outgas organic vapor.
(14) The driving circuit must be designed to allow forward voltage only when it is ON or OFF.
If the reverse voltage is applied to LED, migration can be generated resulting in LED damage.
(15) Similar to most Solid state devices;
LEDs are sensitive to Electro-Static Discharge (ESD) and Electrical Over Stress (EOS).
Below is a list of suggestions that Seoul Semiconductor purposes to minimize these effects.
a. ESD (Electro Static Discharge)
Electrostatic discharge (ESD) is the defined as the release of static electricity when two objects come
into contact. While most ESD events are considered harmless, it can be an expensive problem in
many industrial environments during production and storage. The damage from ESD to an LEDs may
cause the product to demonstrate unusual characteristics such as:
- Increase in reverse leakage current lowered turn-on voltage
- Abnormal emissions from the LED at low current
The following recommendations are suggested to help minimize the potential for an ESD event.
One or more recommended work area suggestions:
- Ionizing fan setup
- ESD table/shelf mat made of conductive materials
- ESD safe storage containers
One or more personnel suggestion options:
- Antistatic wrist-strap
- Antistatic material shoes
- Antistatic clothes
Environmental controls:
- Humidity control (ESD gets worse in a dry environment)
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Product Data Sheet
STW8C2SB – Mid-Power LED
Precaution for Use
b. EOS (Electrical Over Stress)
Electrical Over-Stress (EOS) is defined as damage that may occur when an electronic device is
subjected to a current or voltage that is beyond the maximum specification limits of the device.
The effects from an EOS event can be noticed through product performance like:
- Changes to the performance of the LED package
(If the damage is around the bond pad area and since the package is completely encapsulated
the package may turn on but flicker show severe performance degradation.)
- Changes to the light output of the luminaire from component failure
- Components on the board not operating at determined drive power
Failure of performance from entire fixture due to changes in circuit voltage and current across total
circuit causing trickle down failures. It is impossible to predict the failure mode of every LED exposed
to electrical overstress as the failure modes have been investigated to vary, but there are some
common signs that will indicate an EOS event has occurred:
- Damaged may be noticed to the bond wires (appearing similar to a blown fuse)
- Damage to the bond pads located on the emission surface of the LED package
(shadowing can be noticed around the bond pads while viewing through a microscope)
- Anomalies noticed in the encapsulation and phosphor around the bond wires.
- This damage usually appears due to the thermal stress produced during the EOS event.
c. To help minimize the damage from an EOS event Seoul Semiconductor recommends utilizing:
- A surge protection circuit
- An appropriately rated over voltage protection device
- A current limiting device
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Product Data Sheet
STW8C2SB – Mid-Power LED
Company Information
Published by
Seoul Semiconductor © 2013 All Rights Reserved.
Company Information
Seoul Semiconductor (www.SeoulSemicon.com) manufacturers and packages a wide selection of
light emitting diodes (LEDs) for the automotive, general illumination/lighting, Home appliance, signage
and back lighting markets. The company is the world’s fifth largest LED supplier, holding more than
10,000 patents globally, while offering a wide range of LED technology and production capacity in
areas such as “nPola”, "Acrich", the world’s first commercially produced AC LED, and "Acrich MJT Multi-Junction Technology" a proprietary family of high-voltage LEDs.
The company’s broad product portfolio includes a wide array of package and device choices such as
Acrich and Acirch2, high-brightness LEDs, mid-power LEDs, side-view LEDs, and through-hole type
LEDs as well as custom modules, displays, and sensors.
Legal Disclaimer
Information in this document is provided in connection with Seoul Semiconductor products. With
respect to any examples or hints given herein, any typical values stated herein and/or any information
regarding the application of the device, Seoul Semiconductor hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual
property rights of any third party. The appearance and specifications of the product can be changed
to improve the quality and/or performance without notice.
Rev4.8, Mar 11, 2019
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