DATA SHEET
CITILED COB Series
Standard Type
Ra70,80min. Model
CLU048-1812C4
Introduction
Performance Characteristics
Mechanical Dimensions
Characteristic Curves
Reliability
Packing Specification
Precaution
P 2
P 3
P 5
P 6
P 9
P 10
P 11
1
Ref.CE-P3702 05/16
Product Nomenclature
CLU048 - 18 12 C4 - 27 3 M2 K1
[1]
[1]
[2]
[3]
[4]
[5]
Product shape
Die count in series
Die count in parallel
Nominal CCT
CRI (Ra)
[2]
[3]
[4]
CLU048
18
12
2700K
Min.80
[5]
1. Introduction
1-1. Product Description
CITIZEN ELECTRONICS is the first COB manufacture. Our advanced knowledge and packaging technology for many
years has excellent reliability and high quality of our products. CITILED COB Series covers a wide range of luminous flux
from a 10W incandescent bulb to a 500W mercury lamp in general lighting sources. The element arrangement of LED
package is capable of utilizing light more effectively and higher performance.
The new version of CITILED COB Series succeed to reduce the thermal resistance significantly. New version creates
more options to match luminaire's products design (ex. High performance , Cost effective , Higher lumen density ,
Increased allowable max. If). The outline and LES size is same since version 1. 3-step MacAdam ellipse color definition at
Tj=85
℃
is available.
1-2. Features
2
Ref.CE-P3702 05/16
2. Performance Characteristics
2-1. Electro Optical Characteristics
Product code
Nominal
CCT
CRI
Ra
Min.
CLU048-1812C4-273M2K1
CLU048-1812C4-303M2K1
CLU048-1812C4-353M2K1
CLU048-1812C4-403M2K1
CLU048-1812C4-503M2K1
CLU048-1812C4-573M2K1
CLU048-1812C4-653M2K1
CLU048-1812C4-30AL7K3
CLU048-1812C4-40AL7K3
CLU048-1812C4-50AL7K3
Notes :
1. Citizen Electronics maintains forward voltage +/-3%, luminous flux +/-10%,Ra and R9 +/-1.
*Values of Luminous flux at Tc=25C are provided as reference only.
2700K
3000K
3500K
4000K
5000K
5700K
6500K
3000K
4000K
5000K
80
80
80
80
80
80
80
70
70
70
R9
Min.
0
0
0
0
0
0
0
-
-
-
Luminous flux
( lm )
Efficacy Forward
( lm/W ) Current
Tc=25C*
( mA )
Typ.
Typ.
8,519
8,905
9,079
9,181
9,311
9,404
9,479
9,410
9,718
9,865
139
145
148
149
152
153
154
153
158
161
1,080
1,080
1,080
1,080
1,080
1,080
1,080
1,080
1,080
1,080
Voltage
( V)
Min.
47.8
47.8
47.8
47.8
47.8
47.8
47.8
47.8
47.8
47.8
Typ.
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
Max.
56.2
56.2
56.2
56.2
56.2
56.2
56.2
56.2
56.2
56.2
Thermal
Resistance
Rj-c
(
C/W )
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
T½=85C
Min.
6,852
7,163
7,303
7,384
7,489
7,564
7,624
7,568
7,817
7,934
Typ.
7,787
8,140
8,299
8,392
8,511
8,596
8,664
8,601
8,883
9,017
2-2. Absolute Maximum Ratings
Parameter
Input Power (W)
Forward Current (mA)
Reverse Current (mA)
Operating Temperature (C)
Storage Temperature (C)
Case Temperature (C)
Junction Temperature (C)
Symbol
Pi
If
Ir
Top
Tst
Tc
Tj
Rating
175.8
2760
1
-40 ~ +100
-40 ~ +100
105
140
*2
*3
*1
*1
*1. Input power and forward current are the values when the LED is used within the range of the derating
curve in this data sheet.
*2. Refer to 3. Outline drawing for Tc measurement point.
*3. D.C. Current : Tj = Tc + Rj-c
×
Pi
3
Ref.CE-P3702 05/16
2-3. Chromaticity Characteristics
( Rated current, Tj=85C )
Oval parameter
Color Region
Nominal
CCT
2700K
3000K
3500K
3-step MacAdam ellipse
4000K
5000K
5700K
6500K
Nominal
CCT
3000K
ANSI C78. 377:2011
4000K
5000K
Center Point
( x, y )
( 0.4577 , 0.4098 )
( 0.4339 , 0.4032 )
( 0.4078 , 0.3929 )
( 0.3818 , 0.3796 )
( 0.3446 , 0.3551 )
( 0.3287 , 0.3417 )
( 0.3123 , 0.3283 )
Center Point
( x, y )
( 0.4339 , 0.4032 )
( 0.3818 , 0.3796 )
( 0.3446 , 0.3551 )
Major Axis
a
0.00774
0.00834
0.00951
0.00939
0.00822
0.00760
0.00669
Minor Axis
b
0.00411
0.00408
0.00417
0.00402
0.00354
0.00296
0.00285
ANSI parameter
a
( x, y )
b
( x, y )
c
( x, y )
d
( x, y )
Ellipse
Rotation Angle
θ
57.28
53.17
52.97
54.00
59.62
59.46
58.38
Color Region
0.4561 0.4259 0.4302 0.4171 0.4149 0.3820 0.4373 0.3892
0.4003 0.4034 0.3737 0.3879 0.3671 0.3583 0.3895 0.3708
0.3550 0.3752 0.3375 0.3619 0.3366 0.3372 0.3514 0.3480
* Color region stay within MacAdam 3-step ellipse from the chromaticity center.
* The chromaticity center refers to ANSI C78.377:2011.
Please refer to ANSI C78. 377 for the chromaticity center.
0.45
x-y chart CIE1931
3,000K
3,500K
2,700K
0.40
4,000K
5,000K
5,700K
Black
Body
Locus
y
0.35
6,500K
ANSI
3-step
0.30
0.30
0.35
0.40
x
0.45
0.50
Note : Citizen Electronics maintains chromaticity ( x, y ) +/-0.005
4
Ref.CE-P3702 05/16
3. Mechanical Dimensions
・
Internal Circuit
Marking 1 :
Serial No.
Marking 2 : H 18 12 ** **
CRI
CCT
Dies count in parallel
Dies count in series
CLU048
Protection
device
Anode
LED device
Cathode
18 s 12 p
5
Ref.CE-P3702 05/16
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