DATA SHEET
CITILED COB Series
Standard Type
Ra97 Super High CRI 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-P3560 02/16
Product Nomenclature
CLU048 - 18 12 C4 - 27 3 H7 K4
[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
Typ.97
[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-P3560 02/16
2. Performance Characteristics
2-1. Electro Optical Characteristics
Electro Optical Characteristics
( Tj=85C )
Nominal
CCT
CRI
Ra
Typ.
CLU048-1812C4-273H7K4
CLU048-1812C4-303H7K4
CLU048-1812C4-403H7K4
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
4000K
97
97
97
R9
Typ.
90
90
90
Luminous flux
( lm )
Efficacy Forward
( lm/W ) Current
Tc=25C*
( mA )
Typ.
Typ.
6,420
6,712
6,912
104
109
113
1,080
1,080
1,080
Voltage
( V)
Min.
47.8
47.8
47.8
Typ.
52.0
52.0
52.0
Max.
56.2
56.2
56.2
Thermal
Resistance
Rj-c
(
C/W )
0.25
0.25
0.25
Product code
T½=85C
Min.
5,163
5,398
5,559
Typ.
5,868
6,135
6,318
2-2. Absolute Maximum Ratings
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-P3560 02/16
2-3. Chromaticity Characteristics
( Rated current, Tj=85C )
Oval parameter
Color Region
Nominal
CCT
2700K
3-step MacAdam ellipse
3000K
4000K
Center Point
( x, y )
( 0.4577 , 0.4098 )
( 0.4339 , 0.4032 )
( 0.3818 , 0.3796 )
Major Axis
a
0.00774
0.00834
0.00939
Minor Axis
b
0.00411
0.00408
0.00402
Ellipse
Rotation Angle
θ
57.28
53.17
54.00
* 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.
* θ is the angle between the major axis of the ellipse and the x-axis, and a and b are the major and minor semi-axes of an ellipse.
(Ref. IEC 60081:1997 AnnexD)
0.45
x-y chart CIE1931
3,000K
2,700K
0.40
4,000K
Black
Body
Locus
y
0.35
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-P3560 02/16
3. Mechanical Dimensions
・Internal
Circuit
Marking 1 :
Serial No.
Marking 2 : H 18 12 ** **
CRI
CCT
Dies count in parallel
Dies count in series
Protection
device
Anode
LED device
Cathode
18 s 12 p
5
Ref.CE-P3560 02/16
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