SPECIFICATIONS
1/9
1. Scope of Application
These specifications are applied to the chip type LED lamp , model CL-L251-HC4L1-C.
2. Part code
CL-L251- HC4L1-C
Series
L251 : White power LED for general lighting.
Special specifications
H : General Color Rendering Index Typ. 90 Type.
Watt Class
C4 : 4 watt package.
Lighting color
L1 : Energy Star Correlated Color Temperature 3000(K)
Approved
Checked
Drawn
Symbol
Name
CITILED
CL-L251-HC4L1-C
-
2010/3/1
Mark Date
Issue of first edition
Description Appro.
Drawing No
CITIZEN ELECTRONICS CO.,LTD.
Ref.CE-P608 03/10
SPECIFICATIONS
3. Outline drawing
2/9
Cathode
Resin
Cathode
×8
×8
×8
Anode
09716300001
4. Performance
( 1 ) Absolute Maximum Rating
Parameter
Power Dissipation
Forward Current
Forward Pulse Current
Reverse Current
Operating Temperature
Storage Temperature
Symbol
P
D
I
F
I
FP
I
R
T
OP
T
ST
Rating Value
5.9
560
800
1
-30 ~ +85
-40 ~ +100
Unit
W
mA
mA
mA
C
C
*1
-
2010/3/1
Mark Date
H4L1C
Protection
device
Anode
It has a protection device built in as a
protection circuit against static electricity.
120
Tj
Max
Junction Temperature
C
*2
*1 Forward Current : Duty<=1/10 , Pulse Width<=10msec
*2 D.C. Current : Tj = Tc + Rj-c × P
D
Pulse Current : Tj = Tc + Rj-c × Pw(Power Dissipation / one-Pulse) × duty
Approved
Checked
Drawn
Symbol
Name
CITILED
CL-L251-HC4L1-C
Issue of first edition
Description Appro.
Drawing No
CITIZEN ELECTRONICS CO.,LTD.
Ref.CE-P608 03/10
SPECIFICATIONS
( 2 ) Electro-optical Characteristics
Parameter
Forward Voltage
Luminous Flux
General Color
Rendering Index
3/9
( Tc=25 C )
Symbol
Condition
V
F
Φv
Ra
Rj-c
I
F
=480mA
I
F
=480mA
I
F
=480mA
Junction-case
Min.
8.75
217
90
-
Typ.
9.30
255
-
6.0
Max.
10.5
-
-
-
Unit
V
lm
-
C/W
Thermal Resistance
Chromaticity coordinates ( Condition : I
F
=480mA ,Tc=25 C )
Color rank
x
y
Center 0.4338 0.4030
a
0.4562 0.4260
L1
b
0.4299 0.4165
c
0.4147 0.3814
d
0.4373 0.3893
*Color region stay with in MacAdam "3-step" ellipse from center.
0.44
0.43
0.42
0.41
y
0.40
0.39
0.38
0.37
0.41
0.42
0.43
0.44
x
0.45
0.46
Note: The tolerance of measurement at our tester is V
F
±3% , Φv±10% , Chromaticity(x,y)±0.005.
Approved
Checked
Drawn
Symbol
Name
CITILED
CL-L251-HC4L1-C
-
2010/3/1
Mark Date
Issue of first edition
Description Appro.
Drawing No
CITIZEN ELECTRONICS CO.,LTD.
Ref.CE-P608 03/10
SPECIFICATIONS
4/9
5. Characteristics
Forward Current vs. Forward Voltage
10.5
10.0
9.5
V
F
[V]
9.0
8.5
8.0
7.5
0
100
200
300
I
F
[mA]
400
500
Forward Current vs. Relative Luminous Flux
Tc=25C
Relative Luminous Flux [a.u.]
140%
120%
100%
80%
60%
40%
20%
0%
0
100
200
300
400
500
I
F
[mA]
Tc=25C
Forward Current vs. Chromaticity Coordinate
0.020
0.015
0.010
0.005
Δx, Δy
0.000
-0.005
-0.010
-0.015
-0.020
0
100
200 300
I
F
[mA]
400
500
Case Temperature vs. Chromaticity Coordinate
0.020
0.015
0.010
0.005
Δx, Δy
0.000
-0.005
-0.010
-0.015
-0.020
0
20
40
60
Tc [C]
80
100
Tc=25C
Δx
Δy
I
F
=480mA
Δx
Δy
Approved
Checked
Drawn
Symbol
Name
CITILED
CL-L251-HC4L1-C
-
2010/3/1
Mark Date
Issue of first edition
Description Appro.
Drawing No
CITIZEN ELECTRONICS CO.,LTD.
Ref.CE-P608 03/10
SPECIFICATIONS
5/9
Case Temperature vs. Forward Voltage
10.5
10.0
9.5
Ｖ
Ｆ
[V]
9.0
8.5
8.0
7.5
0
20
40
60
80
100
Tc [C]
Case Temperature vs. Relative Luminous Flux
I
F
=480mA
Relative Luminous Flux [a.u.]
120%
100%
80%
60%
40%
20%
0%
0
20
40
60
80
100
Tc [C]
I
F
=480mA
Case Temperature vs. Allowable Forward Current
600
500
400
I
F
[mA]
300
200
100
0
0
25
50
75
100
125
Tc [C]
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Spectrum
I
F
=480mA
Relative Emission Intensity [a.u.]
350
450
550
650
750
850
λ [nm]
Approved
Checked
Drawn
Symbol
Name
CITILED
CL-L251-HC4L1-C
-
2010/3/1
Mark Date
Issue of first edition
Description Appro.
Drawing No
CITIZEN ELECTRONICS CO.,LTD.
Ref.CE-P608 03/10
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