DATA SHEET
1/11
1. Scope of Application
This data sheet is applied to the chip type LED lamp, model CL-L251-C4N1-C.
2. Part code
CL-L251-C4N1-C
Series
L251 : White power LED for general lighting.
Watt class
C4 : 4 watt package.
Lighting color
N1 : Compliance with ANSI C78.377-2008,
Correlated Color Temperature 5000K
Symbol
Name
CITIZEN ELECTRONICS CO.,LTD. JAPAN
CL-L251-C4N1-C
CITILED
Ref.CE-P1170 05/11 R1(0711)
DATA SHEET
3. Outline drawing
Cathode
(Tc Measurement Point)
Cathode Mark
Resin
2/11
Cathode
Marking 1
×8
×8
×8
Anode
Marking 2
Protection device
Anode
It has a protection device built in as a
protection circuit against static electricity.
Unit : mm
Tolerances unless otherwise specified : ±0.3
Marking 1 :
Marking 2 :
Serial No.
4N1C
Color
Watt
N1
4 : 4W
4. Performance
( 1 ) Absolute Maximum Rating
Parameter
Symbol
Power Dissipation
Forward Current
Reverse Current
P
D
I
F
Rating Value
11.1
960
1
Unit
mA
mA
mA
C
C
C
W
Forward Pulse Current
Operating Temperature
Junction Temperature
Storage Temperature
I
FP
T
OP
Tj
Max
T
ST
I
R
1,000
-30
½
+85
150
*1
-40
½
+100
*1 Forward Current : Duty<=1/10 , Pulse Width<=10msec
*2 D.C. Current : Tj = Tc + Rj-c × P
D
*2
Pulse Current : Tj = Tc + Rj-c × Pw(Power Dissipation / One-Pulse) × Duty
Symbol
Name
CITIZEN ELECTRONICS CO.,LTD. JAPAN
CL-L251-C4N1-C
CITILED
Ref.CE-P1170 05/11 R1(0711)
DATA SHEET
( 2 ) Electro-optical Characteristics
Parameter
Symbol
Condition
Forward Voltage
Luminous Flux
General Color
Rendering Index
3/11
( Tc=25 C )
Unit
lm
C/W
-
V
Φv
Rj-c
Ra
V
F
I
F
=480mA
I
F
=480mA
I
F
=480mA
Junction-case
Min.
8.75
387
-
-
Typ.
455
6.0
67
9.3
Max.
10.5
-
-
Thermal Resistance
-
Chromaticity coordinates ( Condition : I
F
=480mA, Tc=25 C )
Color rank
N1
a
b
c
d
Center
x
0.3447
0.3551
0.3376
0.3366
0.3515
y
0.3553
0.3760
0.3616
0.3369
0.3487
(5028K)
0.38
x-y chart-CIE1931
5400K
5000K
4600K
0.3551
0.376
0.37
0.36
y
Color region
B.B. Locus
0.35
0.34
5200K
4800K
0.33
0.32
0.33
0.34
x
0.35
0.36
0.37
Note: The tolerance of measurement at our tester is V
F
+/-3%, Φv+/-10%, Chromaticity(x,y)+/-0.005
and Ra+/-1.
Symbol
Name
CITIZEN ELECTRONICS CO.,LTD. JAPAN
CL-L251-C4N1-C
CITILED
Ref.CE-P1170 05/11 R1(0711)
DATA SHEET
4/11
5. Characteristics
・Forward
Current vs. Forward Voltage
10.5
10.0
9.5
VF [V]
9.0
8.5
8.0
7.5
0
200
400
600
I
F
[mA]
800
1000
Tc=25C
・Forward
Current vs. Relative Luminous Flux
Tc=25C
200%
Relative Luminous Flux [a.u.]
180%
160%
140%
120%
100%
80%
60%
40%
20%
0%
0
200
400
I
F
[mA]
600
800
1000
・Forward
Current vs. Chromaticity Coordinate
0.020
0.015
0.010
0.005
Tc=25C
・Case
Temperature vs. Chromaticity Coordinate
I
F
=480mA
0.020
0.015
0.010
0.005
∆x
∆y
∆x, ∆y
∆x
∆½
∆x, ∆y
0.000
0.000
-0.005
-0.010
-0.015
-0.020
0
200
400
600
800
-0.005
-0.010
-0.015
-0.020
I
F
[mA]
1000
0
25
50
75
100
Tc [C]
125
150
Symbol
Name
CITIZEN ELECTRONICS CO.,LTD. JAPAN
CL-L251-C4N1-C
CITILED
Ref.CE-P1170 05/11 R1(0711)
DATA SHEET
5/11
・Case
Temperature vs. Forward Voltage
10.0
9.5
Ｖ
Ｆ
[V]
9.0
8.5
8.0
・Case
Temperature vs. Relative Luminous Flux
I
F
=480mA
I
F
=480mA
120%
Relative Luminous Flux [a.u.]
100%
80%
60%
40%
20%
0%
0
25
50
75
100
Tc [C]
125
150
0
25
50
75
100
Tc [C]
125
150
・Case
Temperature vs. Allowable Forward Current
1200
1000
800
I
F
[mA]
600
400
200
0
Relative Emission Intensity [a.u.]
120%
100%
80%
60%
40%
20%
0%
・Spectrum
Tc=25C, I
F
=480mA
0
25
50
Tc [C]
75
100
125
150
350
450
550
650
λ [nm]
750
850
Symbol
Name
CITIZEN ELECTRONICS CO.,LTD. JAPAN
CL-L251-C4N1-C
CITILED
Ref.CE-P1170 05/11 R1(0711)
京公网安备 11010802033920号
EEWORLD
