3/11
DATA SHEET
Tc=25C
Unit
V
lm
-
(2) Electro-optical Characteristics
Parameter
Forward Voltage
Symbol
VF
Condition
IF=240mA
Min.
33.6
595
90
Typ.
36.2
700
-
Max.
39.9
-
-
-
Luminous Flux
Φv
Ra
Rj-c
IF=240mA
IF=240mA
CRI
Thermal Resistance
Junction-Case
-
2.1
C/W
Chromaticity coordinates ( Condition : IF=240mA, Tc = 25C）
Center
Reference (ANSI C78.377)
x
x
y
y
0.4578
0.4101
Center 0.4578 0.4101
Oval parameter
a
b
c
0.4813 0.4319
0.4562 0.4260
0.4373 0.3893
0.4593 0.3944
2700K
a
b
0.00774
0.00411
57.28
θ°
d
*Color region stay within MacAdam "3-step" ellipse from the chromaticity center.
*The chromaticity center refers to ANSI C78.377:2008.
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)
x-y chart-CIE1931
0.44
2900K
2700K
0.43
0.42
0.41
0.40
0.39
0.38
2500K
Color region
Color region
(ANSI)
B.B. Locus
2600K
2800K
0.44
0.43
0.45
0.46
x
0.47
0.48
0.49
Note: The tolerance of measurement at our tester is VF+/-3% , Φv+/-10% , Chromaticity(x,y)+/-0.005 and Ra+/-1.
Symbol
Name
CITILED
CLL020-1204A5-273H1A7
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Ref.CE-P2071 05/12
CITIZEN [ CITIZEN ELECTRONICS CO., LTD. ]
