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DATA SHEET
Ts=25C
Unit
V
(2) Electro-optical Characteristics
Parameter
Forward Voltage
Symbol
VF
Condition
IF=350mA
Min.
2.8
86
80
-
Typ.
3.1
115
-
Max
3.4
Luminous Flux
IF=350mA
IF=350mA
Junction-Case
lm
-
-
-
φv
Ra
-
CRI
Thermal Resistance
Rj-c
9
C/W
Chromaticity coordinates ( Condition : IF=350mA, Ts = 25C)
Color rank
Center
Reference (ANSI C78.377)
x
y
x
y
0.3818
0.3797
Center
0.3818
0.4006
0.3736
0.3670
0.3898
0.3797
0.4044
0.3874
0.3578
0.3716
a
b
c
Oval parameter
W1
4000K
a
b
0.00939
0.00402
54.00
θ
d
*Color region stay within MacAdam "3-step" ellipse from the chromaticity center.
*The chromaticity center refers to ANSI C78.377:2008.
*θis 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
0.41
0.40
Color Region
(ANSI)
0.39
0.38
Color Region
0.37
0.36
0.35
0.36 0.37 0.38 0.39 0.40 0.41
x
Note: The tolerance of measurement at our tester is VF+/-3% , Φv+/-10% , Chromaticity(x,y)+/-0.005 and Ra+/-1.
Symbol
Name
CITILED
CL-L400-MC1W1-A
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Ref.CE-P1578 10/11