Current Derating Curve
Figure 5.
Maximum Forward Current vs. Ambient
Temperature. Derating based on
T
JMAX
= 135
o
C.
I
F
- Forward Current (mA)
800
700
600
500
400
300
200
100
0
0
25
50
75
100
125
150
T
A
- Am bient Tem perature (
ο
C)
R
θ
J-A
=20
o
C/W
5
R
θ
J-A
=1
o
C/W
Note:
Additional heatsinking is required, even for
extremely brief periods. Please consult
AB05, Luxeon Thermal Design Guide, for
additional information.
Representative Typical Spatial Radiation Pattern
Lambertian Radiation Pattern
100
90
80
70
60
50
40
30
20
10
0
-100 -80 -60
Figure 6.
Representative Typical Spatial Radiation
Pattern for Luxeon V Star.
Typical Upper Bound
Typical Lower Bound
-40
-20
0
20
40
60
80
100
Angular Displacement (Degrees)
Side Emitting Radiation Pattern
100
90
80
70
60
50
40
30
20
10
0
-120 -100 -80
-60
-40
-20
0
20
40
60
80
100
120
Relative Intensity (%)
Figure 7.
Representative Typical Spatial Radiation
Pattern for Luxeon V Star.
Angular Displacement (Degrees)
Luxeon V Star
6
Document #: DS30 (09/20/04)
LUMILEDS [ LUMILEDS LIGHTING COMPANY ]
