Current Derating Curve
Note:
Additional heatsinking is required, even for
extremely brief periods. Please consult
AB05, Luxeon Thermal Design Guide, for
additional information.
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
R
θ
J-A
=1
o
C/W
0
Figure 5.
Maximum Forward Current vs.
Ambient Temperature. Derating based
on T
JMAX
= 135
o
C.
Representative Typical Spatial Radiation Pattern
Lambertian Radiation Pattern
100
90
80
70
60
50
40
30
20
10
0
-100 -80 -60
Typical Upper Bound
Typical Lower Bound
Figure 6.
Representative Typical Spatial Radiation
Pattern for Luxeon V Emitter.
60
80
100
-40
-20
0
20
40
Angular Displacement (Degrees)
Side Emitting Radiation Pattern
100
90
Relative Intensity (%)
80
70
60
50
40
30
20
10
0
-120 -100 -80
-60
-40
-20
0
20
40
60
80
100 120
Figure 7.
Representative Typical Spatial Radiation
Pattern for Luxeon V Emitter.
Angular Displacement (Degrees)
Luxeon V Emitter
7
Document #: DS34 (09/19/04)
LUMILEDS [ LUMILEDS LIGHTING COMPANY ]
