Current Derating Curves
400
350
300
250
200
150
100
50
0
0
I
F
- Forward Current (mA)
R
θ
J-A
=60
o
C/W
R
θ
J-A
=50
o
C/W
R
θ
J-A
=40
o
C/W
R
θ
J-A
=30
o
C/W
25
50
75
100 125 150
T
A
-Ambient Temperature (
o
C)
Figure 5a. Maximum Forward Current vs. Ambient Temperature.
Derating based on T
JMAX
= 135ºC for White, Green, Cyan, Blue, and Royal Blue.
400
350
300
250
200
150
100
50
0
0
I
F
- Forward Current (mA)
Rθ
J-A
=60°C/W
Rθ
J-A
=50°C/W
Rθ
J-A
=40°C/W
Rθ
J-A
=30°C/W
25
50
75
100
125
T
A
- Ambient Temperature (
o
C)
Figure 5b. Maximum Forward Current vs. Ambient Temperature.
Derating based on T
JMAX
= 120ºC for Red, Red Orange and Amber.
I
F
- Forward Current (mA)
400
350
300
250
200
150
100
50
0
0
R
θ
J-A
=60
o
C/W
R
θ
J-A
=50
o
C/W
R
θ
J-A
=40
o
C/W
R
θ
J-A
=30
o
C/W
20
40
60
80
100 120 140
T
A
- Ambient Temperature (
o
C)
Figure 5c. Maximum Forward Current vs. Ambient Temperature.
Derating based on T
JMAX
= 120ºC for Warm White.
LUXEON Emitter DS25 (5/07)
12
LUMILEDS [ LUMILEDS LIGHTING COMPANY ]
