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