MIL-PRF-19500/608D
TemEMPERtuUeECuRRENTtDDRATINGng RVurve
T pera ATrR- -CU rren E erati CU CE
TC = 25°C 1N6660CCT1, ENTIRE PACKAGE
TC=25°C 1N6660CCT1, Entire Package
35
30
25
20
15
10
5
0
25
50
75
100
125
150
175
Squarewave Operation 50% Duty Cycle
Tc (ºC) (Case)
Thermal Resistance Junction to Case = 0.850ºC/W
NOTES:
1. This is the true inverse of the worst case thermal resistance value. All devices are capable of operating at ≤ TJ
specified on this curve. Any parallel line to this curve will intersect the appropriate current for the desired
maximum TJ allowed.
2. Derate design curve constrained by the maximum junction temperature (TJ ≤ 150°C) and power rating specified.
(See 1.3 herein.)
3. Derate design curves chosen at TJ ≤ 125°C, and 110°C to show current rating where most users want to limit
TJ in their application.
FIGURE 2. Temperature-current derating graph.
10
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