MIL-PRF-19500/348F
TemperatturePoower Dratining ururve
Tempera ure- -P wer De erat g C C ve
TA = 25°C252N33467, ,LL2N33N3,468, L
TA= °C 2N4 6 7 , , 2 468 L
1.2
1
0.8
0.6
0.4
0.2
0
25
50
75
100
125
150
175
200
225
DC Operation
Ta (ºC) (Ambient)
Thermal Resistance Junction to Ambient = 175ºC/W
Note: Max Finish-Alloy Temp = 175.0ºC
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 power for the desired
maximum TJ allowed.
2. Derate design curve constrained by the maximum junction temperature (TJ ≤ 200°C) and power rating specified.
(See 1.3 herein.)
3. Derate design curve chosen at TJ ≤ 150°C, where the maximum temperature of electrical test is performed.
4. Derate design curves chosen at TJ ≤, 125°C, and 110°C to show power rating where most users want to limit TJ
in their application.
* FIGURE 2. Temperature-power derating R
.
ΘJA
13
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