MIL-PRF-19500/102B
Temperature-Power Derating Curve
Tc=25°C 2N1016, Tj=150C max.
160
140
120
100
80
60
40
20
0
25
50
75
100
125
150
175
Tc (ºC) (Case)
DC Operation
Thermal Resistance Junction to Case = 0.700ºC/W
Note: Max Finish-Alloy Temp = 175.0ºC
NOTES:
1. Top curve is thermal runaway loci and cannot be used as a derate design curve since it exceeds the maximum
ratings for this part. Operating under this curve using these mounting conditions assures the device will not
have a thermal runaway. This is the true inverse of the worst case thermal resistance value extrapolated out
to the thermal runaway point.
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 power rating where most users want to limit
TJ in their application.
FIGURE 2. Derating for all devices.
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