In order to use a derating curve of a large power transistor
A) you must know the case temperature for the worst case.
B) you must use an npn transistor.
C) you must have a schematic diagram of the transistor.
D) you must reduce the ambient temperature.

Question

Quizplus · Accepted Answer

The derating curve of a large power transistor provides the safe operating area (SOA) of the device at different temperatures. To use the derating curve, you must know the case temperature for the worst-case scenario in order to ensure that the device operates within its SOA. The other options (B, C, and D) are not directly related to the use of the derating curve.

In Order to Use a Derating Curve of a Large