Question
Download Solution PDFWhen the junction temperature of a transistor increases, its ______ increases.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFWhen the junction temperature of a transistor increases, it increases the collector current causing a further increase in temperature and this process is called Thermal runway.
So, option (2) is correct.
Notes:
Thermal resistance between collector-base junction develops due to thermal run-way.
Where,
θ = Thermal resistance
Tj = collector Junction Temperature
TA = Ambient temperature
PD = Power dissipation along collector junction.
Thermal resistance increases due to increase in Junction temperature.
Thermal run-away can be avoided if:
Where,
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