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A bipolar transistor has a maximum junction temperature rating of 200°C. If its junction-to-case thermal resistance of 1°C per watt, the transistor can dissipate at the most a power of 100 watts if the case temperature is not to exceed
  • a)
    100°C
  • b)
    50°C
  • c)
    200°C
  • d)
    None of these
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A bipolar transistor has a maximum junction temperature rating of 200&...
Let the case and junction temperature be T1 and T2. The thermal resistance θ= 1C/W. Then power dissipated PD is given by,

Thus, the case temperature should be, T1 = 100C
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A bipolar transistor has a maximum junction temperature rating of 200°C. If its junction-to-case thermal resistance of 1°C per watt, the transistor can dissipate at the most a power of 100 watts if the case temperature is not to exceeda)100°Cb)50°Cc)200°Cd)None of theseCorrect answer is option 'A'. Can you explain this answer?
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