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← TechnologyWhich outcome occurs when a bipolar junction transistor (BJT) experiences temperature-induced avalanche breakdown?
A)Uncontrolled rise in collector current✓
B)Increased base-emitter junction capacitance
C)Reduced transistor input impedance
D)Decreased transistor switching speed
💡 Explanation
A thermal runaway begins because increased temperature raises intrinsic carrier concentration, leading to greater leakage current across the collector-base junction; resulting in increased current flow therefore causes more heating, rather than stabilized operation or mere performance degradation.
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