Which reliability risk increases during rapid temperature fluctuations in a BJT?

💡 Explanation

Thermal runaway risk increases dramatically because elevated temperatures at the emitter-base junction cause higher currents, which further increase local heating via the Joule effect; therefore, positive feedback accelerates failure rather than stabilizing the bias point.

• Which outcome occurs when the abrasive grains of a grinding wheel blunt excessively?
• Which outcome occurs when a hermetic refrigeration compressor operates with excessive superheat in the refrigerant vapor?
• Which outcome occurs when rapid over-correction by anti-islanding protection on a distributed generation circuit breaker precipitates a cascading event?
• Which outcome occurs when lubricating oil viscosity declines excessively within an axial piston pump's hydrostatic bearings?
• Which outcome occurs when bird-like flapping wing flight achieves resonance?
• Which consequence results when an undersized accumulator reacts to sudden load spikes in a hydraulic forging press?