Authors: M. Siva Kumar, Satish Kumar Das
Abstract: Thermal effects have emerged as a fundamental constraint in high-density circuit design. As feature sizes shrink and power density increases, heat generation within integrated circuits (ICs) and printed circuit boards (PCBs) threatens both performance and reliability. This paper presents an in-depth exploration of thermal challenges, modeling techniques, mitigation strategies, and empirical assessments in modern circuit designs. Key contributions include analyzing self-heating, hotspots, thermal resistance behaviors, and advanced thermal management methodologies such as micro-channel cooling and integrated heat sinks. Standard numerical methods, coupled electro-thermal simulations, and empirical results from literature form the basis of analysis. This work concludes with recommended practices for designers and future research directions.
Keywords: Thermal effects, high-density circuits, heat management, PCB design, micro-channels, thermal modeling, reliability.
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