Today it is commonly accepted that dynamic thermal measurements, which have been used for more than 20 years [1], [2], [3], [4], are superior to steady-state ones. The temperature vs. time function - often called the thermal step-response function, heating curve, or thermal impedance curve - is characteristic of the chip-to-ambient structure, including even different cooling … [Read more...]
Flash Diffusivity Method: A Survey of Capabilities
The development, specification, and quality control of materials used in electronics packaging and thermal management often require the measurement of thermophysical properties.This data can be critical to a successful design, especially with the rapidly increasing cooling requirements that result from the packaging of higher performance devices. A variety of methods, involving … [Read more...]
Dynamic Measurements: A Cornerstone of the European PROFIT Project
This article presents an overview of a number of dynamic measurement methods as part of the European PROFIT project. Due to lack of space, details cannot be given, but the interested reader is invited to consult the references at the end of the article. Because the majority of a product's cost and performance are committed in the early phases of a design cycle, it is envisioned … [Read more...]
Thermal I/O
Don't do a spit-take with your coffee - there is no double-sided BGA. It would never see the light of day, simply because no one would ever buy it. Sure the density is unbeatable, but there is no practical method of soldering all the leads on such a package to a printed circuit board. No electrical hardware design engineer would accept such a ridiculous package. Then why do … [Read more...]
The Many Flavors of Ball Grid Array Packages
By now, it is a tired truism to say that the consumer electronics industry has consistently delivered on its promise to provide products that are smaller, faster, and more feature-rich at an ever cheaper price. The main driver for these trends has been the increasing integration of more functions on a single chip. In spite of its greater performance, the PC of today has far … [Read more...]
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