Ohmite Manufacturing, a provider of thermal solutions and resistors for high current, high voltage and high energy applications, has announced two new heat sinks: the C series modular heat sink for use in high power environments and the CP series of cold plate four-pass heat sinks for use with the company’s 1,000 and 2,000 watt TAP series of resistors. The new heat sinks will … [Read more...]
Benefits and Drawbacks of Using Two-Phase Cooling Technologies in Military Platforms
Authors Johannes van Es and Henk Jan van Gerner, National Aerospace Laboratory NLR, The Netherlands The next generation military platforms will be equipped with more and more powerful sensors and avionics. The increasing power densities in electronic subsystems demand more cooling power while survivability requirements limit the possibilities for extending or adding … [Read more...]
Thermal Facts & Fairy Tales: Are Critical Heat Fluxes of LEDs and ICs Comparable?
Author Clemens J.M. Lasance, Guest Editor Fact: many papers discussing LED thermal management issues report values of about 100 W/cm2 and use the same arguments that are valid for ICs to demonstrate that some critical value has been reached. The question to be addressed: is this indeed a fact, or can it be shown to be a fairy tale, and hence do we need different … [Read more...]
Understanding the Thermoreflectance Coefficient for High Resolution Thermal Imaging of Microelectronic Devices
Authors Kazuaki Yazawa, Microsanj/Purdue University Dustin Kendig, Microsanj Peter E. Raad, TMX Scientific/SMU Pavel L. Komarov, SMU Ali Shakouri, Purdue University Introduction Thermoreflectance thermal imaging is an optical technique for measuring, with external illumination, the relative change in the surface reflectivity as a function of temperature for a … [Read more...]
Calculation Corner – Application of Transient Thermal Methods to Moisture Diffusion Calculations, Part 2
Bruce Guenin, Assoc. Editor, Electronics Cooling View Part 1 here. Introduction This two-part column was motivated by concerns regarding the important role of organic materials in electronic systems and their accompanying vulnerabilities due to moisture diffusion. The methods described herein are intended to provide an efficient means of predicting the rate of moisture … [Read more...]
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