By Navid Kazem, Lieven Vervecken, and Claire Wemp The SEMI-THERM 41 Symposium was held March 10-13, 2025 at the Double Tree Hotel in San Jose, CA. Program organization was led by General Chair Lieven Vervecken (Diabatix), Program Chair Dr. Navid Kazem (Arieca), and Program Vice Chair Dr. Claire Wemp (DuPont). It featured a variety of activities including technical short … [Read more...]
Measuring the Thermal Conductivity of Anisotropic Heat Spreading Materials
By: Aaditya A. Candadai, Aalok Gaitonde, Shanmukhi Sripada, Justin A. Weibel, Amy M. Marconnet Introduction New high thermal conductivity materials have been developed to enable enhanced heat transport within electronics packages and other thermal management applications. Many of these engineered materials have anisotropic thermal properties inherent to their fabrication, … [Read more...]
Theta-JC Measurements: Steady-State Compared to Transient Methods
Thermal characterization plays a vital role in electronic package reliability testing, design, and verification of manufacturing processes. The reliability of electronic packages is controlled, in part, by ensuring the maximum junction temperature is not exceeded during operation. Systems such as cell phones, electric vehicles and computers, must operate with die temperatures … [Read more...]
The Applicability of JESD51-14 for the Determination of Junction to Case Thermal Resistance
Rjc (or sometimes ThetaJC, θjc, Rth_jc), the so-called ‘junction to case’ thermal resistance, is a thermal metric that enables comparison of the thermal performance of packaged semiconductor devices from differing suppliers. The JEDEC standard JESD51-14 [1] documents a method for the experimental determination of Rjc. Although applicable for packages that exhibit a … [Read more...]
Tech Brief: Effect of Thermocouple Size
Thermocouples are widely used for temperature measurements. They are particularly useful in lab testing, due to their relatively low cost and the ability to easily fabricate thermocouples of specific lengths for a given test. This Tech Brief discusses issues related to the size of a thermocouple that may be considered when using them. A thermocouple consists of two wires made … [Read more...]
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