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 post The Applicability of JESD51-14 for the Determination of Junction to Case Thermal Resistance appeared first on Electronics Cooling ..read more

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 […] The post Tech Brief: Effect of Thermocouple Size appeared first on Electronics Cooling ..read more

By: Marta Rencz, Andras Poppe, and Genevieve Martin The 29th issue of the THERMINIC (Thermal investigations of ICs and Systems) workshops was held on 27-29 September 2023 in Budapest, Hungary at the Budapest Marriott Hotel. Over 110 participants enjoyed the […] The post Report About the THERMINIC 2023 Workshop appeared first on Electronics Cooling ..read more

The IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) was held at the JW Marriott Grande Lakes, Orlando, FL, May 30 – June 2, 2023. This was the 22nd ITherm, which was first held in 1988. […] The post Summary of the IEEE ITherm 2023 Conference appeared first on Electronics Cooling ..read more

INTRODUCTION Long time readers may recall that one answer to the question of how humidity changes the thermal conductivity of air is “Nothing to worry about” [1]. Generally, the effect of humidity on air properties is small enough that it […] The post Calculation Corner: Properties of Humid Air appeared first on Electronics Cooling ..read more

This article describes a semi-empirical equation that can be used to assess radiation heat transfer in terms of an effective convection coefficient. The effective convection coefficient due to radiation is shown to be: Where temperatures are in °C and ε […] The post Calculation Corner: A Simple Method for Estimating Radiation Heat Transfer appeared first on Electronics Cooling ..read more

ABSTRACT A smartwatch is one of the most popular wearable devices now. Along with battery life and security, thermal safety is the most common concern. We show how to meet ergonomic standards for users and predict thermal performance in typical […] The post Thermal Management and Safety Regulation of Smart Watches appeared first on Electronics Cooling ..read more

As most readers are aware, the data center industry has put an increased focus on energy efficiency and environmental impact. Data centers in the United States are estimated to consume nearly 2% of the total electricity. The de facto metric […] The post On-site Cogeneration for Reducing Data Center Primary Energy Use appeared first on Electronics Cooling ..read more

Continuing from part 1, and the advantages of thermocouples, we will now visit the process to make a thermocouple and its measurement system. The way thermocouples are made is very simple. We have a thermocouple welder, shown in Figure 1, […] The post Thermocouples Basics Part 2: How They Are Made and Its Measurement System appeared first on Electronics Cooling ..read more

Multichannel isolated thermocouples is a system that RECOM developed for use in a test lab. We will discuss how this will be useful for others to know the advantages and disadvantages of such a system. What is a thermocouple? It […] The post Thermocouple Basics Part 1: Advantages to Multi-Channel Isolated Thermocouples appeared first on Electronics Cooling ..read more