Previous Technical Data columns have covered thermal properties for many of the materials that are common to electronics packaging. The Technical Data for this issue is broader in scope and addresses common building materials, some of which are used in heat transfer laboratory environments, in addition to their usual construction applications. Knowledge of thermal conductivity … [Read more...]
Providing More Value Than Playing Video Games
ElectronicsCooling magazine was founded more than 12 years ago with a mission of providing current and practical thermal management information with archival value. I hope you agree this magazine is still delivering on its original promise. The last word in the mission statement is value, and each of us, as a thermal engineer, desires to add value to our projects. Admittedly, … [Read more...]
Moisture permeation in electronics
Environmental control for electronic packages and enclosures often involves understanding and managing moisture concentration. Excessive moisture combined with processing temperatures can cause damage. High humidity levels have other potentially harmful effects such as corrosion. Since the movement of heat and moisture are similar (i.e., diffusive), thermal engineers may be … [Read more...]
Thermal conductivity of common alloys in electronics packaging
Thermal conductivity of common alloys in electronics packaging Jim Wilson, Associate Technical Editor Property Thermal Conductivity (W/mK) @25°C CTE (ppm/°C) @25°C Copper 395 17.1 Aluminum 200 23.5 CuMo 160-185 7.0-9.0 CuW 180-220 6.5-8.5 Kovar 17 5.9 Alloy42 12-15 4-6 Invar + … [Read more...]
Thermal Conductivity of III-V Semiconductors
Silicon dominates the electronics industry as the semiconductor of choice for most applications, but some electrical functions require electronic properties different from those of silicon. A grouping of semiconductors termed "III-V" have desirable electrical properties for applications such as microwave integrated circuits, light emitting diodes and laser diodes. Some of the … [Read more...]
