Junction temperature most often refers to the highest operating temperature of a semiconductor within an electronic device. During operation of the device, the junction temperature is higher than the package temperature which is higher than the ambient temperature outside the device. The difference in temperature is due to the thermal resistance of the package surrounding the semiconductor. Different package types offer differing thermal resistance. Semiconductors that dissipate lots of heat need packages with improved thermal properties to keep the device’s junction temperature below safe operating limits.

Triad’s design team includes semiconductor, package and reliability experts that will work with you to specify a semiconductor and package solution optimized for the thermal requirements of your project.