Steady-state and transient thermal properties of resistors embedded in printed circuit boards (original) (raw)

This work presents experimental results of static and transient thermal characterisation of thin-film resistors embedded in printed circuit boards and commercial discrete resistors. Objects of study were differ in sheet resistance, size or topology. Temperature on the test sample surface was determined based on thermographic measurement. Based on experimental results maximal surface temperature was found. Moreover thermal time constant was evaluated which can be helpful to determine how quickly temperature is getting at equilibrium state. Conclusions of this work can be helpful to define thermal behaviour and maximum power dissipation of the resistors embedded in printed circuit boards.