Cooldown of a PCB
- 06 / 04 / 2023
PCBAs have to withstand temperature changes and the resistance of a PCBA to extreme temperature changes is tested in thermal cycling tests, e.g., according to IEC 60068-2-14. We now can reproduce these tests in a conjugate heat-transfer analysis process. The transient temperature field can be directly used in a thermo-mechanical analysis of the PCBA in which the warpage of the PCB and the inelastic solder-joint strains are evaluated.
The animation shows a 125°C hot PCBA put into a -40°C cold chamber and the color represents the temperature of the fluid.
Video: Thermal cycling of a PCBA: Putting a 125°C hot PCBA in a -40°C cold chamber.
