Strain measurement of power module package resin.
Measuring the strain behavior of the sealing resin under thermal cycling using a strain gauge!
We would like to present the results of strain measurements conducted by attaching strain gauges and thermometers to the surfaces of power modules, both in a mounted state on a circuit board and in an unmounted state. In the mounted module, it was observed that the temperature change was slightly slower, and correspondingly, the change in strain was also slow. This is believed to be due to the delayed transfer of heat to the module when it is mounted. 【Test Overview】 ■ Strain Gauge Used - Foil strain gauge for composite materials: compatible linear expansion coefficient 1x10^-6, base 15x5mm ■ Test Conditions - Hold at -40℃ for 3 hours → 15℃/min → Hold at 80℃ for 3 hours * 5 cycles * For more details, please download the PDF or feel free to contact us.
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