What is the power cycle capability ΔTc?

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Power cycle capability is the capability of the module to withstand repeated heating and cooling. The case temperature Tc will goes up and down until the modules fails: Stress strain is generated between the metal base plate and the insulating substrate causing fatigue in the solder under the insulating substrate. Refer to technical documents describing the relation of ΔTc and the expectancy of life of the device.

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