Heat capacitive component carrier and method to produce said component carrier

The invention refers to a component carrier realized as a printed circuit board, an intermediate printed circuit board product or an IC-substrate, comprising at least one heat-passage component, said at least one heat-passage component being realized in form of a heat-generating or a heat-absorbing component that is mounted on an outside surface layer or is embedded within at least one inner layer of the component carrier, and further comprising at least one latent-heat storage unit with a phase-change material. The phase-change material is arranged within at least one cavity and integrated within a laminated build-up of the component carrier and is directly thermoconductively coupled with the at least one heat-passage component. The invention also refers to a method for producing said component carrier.