The MAP-type overmolding process of PCB substrates consists
of several production steps: A substrate (labeled ‘‘1” in Fig. 2)
and an epoxy pellet (inlet for pellet labeled ‘‘2”) are inserted into
the mold tool (step A in Fig. 3). Both must be pre-heated, to afterwards
at the mold temperature for several hours. Our mold tool
was equipped with a PZT pressure sensor from Kistler (labeled
‘‘4”). Small marks of the sensor can be seen on the overmolded substrate
(labeled ‘‘5”).