Multiple silicon chips are combined to a functional unit on a circuit carrier (for example PCB board, DCB substrate, thick film ceramic) which is mostly encased in a hybrid housing for environmental protection. The metallic conductors attached inside the housing then serve as the connection to the outside. If a higher current carrying capacity is required, such as in power electronics, the Al thick wire connection is used (<xr id="fig:Bond_connection_Al_thick_wire_on_clad_AlSi"/><!--(Fig. 9.1)-->).

<figure id="fig:Bond_connection_Al_thick_wire_on_clad_AlSi">

</figure>