Foil Circuits

Progress in integration of passive components is of essential importance for many applications along with the high integration rate of semiconductors. A further asset in view of the integration of passive components, like the field of peripheral circuits, is a new technology on the base of low-cost plastic materials, called Sicufol ® . With this new technology it is possible to integrate capacitors, coils and NiCr-resistors. Investigations shows that passive components with very good properties can be produced. A summary of climatic tests carried out on NiCr-resistors with Cu-contacts and capacitances are shown. HF-applications and some low frequency applications (e.g. a simple resistor network) show that conventional or hybrid components can be soldered on plastic foils using this technology.