Layered photosensitive boards, copper on aluminium Pre-sensitised printed circuit boards for making power supply cards, SMT power transistor-based circuits, hybrid power circuits etc.
These boards are also used as Insulated Metal Substrate (IMS) in optoelectronics for the design of power LED circuits such as OSRAM's Golden Dragon and Luxeon Star.
Significant dissipation enables denser component layout.
Insulation fulfils three functions:
- adhesive between the copper and the aluminium
- dielectric insulation between the copper and the aluminium
- thermal relay between the active face of the circuit and the aluminium heat dissipating sole