Aluminum PCBs contain a thin layer of thermally conductive dielectric material that transfers heat. System Technik Group has been producing Aluminum Printed Circuit Boards (also called Metal base PCBs) for over 10 years. Although originally envisioned for use in the power-supply industry these substrates are now most widely used in High Brightness LED products. There are many names for these products; Aluminum clad, aluminum base, Metal clad (MCPCB), Insulated Metal Substrate (IMS or IMPCB), thermally conductive PCBs, etc… but they all mean the same thing. A thin layer of thermally conductive but electrically insulating dielectric is laminated between a metal base and a copper foil. The copper foil is etched into the desired circuit pattern and the metal base draws heat away from this circuit through the thin dielectric.
Power Converters and LEDs are the largest users of these products, Automotive and RF companies are also looking to take advantage of the benefits of these constructions.
Products with Aluminum PCBs